var bibbase_data = {"data":"<img src=\"//bibbase.org/img/ajax-loader.gif\" id=\"spinner\"\n  style=\"display: none;\" alt=\"Loading..\" />\n\n<div id=\"bibbase\">\n\n  <script type=\"text/javascript\">\n    var bibbase = {\n      params: {\"jsonp\":\"1\",\"host\":\"bibbase.org\"},\n      data: [{\"title\":\"Exergy assessment of vinasse disposal alternatives: Concentration, anaerobic digestion and fertirrigation\",\"type\":\"inproceedings\",\"year\":\"2018\",\"keywords\":\"Anaerobic digestion,Biogas,Evaporative concentration,Exergy,Vinasse\",\"id\":\"6a47505f-46a4-3b09-9c0e-ee71eb1e9cf5\",\"created\":\"2019-04-24T13:07:47.767Z\",\"file_attached\":false,\"profile_id\":\"0975795e-74f9-3538-96df-f91d2a331893\",\"last_modified\":\"2019-10-05T12:27:38.527Z\",\"read\":false,\"starred\":false,\"authored\":\"true\",\"confirmed\":\"true\",\"hidden\":false,\"citation_key\":\"Nakashima2018\",\"private_publication\":false,\"abstract\":\"Vinasse is the main liquid effluent of ethanol distillation and, since it can cause damages in water and soil resources, different solutions have been proposed to correctly dispose this wastewater. The use as fertilizer in sugarcane irrigation, called fertirrigation, is the main alternative practiced in Brazilian distilleries and it can be enhanced with vinasse concentration and/or biogas production by anaerobic digestion (AD). However, few studies have evaluated the performance of those systems and their combination in order to compare and improve the efficiency of vinasse treatment. Thus, an exergy analysis comparing five combinations of fertirrigation, vinasse concentration and anaerobic digestion, including power generation from biogas, was performed using a thermodynamic model and the Anaerobic Digestion Model Nº1 developed in Aspen Plus and Matlab. The highest exergy efficiency of 27.9% was attained for an average distillery with an AD power plant concentrating digested vinasse. This case performed better than others because all vinasse was treated and part of vinasse water exergy was recovered in the concentration process. Furthermore, the heat integration between AD power plant and vinasse concentration increased the exergy efficiency of those processes in 9-23% and reduced steam consumption in 12-25%. For all cases, fertirrigation was the main source of irreversibilities due to the organic substances exergy losses, while anaerobic digestion reduced the total exergy destroyed.\",\"bibtype\":\"inproceedings\",\"author\":\"Nakashima, R.N. and de Oliveira, S.\",\"booktitle\":\"Proceedings of the 31st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2018)\",\"bibtex\":\"@inproceedings{\\n title = {Exergy assessment of vinasse disposal alternatives: Concentration, anaerobic digestion and fertirrigation},\\n type = {inproceedings},\\n year = {2018},\\n keywords = {Anaerobic digestion,Biogas,Evaporative concentration,Exergy,Vinasse},\\n id = {6a47505f-46a4-3b09-9c0e-ee71eb1e9cf5},\\n created = {2019-04-24T13:07:47.767Z},\\n file_attached = {false},\\n profile_id = {0975795e-74f9-3538-96df-f91d2a331893},\\n last_modified = {2019-10-05T12:27:38.527Z},\\n read = {false},\\n starred = {false},\\n authored = {true},\\n confirmed = {true},\\n hidden = {false},\\n citation_key = {Nakashima2018},\\n private_publication = {false},\\n abstract = {Vinasse is the main liquid effluent of ethanol distillation and, since it can cause damages in water and soil resources, different solutions have been proposed to correctly dispose this wastewater. The use as fertilizer in sugarcane irrigation, called fertirrigation, is the main alternative practiced in Brazilian distilleries and it can be enhanced with vinasse concentration and/or biogas production by anaerobic digestion (AD). However, few studies have evaluated the performance of those systems and their combination in order to compare and improve the efficiency of vinasse treatment. Thus, an exergy analysis comparing five combinations of fertirrigation, vinasse concentration and anaerobic digestion, including power generation from biogas, was performed using a thermodynamic model and the Anaerobic Digestion Model Nº1 developed in Aspen Plus and Matlab. The highest exergy efficiency of 27.9% was attained for an average distillery with an AD power plant concentrating digested vinasse. This case performed better than others because all vinasse was treated and part of vinasse water exergy was recovered in the concentration process. Furthermore, the heat integration between AD power plant and vinasse concentration increased the exergy efficiency of those processes in 9-23% and reduced steam consumption in 12-25%. For all cases, fertirrigation was the main source of irreversibilities due to the organic substances exergy losses, while anaerobic digestion reduced the total exergy destroyed.},\\n bibtype = {inproceedings},\\n author = {Nakashima, R.N. and de Oliveira, S.},\\n booktitle = {Proceedings of the 31st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2018)}\\n}\",\"author_short\":[\"Nakashima,  R.\",\"de Oliveira,  S.\"],\"biburl\":\"https://bibbase.org/service/mendeley/0975795e-74f9-3538-96df-f91d2a331893\",\"bibbaseid\":\"nakashima-deoliveira-exergyassessmentofvinassedisposalalternativesconcentrationanaerobicdigestionandfertirrigation-2018\",\"role\":\"author\",\"urls\":{},\"keyword\":[\"Anaerobic digestion\",\"Biogas\",\"Evaporative concentration\",\"Exergy\",\"Vinasse\"],\"metadata\":{\"authorlinks\":{}},\"downloads\":0,\"html\":\"\"},{\"title\":\"Integrated anaerobic digestion and gasification processes for upgrade of ethanol biorefinery residues\",\"type\":\"article\",\"year\":\"2019\",\"keywords\":\"anaerobic digestion,biogas,energy integration,exergy,gasification\",\"pages\":\"104-114\",\"volume\":\"99\",\"websites\":\"http://papers.itc.pw.edu.pl/index.php/JPT/article/view/1475\",\"id\":\"87b50ca4-1909-3b4a-8c1b-2ec4650f63ae\",\"created\":\"2019-04-24T13:13:43.676Z\",\"file_attached\":\"true\",\"profile_id\":\"0975795e-74f9-3538-96df-f91d2a331893\",\"last_modified\":\"2019-12-02T12:52:57.576Z\",\"read\":false,\"starred\":false,\"authored\":\"true\",\"confirmed\":\"true\",\"hidden\":false,\"citation_key\":\"Nakashima2019\",\"private_publication\":false,\"abstract\":\"The upgrading of the biorefineries residues is a possible way to increase the overall process efficiency while attaining economical revenues from wastes that otherwise would be discarded. In this sense, anaerobic digestion and gasification represent interesting alternatives to convert organic residues into biofuels, electricity or other bioproducts. However, few studies have explored energy integration possibilities between those options or evaluated various final product pathways. Thus, in this work, various scenarios aimed at capitalizing the main residues of the sugarcane ethanol industry (vinasse and bagasse) are investigated. Two process layouts combining anaerobic digestion and gasification are proposed for each desired product (methane, hydrogen or power). The highest exergy efficiency (48%) was obtained for the configuration focused on methane production and using a combined cycle, since it requires fewer resources and separation steps to convert feedstock into ex-portable products. On the other hand, exergy was primarily destroyed in vinasse disposal, since a significant fraction of its organic wastes are inert to anaerobic digestion, followed by the bagasse gasifier and utility systems, due to the irreversible reactions occurring in these processes. In short, this study points to some improvement opportunities and reinforces the advantages of the waste capitalization concept.\",\"bibtype\":\"article\",\"author\":\"Nakashima, R N and Flórez-Orrego, D and Oliveira Junior, S\",\"journal\":\"Journal of Power Technologies\",\"number\":\"2\",\"bibtex\":\"@article{\\n title = {Integrated anaerobic digestion and gasification processes for upgrade of ethanol biorefinery residues},\\n type = {article},\\n year = {2019},\\n keywords = {anaerobic digestion,biogas,energy integration,exergy,gasification},\\n pages = {104-114},\\n volume = {99},\\n websites = {http://papers.itc.pw.edu.pl/index.php/JPT/article/view/1475},\\n id = {87b50ca4-1909-3b4a-8c1b-2ec4650f63ae},\\n created = {2019-04-24T13:13:43.676Z},\\n file_attached = {true},\\n profile_id = {0975795e-74f9-3538-96df-f91d2a331893},\\n last_modified = {2019-12-02T12:52:57.576Z},\\n read = {false},\\n starred = {false},\\n authored = {true},\\n confirmed = {true},\\n hidden = {false},\\n citation_key = {Nakashima2019},\\n private_publication = {false},\\n abstract = {The upgrading of the biorefineries residues is a possible way to increase the overall process efficiency while attaining economical revenues from wastes that otherwise would be discarded. In this sense, anaerobic digestion and gasification represent interesting alternatives to convert organic residues into biofuels, electricity or other bioproducts. However, few studies have explored energy integration possibilities between those options or evaluated various final product pathways. Thus, in this work, various scenarios aimed at capitalizing the main residues of the sugarcane ethanol industry (vinasse and bagasse) are investigated. Two process layouts combining anaerobic digestion and gasification are proposed for each desired product (methane, hydrogen or power). The highest exergy efficiency (48%) was obtained for the configuration focused on methane production and using a combined cycle, since it requires fewer resources and separation steps to convert feedstock into ex-portable products. On the other hand, exergy was primarily destroyed in vinasse disposal, since a significant fraction of its organic wastes are inert to anaerobic digestion, followed by the bagasse gasifier and utility systems, due to the irreversible reactions occurring in these processes. In short, this study points to some improvement opportunities and reinforces the advantages of the waste capitalization concept.},\\n bibtype = {article},\\n author = {Nakashima, R N and Flórez-Orrego, D and Oliveira Junior, S},\\n journal = {Journal of Power Technologies},\\n number = {2}\\n}\",\"author_short\":[\"Nakashima,  R., N.\",\"Flórez-Orrego,  D.\",\"Oliveira Junior,  S.\"],\"urls\":{\"Website\":\"http://papers.itc.pw.edu.pl/index.php/JPT/article/view/1475\"},\"biburl\":\"https://bibbase.org/service/mendeley/0975795e-74f9-3538-96df-f91d2a331893\",\"bibbaseid\":\"nakashima-flrezorrego-oliveirajunior-integratedanaerobicdigestionandgasificationprocessesforupgradeofethanolbiorefineryresidues-2019\",\"role\":\"author\",\"keyword\":[\"anaerobic digestion\",\"biogas\",\"energy integration\",\"exergy\",\"gasification\"],\"metadata\":{\"authorlinks\":{}},\"downloads\":0,\"html\":\"\"},{\"title\":\"Avaliação exergética da geração e uso de biogás no setor sucroenergético.\",\"type\":\"phdthesis\",\"year\":\"2018\",\"pages\":\"140\",\"websites\":\"http://www.teses.usp.br/teses/disponiveis/3/3150/tde-27082018-153742/\",\"city\":\"São Paulo\",\"institution\":\"Universidade de São Paulo\",\"department\":\"Escola Politécnica da USP\",\"id\":\"c10a9faf-a7b0-3d57-a790-120b03e79701\",\"created\":\"2019-04-24T13:17:48.305Z\",\"file_attached\":false,\"profile_id\":\"0975795e-74f9-3538-96df-f91d2a331893\",\"last_modified\":\"2019-10-05T12:27:38.500Z\",\"read\":false,\"starred\":false,\"authored\":\"true\",\"confirmed\":\"true\",\"hidden\":false,\"citation_key\":\"Nakashima2018b\",\"private_publication\":false,\"abstract\":\"The residue of the first distillation of wine, vinasse, stands outs in the sugarcane ethanol production due to its huge volume and high concentration of organic substances. The anaerobic treatment of this effluent can enhance its physical-chemical characteristics (e. g. pH and COD) in addition to produce an alternative fuel to natural gas, the biogas. However, although there are possible gains in the energy and environmental aspects, this technology presents difficulties to become viable in Brazilian market. Therefore, this work proposes a new thermodynamic analysis, based on the exergy method, of the potential of vinasse and biogas produced in its anaerobic treatment. In order to accomplish this, the anaerobic digestion of vinasse was modeled with ADM1 (Anaerobic Digestion Model Nº1) and the chemical exergy calculation of this effluent was updated. Thus, the results obtained indicate that the anaerobic treatment can recover a significant part of vinasse exergy (44-52% of 189-1529 kJ/l), depending on the digestible material concentration, as well as the anaerobic reactor operation. It also can be notice that, although anaerobic digestion be more efficient at higher retention times, it is desirable to maximize treated vinasse volume to the detriment of conversion quality. Furthermore, the biogas production yearly performance is also affected by the reactor start-up process and the ethanol production seasonality. On the other hand, the biogas plant promotes higher reductions of exergy destruction in comparison with fertirrigation and vinasse concentration. Possible thermal integrations between the biogas plant and the vinasse concentration plant were proposed and analyzed, reaching better exergy efficiencies and reduced thermal demand. In general, this study demonstrates the exergy method application in organic residues upgrade by biogas production.\",\"bibtype\":\"phdthesis\",\"author\":\"Nakashima, Rafael Nogueira\",\"doi\":\"10.11606/D.3.2018.tde-27082018-153742\",\"bibtex\":\"@phdthesis{\\n title = {Avaliação exergética da geração e uso de biogás no setor sucroenergético.},\\n type = {phdthesis},\\n year = {2018},\\n pages = {140},\\n websites = {http://www.teses.usp.br/teses/disponiveis/3/3150/tde-27082018-153742/},\\n city = {São Paulo},\\n institution = {Universidade de São Paulo},\\n department = {Escola Politécnica da USP},\\n id = {c10a9faf-a7b0-3d57-a790-120b03e79701},\\n created = {2019-04-24T13:17:48.305Z},\\n file_attached = {false},\\n profile_id = {0975795e-74f9-3538-96df-f91d2a331893},\\n last_modified = {2019-10-05T12:27:38.500Z},\\n read = {false},\\n starred = {false},\\n authored = {true},\\n confirmed = {true},\\n hidden = {false},\\n citation_key = {Nakashima2018b},\\n private_publication = {false},\\n abstract = {The residue of the first distillation of wine, vinasse, stands outs in the sugarcane ethanol production due to its huge volume and high concentration of organic substances. The anaerobic treatment of this effluent can enhance its physical-chemical characteristics (e. g. pH and COD) in addition to produce an alternative fuel to natural gas, the biogas. However, although there are possible gains in the energy and environmental aspects, this technology presents difficulties to become viable in Brazilian market. Therefore, this work proposes a new thermodynamic analysis, based on the exergy method, of the potential of vinasse and biogas produced in its anaerobic treatment. In order to accomplish this, the anaerobic digestion of vinasse was modeled with ADM1 (Anaerobic Digestion Model Nº1) and the chemical exergy calculation of this effluent was updated. Thus, the results obtained indicate that the anaerobic treatment can recover a significant part of vinasse exergy (44-52% of 189-1529 kJ/l), depending on the digestible material concentration, as well as the anaerobic reactor operation. It also can be notice that, although anaerobic digestion be more efficient at higher retention times, it is desirable to maximize treated vinasse volume to the detriment of conversion quality. Furthermore, the biogas production yearly performance is also affected by the reactor start-up process and the ethanol production seasonality. On the other hand, the biogas plant promotes higher reductions of exergy destruction in comparison with fertirrigation and vinasse concentration. Possible thermal integrations between the biogas plant and the vinasse concentration plant were proposed and analyzed, reaching better exergy efficiencies and reduced thermal demand. In general, this study demonstrates the exergy method application in organic residues upgrade by biogas production.},\\n bibtype = {phdthesis},\\n author = {Nakashima, Rafael Nogueira},\\n doi = {10.11606/D.3.2018.tde-27082018-153742}\\n}\",\"author_short\":[\"Nakashima,  R., N.\"],\"urls\":{\"Website\":\"http://www.teses.usp.br/teses/disponiveis/3/3150/tde-27082018-153742/\"},\"biburl\":\"https://bibbase.org/service/mendeley/0975795e-74f9-3538-96df-f91d2a331893\",\"bibbaseid\":\"nakashima-avaliaoexergticadageraoeusodebiogsnosetorsucroenergtico-2018\",\"role\":\"author\",\"metadata\":{\"authorlinks\":{}},\"downloads\":0,\"html\":\"\"},{\"title\":\"Exergy analysis of biogas production in ethanol distilleries\",\"type\":\"inproceedings\",\"year\":\"2017\",\"pages\":\"10\",\"issue\":\"185\",\"websites\":\"http://abcm.org.br/anais-de-eventos/COB17/0185\",\"publisher\":\"ABCM\",\"id\":\"9d55d0b8-f977-3004-9614-0fe31ca504c1\",\"created\":\"2019-04-24T13:19:59.769Z\",\"file_attached\":false,\"profile_id\":\"0975795e-74f9-3538-96df-f91d2a331893\",\"last_modified\":\"2019-10-05T12:27:38.937Z\",\"read\":false,\"starred\":false,\"authored\":\"true\",\"confirmed\":\"true\",\"hidden\":false,\"citation_key\":\"NogueiraNakashima2017\",\"private_publication\":false,\"abstract\":\"Vinasse is the main liquid effluent of ethanol distillation and, when incorrectly disposed, can cause damages in water and soil resources. Since this effluent has a high concentration of organic compounds, anaerobic digestion is a possible solution to reduce vinasse chemical organic demand (COD) while producing biogas, an alternative fuel. However, this technology has some challenges related to biogas economical devaluation and high investments costs, which demands models to analyze this systems performance. Thus, the focus of this study was to develop a biogas production model, combining Matlab® and Aspen Plus®, to evaluate the anaerobic treatment efficiency by using exergy analysis. The results show that a significant quantity of exergy can be partially retrieved (44-52%) from vinasse with biogas production. In general, increases in hydraulic retention times (HRT) and COD concentrations tend to slightly increment anaerobic digestion efficiency, while high sulfates concentrations have the opposite effect. However, the biogas plant exergy efficiency tends to increase at lower HRT due to higher biogas production and lower portion of untreated vinasse. On average, the main sources of irreversibilities are the cooling system (45%) and the anaerobic reactor (48%). Moreover, the biogas plant performance throughout the year is considerably affected by ethanol production seasonality, start-up times and number of reactors.\",\"bibtype\":\"inproceedings\",\"author\":\"Nogueira Nakashima, Rafael and de Oliveira Junior, Silvio\",\"doi\":\"10.26678/ABCM.COBEM2017.COB17-0185\",\"booktitle\":\"Proceedings of the 24th ABCM International Congress of Mechanical Engineering (COBEM 2017)\",\"bibtex\":\"@inproceedings{\\n title = {Exergy analysis of biogas production in ethanol distilleries},\\n type = {inproceedings},\\n year = {2017},\\n pages = {10},\\n issue = {185},\\n websites = {http://abcm.org.br/anais-de-eventos/COB17/0185},\\n publisher = {ABCM},\\n id = {9d55d0b8-f977-3004-9614-0fe31ca504c1},\\n created = {2019-04-24T13:19:59.769Z},\\n file_attached = {false},\\n profile_id = {0975795e-74f9-3538-96df-f91d2a331893},\\n last_modified = {2019-10-05T12:27:38.937Z},\\n read = {false},\\n starred = {false},\\n authored = {true},\\n confirmed = {true},\\n hidden = {false},\\n citation_key = {NogueiraNakashima2017},\\n private_publication = {false},\\n abstract = {Vinasse is the main liquid effluent of ethanol distillation and, when incorrectly disposed, can cause damages in water and soil resources. Since this effluent has a high concentration of organic compounds, anaerobic digestion is a possible solution to reduce vinasse chemical organic demand (COD) while producing biogas, an alternative fuel. However, this technology has some challenges related to biogas economical devaluation and high investments costs, which demands models to analyze this systems performance. Thus, the focus of this study was to develop a biogas production model, combining Matlab® and Aspen Plus®, to evaluate the anaerobic treatment efficiency by using exergy analysis. The results show that a significant quantity of exergy can be partially retrieved (44-52%) from vinasse with biogas production. In general, increases in hydraulic retention times (HRT) and COD concentrations tend to slightly increment anaerobic digestion efficiency, while high sulfates concentrations have the opposite effect. However, the biogas plant exergy efficiency tends to increase at lower HRT due to higher biogas production and lower portion of untreated vinasse. On average, the main sources of irreversibilities are the cooling system (45%) and the anaerobic reactor (48%). Moreover, the biogas plant performance throughout the year is considerably affected by ethanol production seasonality, start-up times and number of reactors.},\\n bibtype = {inproceedings},\\n author = {Nogueira Nakashima, Rafael and de Oliveira Junior, Silvio},\\n doi = {10.26678/ABCM.COBEM2017.COB17-0185},\\n booktitle = {Proceedings of the 24th ABCM International Congress of Mechanical Engineering (COBEM 2017)}\\n}\",\"author_short\":[\"Nogueira Nakashima,  R.\",\"de Oliveira Junior,  S.\"],\"urls\":{\"Website\":\"http://abcm.org.br/anais-de-eventos/COB17/0185\"},\"biburl\":\"https://bibbase.org/service/mendeley/0975795e-74f9-3538-96df-f91d2a331893\",\"bibbaseid\":\"nogueiranakashima-deoliveirajunior-exergyanalysisofbiogasproductioninethanoldistilleries-2017\",\"role\":\"author\",\"metadata\":{\"authorlinks\":{}},\"downloads\":0,\"html\":\"\"},{\"title\":\"Integrated anaerobic digestion and gasification processes for upgrade of ethanol biorefinery residues\",\"type\":\"inproceedings\",\"year\":\"2018\",\"pages\":\"11\",\"id\":\"7524b5d9-ea21-388c-a5ba-32c61927daea\",\"created\":\"2019-04-24T13:22:03.502Z\",\"file_attached\":false,\"profile_id\":\"0975795e-74f9-3538-96df-f91d2a331893\",\"last_modified\":\"2019-10-05T12:27:38.955Z\",\"read\":false,\"starred\":false,\"authored\":\"true\",\"confirmed\":\"true\",\"hidden\":false,\"private_publication\":false,\"abstract\":\"The upgrading of the biorefineries residues is a possible way to increase the overall process efficiency while attaining economical revenues from wastes that otherwise would be disposed. In this sense, anaerobic digestion and gasification represent interesting alternatives to convert organic residues into biofuels, electricity or other bioproducts. However, few studies have explored energy integration possibilities between those options or evaluated various final product pathways. Thus, in this work, different scenarios aimed to capitalize the main residues of the sugarcane ethanol industry (vinasse and bagasse) are investigated. In order to calculate the mass, energy and exergy balances, a thermodynamic model is developed in Aspen Plus and connected with the Anaerobic Digestion Model Nº1 (ADM1) in Matlab. Two process layouts combining anaerobic digestion and gasification are proposed for each desired product (methane, hydrogen or power). As a result, the highest exergy efficiency (48%) was obtained for the configuration focused in methane production and using a combined cycle, since it requires fewer resources and reaction steps to feedstock conversion. On the other hand, exergy was primarily destroyed in vinasse disposal, since anaerobic digestion cannot fully convert organic wastes, followed by the bagasse gasifier and utility systems, due to the irreversible reactions occurring at high temperatures. In short, this study points to some improvement opportunities and reinforces the advantages of the waste capitalization concept.\",\"bibtype\":\"inproceedings\",\"author\":\"Nakashima, R. N. and Flórez-Orrego, D. and Oliveira Junior, S.\",\"booktitle\":\"Proceedings of 5th International Conference on Contemporary Problems of Thermal Engineering (CPOTE 2018)\",\"bibtex\":\"@inproceedings{\\n title = {Integrated anaerobic digestion and gasification processes for upgrade of ethanol biorefinery residues},\\n type = {inproceedings},\\n year = {2018},\\n pages = {11},\\n id = {7524b5d9-ea21-388c-a5ba-32c61927daea},\\n created = {2019-04-24T13:22:03.502Z},\\n file_attached = {false},\\n profile_id = {0975795e-74f9-3538-96df-f91d2a331893},\\n last_modified = {2019-10-05T12:27:38.955Z},\\n read = {false},\\n starred = {false},\\n authored = {true},\\n confirmed = {true},\\n hidden = {false},\\n private_publication = {false},\\n abstract = {The upgrading of the biorefineries residues is a possible way to increase the overall process efficiency while attaining economical revenues from wastes that otherwise would be disposed. In this sense, anaerobic digestion and gasification represent interesting alternatives to convert organic residues into biofuels, electricity or other bioproducts. However, few studies have explored energy integration possibilities between those options or evaluated various final product pathways. Thus, in this work, different scenarios aimed to capitalize the main residues of the sugarcane ethanol industry (vinasse and bagasse) are investigated. In order to calculate the mass, energy and exergy balances, a thermodynamic model is developed in Aspen Plus and connected with the Anaerobic Digestion Model Nº1 (ADM1) in Matlab. Two process layouts combining anaerobic digestion and gasification are proposed for each desired product (methane, hydrogen or power). As a result, the highest exergy efficiency (48%) was obtained for the configuration focused in methane production and using a combined cycle, since it requires fewer resources and reaction steps to feedstock conversion. On the other hand, exergy was primarily destroyed in vinasse disposal, since anaerobic digestion cannot fully convert organic wastes, followed by the bagasse gasifier and utility systems, due to the irreversible reactions occurring at high temperatures. In short, this study points to some improvement opportunities and reinforces the advantages of the waste capitalization concept.},\\n bibtype = {inproceedings},\\n author = {Nakashima, R. N. and Flórez-Orrego, D. and Oliveira Junior, S.},\\n booktitle = {Proceedings of 5th International Conference on Contemporary Problems of Thermal Engineering (CPOTE 2018)}\\n}\",\"author_short\":[\"Nakashima,  R., N.\",\"Flórez-Orrego,  D.\",\"Oliveira Junior,  S.\"],\"biburl\":\"https://bibbase.org/service/mendeley/0975795e-74f9-3538-96df-f91d2a331893\",\"bibbaseid\":\"nakashima-flrezorrego-oliveirajunior-integratedanaerobicdigestionandgasificationprocessesforupgradeofethanolbiorefineryresidues-2018\",\"role\":\"author\",\"urls\":{},\"metadata\":{\"authorlinks\":{}},\"downloads\":0,\"html\":\"\"},{\"title\":\"Comparative exergy assessment of vinasse disposal alternatives: Concentration, anaerobic digestion and fertirrigation\",\"type\":\"article\",\"year\":\"2020\",\"keywords\":\"Anaerobic digestion,Biogas,Evaporative concentration,Exergy,Vinasse\",\"pages\":\"1969-1978\",\"volume\":\"147\",\"websites\":\"https://linkinghub.elsevier.com/retrieve/pii/S0960148119314661\",\"month\":\"3\",\"publisher\":\"Elsevier Ltd\",\"day\":\"1\",\"id\":\"0deb59b7-7d6b-33bb-988d-e4e83211fe0e\",\"created\":\"2019-10-05T11:57:09.272Z\",\"file_attached\":false,\"profile_id\":\"0975795e-74f9-3538-96df-f91d2a331893\",\"last_modified\":\"2020-10-16T17:48:54.405Z\",\"read\":false,\"starred\":false,\"authored\":\"true\",\"confirmed\":\"true\",\"hidden\":false,\"citation_key\":\"Nakashima2019\",\"private_publication\":false,\"abstract\":\"Vinasse is the main liquid effluent of ethanol distillation and, since it can cause damages in water and soil resources, different solutions have been proposed to correctly dispose this wastewater. The use as fertilizer in sugarcane irrigation, called fertirrigation, is the main alternative practiced in Brazilian distilleries and it can be enhanced with vinasse concentration and/or biogas production by anaerobic digestion (AD). However, few studies have evaluated the performance of those systems and their combination in order to compare and improve the efficiency of vinasse treatment. Thus, an exergy analysis comparing five combinations of fertirrigation, vinasse concentration and anaerobic digestion, including power generation from biogas, was performed using a thermodynamic model and the Anaerobic Digestion Model Nº1 developed in Aspen Plus and Matlab. The highest exergy efficiency of 27.9% was attained for an average distillery with an AD power plant concentrating digested vinasse. This case performed better than others because all vinasse was treated and part of vinasse water exergy was recovered in the concentration process. Furthermore, the heat integration between AD power plant and vinasse concentration increased the exergy efficiency of those processes in 9-23% and reduced steam consumption in 12-25%. For all cases, fertirrigation was the main source of irreversibilities due to the organic substances exergy losses, while anaerobic digestion reduced the total exergy destroyed.\",\"bibtype\":\"article\",\"author\":\"Nakashima, R.N. and de Oliveira Junior, S.\",\"doi\":\"10.1016/j.renene.2019.09.124\",\"journal\":\"Renewable Energy\",\"bibtex\":\"@article{\\n title = {Comparative exergy assessment of vinasse disposal alternatives: Concentration, anaerobic digestion and fertirrigation},\\n type = {article},\\n year = {2020},\\n keywords = {Anaerobic digestion,Biogas,Evaporative concentration,Exergy,Vinasse},\\n pages = {1969-1978},\\n volume = {147},\\n websites = {https://linkinghub.elsevier.com/retrieve/pii/S0960148119314661},\\n month = {3},\\n publisher = {Elsevier Ltd},\\n day = {1},\\n id = {0deb59b7-7d6b-33bb-988d-e4e83211fe0e},\\n created = {2019-10-05T11:57:09.272Z},\\n file_attached = {false},\\n profile_id = {0975795e-74f9-3538-96df-f91d2a331893},\\n last_modified = {2020-10-16T17:48:54.405Z},\\n read = {false},\\n starred = {false},\\n authored = {true},\\n confirmed = {true},\\n hidden = {false},\\n citation_key = {Nakashima2019},\\n private_publication = {false},\\n abstract = {Vinasse is the main liquid effluent of ethanol distillation and, since it can cause damages in water and soil resources, different solutions have been proposed to correctly dispose this wastewater. The use as fertilizer in sugarcane irrigation, called fertirrigation, is the main alternative practiced in Brazilian distilleries and it can be enhanced with vinasse concentration and/or biogas production by anaerobic digestion (AD). However, few studies have evaluated the performance of those systems and their combination in order to compare and improve the efficiency of vinasse treatment. Thus, an exergy analysis comparing five combinations of fertirrigation, vinasse concentration and anaerobic digestion, including power generation from biogas, was performed using a thermodynamic model and the Anaerobic Digestion Model Nº1 developed in Aspen Plus and Matlab. The highest exergy efficiency of 27.9% was attained for an average distillery with an AD power plant concentrating digested vinasse. This case performed better than others because all vinasse was treated and part of vinasse water exergy was recovered in the concentration process. Furthermore, the heat integration between AD power plant and vinasse concentration increased the exergy efficiency of those processes in 9-23% and reduced steam consumption in 12-25%. For all cases, fertirrigation was the main source of irreversibilities due to the organic substances exergy losses, while anaerobic digestion reduced the total exergy destroyed.},\\n bibtype = {article},\\n author = {Nakashima, R.N. and de Oliveira Junior, S.},\\n doi = {10.1016/j.renene.2019.09.124},\\n journal = {Renewable Energy}\\n}\",\"author_short\":[\"Nakashima,  R.\",\"de Oliveira Junior,  S.\"],\"urls\":{\"Website\":\"https://linkinghub.elsevier.com/retrieve/pii/S0960148119314661\"},\"biburl\":\"https://bibbase.org/service/mendeley/0975795e-74f9-3538-96df-f91d2a331893\",\"bibbaseid\":\"nakashima-deoliveirajunior-comparativeexergyassessmentofvinassedisposalalternativesconcentrationanaerobicdigestionandfertirrigation-2020\",\"role\":\"author\",\"keyword\":[\"Anaerobic digestion\",\"Biogas\",\"Evaporative concentration\",\"Exergy\",\"Vinasse\"],\"metadata\":{\"authorlinks\":{}},\"downloads\":0,\"html\":\"\"},{\"title\":\"Exergoeconomic and environmental assessment of production and end use of sugarcane residues derivatives\",\"type\":\"inproceedings\",\"year\":\"2019\",\"keywords\":\"Biomethane,CO 2 emissions,Ethanol,Exergy,Hydrogen\",\"id\":\"c6916c27-431e-34f4-9dc4-55f2822d3384\",\"created\":\"2019-10-05T11:58:11.375Z\",\"file_attached\":false,\"profile_id\":\"0975795e-74f9-3538-96df-f91d2a331893\",\"last_modified\":\"2019-10-05T12:27:39.960Z\",\"read\":false,\"starred\":false,\"authored\":\"true\",\"confirmed\":\"true\",\"hidden\":false,\"private_publication\":false,\"abstract\":\"The upgrade of sugarcane industry residues, such as vinasse and bagasse, has a notably potential for large scale production of biofuels in Brazil. Despite this fact, the biomass conversion into either electricity or biofuels requires various energy intensive processes that may drastically affect its technical and environmental competitiveness against their non-renewable counterparts. Accordingly, the mapping of the generation of the process irreversibility and their associated atmospheric emissions may help, by issuing appropriate mitigation tasks, in the reduction of exergy consumption rates and environmental impact. Therefore, in this paper, a comparative assessment between the total (c t) and non-renewable (c nr) exergy costs and specific CO 2 emissions (c co2) of the electricity, methane and hydrogen produced from sugarcane vinasse and bagasse is presented and compared with the conventional (fossil fuel-based) supply chains. As a result, a strikingly high average renewable to non-renewable ratio (cr cnr) of 15.2 is estimated for the biofuels derived from the waste upgrade plant. However, due to the larger number of process involved in the conversion of biomass resources, the total exergy costs of biofuels delivered vary from 2.6 to 2.2 times higher in comparison to those derived from fossil fuels. On the other hand, although hydrogen production from sugarcane wastes involves more processes, its unit exergy costs in the end-use stage (transportation service) were found to be the lowest among the studied biofuels, partially due to the higher efficiency of hydrogen-fueled transportation technologies. In general, the production of biofuels and electricity from sugarcane wastes can offer fuels with greatly reduced CO 2 specific emissions and low non-renewable energy consumption shares.\",\"bibtype\":\"inproceedings\",\"author\":\"Nakashima, R N and Flórez-Orrego, D and de Oliveira Junior, S\",\"booktitle\":\"Proceedings of 32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2019)\",\"bibtex\":\"@inproceedings{\\n title = {Exergoeconomic and environmental assessment of production and end use of sugarcane residues derivatives},\\n type = {inproceedings},\\n year = {2019},\\n keywords = {Biomethane,CO 2 emissions,Ethanol,Exergy,Hydrogen},\\n id = {c6916c27-431e-34f4-9dc4-55f2822d3384},\\n created = {2019-10-05T11:58:11.375Z},\\n file_attached = {false},\\n profile_id = {0975795e-74f9-3538-96df-f91d2a331893},\\n last_modified = {2019-10-05T12:27:39.960Z},\\n read = {false},\\n starred = {false},\\n authored = {true},\\n confirmed = {true},\\n hidden = {false},\\n private_publication = {false},\\n abstract = {The upgrade of sugarcane industry residues, such as vinasse and bagasse, has a notably potential for large scale production of biofuels in Brazil. Despite this fact, the biomass conversion into either electricity or biofuels requires various energy intensive processes that may drastically affect its technical and environmental competitiveness against their non-renewable counterparts. Accordingly, the mapping of the generation of the process irreversibility and their associated atmospheric emissions may help, by issuing appropriate mitigation tasks, in the reduction of exergy consumption rates and environmental impact. Therefore, in this paper, a comparative assessment between the total (c t) and non-renewable (c nr) exergy costs and specific CO 2 emissions (c co2) of the electricity, methane and hydrogen produced from sugarcane vinasse and bagasse is presented and compared with the conventional (fossil fuel-based) supply chains. As a result, a strikingly high average renewable to non-renewable ratio (cr cnr) of 15.2 is estimated for the biofuels derived from the waste upgrade plant. However, due to the larger number of process involved in the conversion of biomass resources, the total exergy costs of biofuels delivered vary from 2.6 to 2.2 times higher in comparison to those derived from fossil fuels. On the other hand, although hydrogen production from sugarcane wastes involves more processes, its unit exergy costs in the end-use stage (transportation service) were found to be the lowest among the studied biofuels, partially due to the higher efficiency of hydrogen-fueled transportation technologies. In general, the production of biofuels and electricity from sugarcane wastes can offer fuels with greatly reduced CO 2 specific emissions and low non-renewable energy consumption shares.},\\n bibtype = {inproceedings},\\n author = {Nakashima, R N and Flórez-Orrego, D and de Oliveira Junior, S},\\n booktitle = {Proceedings of 32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2019)}\\n}\",\"author_short\":[\"Nakashima,  R., N.\",\"Flórez-Orrego,  D.\",\"de Oliveira Junior,  S.\"],\"biburl\":\"https://bibbase.org/service/mendeley/0975795e-74f9-3538-96df-f91d2a331893\",\"bibbaseid\":\"nakashima-flrezorrego-deoliveirajunior-exergoeconomicandenvironmentalassessmentofproductionandenduseofsugarcaneresiduesderivatives-2019\",\"role\":\"author\",\"urls\":{},\"keyword\":[\"Biomethane\",\"CO 2 emissions\",\"Ethanol\",\"Exergy\",\"Hydrogen\"],\"metadata\":{\"authorlinks\":{}},\"downloads\":0,\"html\":\"\"},{\"title\":\"Sugarcane bagasse and vinasse conversion to electricity and biofuels: an exergoeconomic and environmental assessment\",\"type\":\"article\",\"year\":\"2020\",\"pages\":\"44\",\"volume\":\"33\",\"websites\":\"http://www.inderscience.com/link.php?id=109623\",\"id\":\"ca13dc44-f080-3b1b-8a4b-90a94911b333\",\"created\":\"2020-10-03T19:34:37.875Z\",\"file_attached\":false,\"profile_id\":\"0975795e-74f9-3538-96df-f91d2a331893\",\"last_modified\":\"2020-10-03T19:34:37.875Z\",\"read\":false,\"starred\":false,\"authored\":\"true\",\"confirmed\":false,\"hidden\":false,\"private_publication\":false,\"abstract\":\"Biomass conversion into either electricity or biofuels requires various energy intensive processes that may drastically affect its technical and environmental competitiveness against their non-renewable counterparts. Therefore, in this paper, a comparative assessment between the total (cT) and non-renewable (cNR) unit exergy costs and specific CO2 emissions (cCO2) of the electricity, methane and hydrogen produced from sugarcane vinasse and bagasse is presented and compared with the conventional (fossil fuel-based) supply chains. As a result, the non-renewable unit exergy costs and specific CO2 emissions for the transportation service in all cases analysed are 3.1 to 4.7 times lower compared with conventional fossil fuels (e.g., diesel, gasoline, natural gas and hydrogen). Among the waste upgrade alternatives, methane production is able to maximise the exergy flow rate of products in the transformation stage (52.4-58.6 MW), while hydrogen and electricity production can substantially increase the transportation service in the end-use stage (51.7-52.1%) and the operational revenues (2,706-2,889 EUR/h).\",\"bibtype\":\"article\",\"author\":\"Nakashima, Rafael Nogueira and Orrego, Daniel Flórez and Velásquez, Hector Ivan and Junior, Silvio De Oliveira\",\"doi\":\"10.1504/IJEX.2020.109623\",\"journal\":\"International Journal of Exergy\",\"number\":\"1\",\"bibtex\":\"@article{\\n title = {Sugarcane bagasse and vinasse conversion to electricity and biofuels: an exergoeconomic and environmental assessment},\\n type = {article},\\n year = {2020},\\n pages = {44},\\n volume = {33},\\n websites = {http://www.inderscience.com/link.php?id=109623},\\n id = {ca13dc44-f080-3b1b-8a4b-90a94911b333},\\n created = {2020-10-03T19:34:37.875Z},\\n file_attached = {false},\\n profile_id = {0975795e-74f9-3538-96df-f91d2a331893},\\n last_modified = {2020-10-03T19:34:37.875Z},\\n read = {false},\\n starred = {false},\\n authored = {true},\\n confirmed = {false},\\n hidden = {false},\\n private_publication = {false},\\n abstract = {Biomass conversion into either electricity or biofuels requires various energy intensive processes that may drastically affect its technical and environmental competitiveness against their non-renewable counterparts. Therefore, in this paper, a comparative assessment between the total (cT) and non-renewable (cNR) unit exergy costs and specific CO2 emissions (cCO2) of the electricity, methane and hydrogen produced from sugarcane vinasse and bagasse is presented and compared with the conventional (fossil fuel-based) supply chains. As a result, the non-renewable unit exergy costs and specific CO2 emissions for the transportation service in all cases analysed are 3.1 to 4.7 times lower compared with conventional fossil fuels (e.g., diesel, gasoline, natural gas and hydrogen). Among the waste upgrade alternatives, methane production is able to maximise the exergy flow rate of products in the transformation stage (52.4-58.6 MW), while hydrogen and electricity production can substantially increase the transportation service in the end-use stage (51.7-52.1%) and the operational revenues (2,706-2,889 EUR/h).},\\n bibtype = {article},\\n author = {Nakashima, Rafael Nogueira and Orrego, Daniel Flórez and Velásquez, Hector Ivan and Junior, Silvio De Oliveira},\\n doi = {10.1504/IJEX.2020.109623},\\n journal = {International Journal of Exergy},\\n number = {1}\\n}\",\"author_short\":[\"Nakashima,  R., N.\",\"Orrego,  D., F.\",\"Velásquez,  H., I.\",\"Junior,  S., D., O.\"],\"urls\":{\"Website\":\"http://www.inderscience.com/link.php?id=109623\"},\"biburl\":\"https://bibbase.org/service/mendeley/0975795e-74f9-3538-96df-f91d2a331893\",\"bibbaseid\":\"nakashima-orrego-velsquez-junior-sugarcanebagasseandvinasseconversiontoelectricityandbiofuelsanexergoeconomicandenvironmentalassessment-2020\",\"role\":\"author\",\"metadata\":{\"authorlinks\":{}},\"downloads\":0,\"html\":\"\"},{\"title\":\"Corrigendum to “Comparative exergy assessment of vinasse disposal alternatives: Concentration, anaerobic digestion and fertirrigation” [147, (1), 2020, 1969–1978]\",\"type\":\"article\",\"year\":\"2020\",\"pages\":\"1395\",\"volume\":\"156\",\"websites\":\"https://linkinghub.elsevier.com/retrieve/pii/S0960148120302718\",\"month\":\"8\",\"id\":\"8c51d70b-2060-34aa-9e33-549df3d7ac71\",\"created\":\"2020-10-03T19:38:36.579Z\",\"file_attached\":false,\"profile_id\":\"0975795e-74f9-3538-96df-f91d2a331893\",\"last_modified\":\"2020-10-03T19:38:36.579Z\",\"read\":false,\"starred\":false,\"authored\":\"true\",\"confirmed\":false,\"hidden\":false,\"private_publication\":false,\"bibtype\":\"article\",\"author\":\"Nogueira Nakashima, Rafael and de Oliveira Junior, Silvio\",\"doi\":\"10.1016/j.renene.2020.02.076\",\"journal\":\"Renewable Energy\",\"bibtex\":\"@article{\\n title = {Corrigendum to “Comparative exergy assessment of vinasse disposal alternatives: Concentration, anaerobic digestion and fertirrigation” [147, (1), 2020, 1969–1978]},\\n type = {article},\\n year = {2020},\\n pages = {1395},\\n volume = {156},\\n websites = {https://linkinghub.elsevier.com/retrieve/pii/S0960148120302718},\\n month = {8},\\n id = {8c51d70b-2060-34aa-9e33-549df3d7ac71},\\n created = {2020-10-03T19:38:36.579Z},\\n file_attached = {false},\\n profile_id = {0975795e-74f9-3538-96df-f91d2a331893},\\n last_modified = {2020-10-03T19:38:36.579Z},\\n read = {false},\\n starred = {false},\\n authored = {true},\\n confirmed = {false},\\n hidden = {false},\\n private_publication = {false},\\n bibtype = {article},\\n author = {Nogueira Nakashima, Rafael and de Oliveira Junior, Silvio},\\n doi = {10.1016/j.renene.2020.02.076},\\n journal = {Renewable Energy}\\n}\",\"author_short\":[\"Nogueira Nakashima,  R.\",\"de Oliveira Junior,  S.\"],\"urls\":{\"Website\":\"https://linkinghub.elsevier.com/retrieve/pii/S0960148120302718\"},\"biburl\":\"https://bibbase.org/service/mendeley/0975795e-74f9-3538-96df-f91d2a331893\",\"bibbaseid\":\"nogueiranakashima-deoliveirajunior-corrigendumtocomparativeexergyassessmentofvinassedisposalalternativesconcentrationanaerobicdigestionandfertirrigation1471202019691978-2020\",\"role\":\"author\",\"metadata\":{\"authorlinks\":{}},\"downloads\":0,\"html\":\"\"}],\n      metadata: {\"authorlinks\":{}},\n      ownerID: undefined\n    };\n  </script>\n\n  <script type=\"text/javascript\">\n  var site$;\n  if (typeof $ != 'undefined') {\n    console.log('existing jquery: storing and then restoring');\n    site$ = $;\n    $ = null;\n  }\n  </script>\n\n  <script src=\"https://ajax.googleapis.com/ajax/libs/jquery/2.2.4/jquery.min.js\">\n  </script>\n  <script type=\"text/javascript\">\n  if (site$) {\n    console.log('existing jquery: avoiding conflict and restoring');\n    bb$ = 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onclick=\"toggleAll()\">\n            <i class=\"fa fa-chevron-down fa-fw\"></i> Expand/Collapse All\n          </a>\n        </li>\n        <li>\n          <a download=\"all.bib\" href=\"data:text/bibtex;base64,@inproceedings{
 title = {Exergy assessment of vinasse disposal alternatives: Concentration, anaerobic digestion and fertirrigation},
 type = {inproceedings},
 year = {2018},
 keywords = {Anaerobic digestion,Biogas,Evaporative concentration,Exergy,Vinasse},
 id = {6a47505f-46a4-3b09-9c0e-ee71eb1e9cf5},
 created = {2019-04-24T13:07:47.767Z},
 file_attached = {false},
 profile_id = {0975795e-74f9-3538-96df-f91d2a331893},
 last_modified = {2019-10-05T12:27:38.527Z},
 read = {false},
 starred = {false},
 authored = {true},
 confirmed = {true},
 hidden = {false},
 citation_key = {Nakashima2018},
 private_publication = {false},
 abstract = {Vinasse is the main liquid effluent of ethanol distillation and, since it can cause damages in water and soil resources, different solutions have been proposed to correctly dispose this wastewater. The use as fertilizer in sugarcane irrigation, called fertirrigation, is the main alternative practiced in Brazilian distilleries and it can be enhanced with vinasse concentration and/or biogas production by anaerobic digestion (AD). However, few studies have evaluated the performance of those systems and their combination in order to compare and improve the efficiency of vinasse treatment. Thus, an exergy analysis comparing five combinations of fertirrigation, vinasse concentration and anaerobic digestion, including power generation from biogas, was performed using a thermodynamic model and the Anaerobic Digestion Model Nº1 developed in Aspen Plus and Matlab. The highest exergy efficiency of 27.9% was attained for an average distillery with an AD power plant concentrating digested vinasse. This case performed better than others because all vinasse was treated and part of vinasse water exergy was recovered in the concentration process. Furthermore, the heat integration between AD power plant and vinasse concentration increased the exergy efficiency of those processes in 9-23% and reduced steam consumption in 12-25%. For all cases, fertirrigation was the main source of irreversibilities due to the organic substances exergy losses, while anaerobic digestion reduced the total exergy destroyed.},
 bibtype = {inproceedings},
 author = {Nakashima, R.N. and de Oliveira, S.},
 booktitle = {Proceedings of the 31st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2018)}
}

@article{
 title = {Integrated anaerobic digestion and gasification processes for upgrade of ethanol biorefinery residues},
 type = {article},
 year = {2019},
 keywords = {anaerobic digestion,biogas,energy integration,exergy,gasification},
 pages = {104-114},
 volume = {99},
 websites = {http://papers.itc.pw.edu.pl/index.php/JPT/article/view/1475},
 id = {87b50ca4-1909-3b4a-8c1b-2ec4650f63ae},
 created = {2019-04-24T13:13:43.676Z},
 file_attached = {true},
 profile_id = {0975795e-74f9-3538-96df-f91d2a331893},
 last_modified = {2019-12-02T12:52:57.576Z},
 read = {false},
 starred = {false},
 authored = {true},
 confirmed = {true},
 hidden = {false},
 citation_key = {Nakashima2019},
 private_publication = {false},
 abstract = {The upgrading of the biorefineries residues is a possible way to increase the overall process efficiency while attaining economical revenues from wastes that otherwise would be discarded. In this sense, anaerobic digestion and gasification represent interesting alternatives to convert organic residues into biofuels, electricity or other bioproducts. However, few studies have explored energy integration possibilities between those options or evaluated various final product pathways. Thus, in this work, various scenarios aimed at capitalizing the main residues of the sugarcane ethanol industry (vinasse and bagasse) are investigated. Two process layouts combining anaerobic digestion and gasification are proposed for each desired product (methane, hydrogen or power). The highest exergy efficiency (48%) was obtained for the configuration focused on methane production and using a combined cycle, since it requires fewer resources and separation steps to convert feedstock into ex-portable products. On the other hand, exergy was primarily destroyed in vinasse disposal, since a significant fraction of its organic wastes are inert to anaerobic digestion, followed by the bagasse gasifier and utility systems, due to the irreversible reactions occurring in these processes. In short, this study points to some improvement opportunities and reinforces the advantages of the waste capitalization concept.},
 bibtype = {article},
 author = {Nakashima, R N and Flórez-Orrego, D and Oliveira Junior, S},
 journal = {Journal of Power Technologies},
 number = {2}
}

@phdthesis{
 title = {Avaliação exergética da geração e uso de biogás no setor sucroenergético.},
 type = {phdthesis},
 year = {2018},
 pages = {140},
 websites = {http://www.teses.usp.br/teses/disponiveis/3/3150/tde-27082018-153742/},
 city = {São Paulo},
 institution = {Universidade de São Paulo},
 department = {Escola Politécnica da USP},
 id = {c10a9faf-a7b0-3d57-a790-120b03e79701},
 created = {2019-04-24T13:17:48.305Z},
 file_attached = {false},
 profile_id = {0975795e-74f9-3538-96df-f91d2a331893},
 last_modified = {2019-10-05T12:27:38.500Z},
 read = {false},
 starred = {false},
 authored = {true},
 confirmed = {true},
 hidden = {false},
 citation_key = {Nakashima2018b},
 private_publication = {false},
 abstract = {The residue of the first distillation of wine, vinasse, stands outs in the sugarcane ethanol production due to its huge volume and high concentration of organic substances. The anaerobic treatment of this effluent can enhance its physical-chemical characteristics (e. g. pH and COD) in addition to produce an alternative fuel to natural gas, the biogas. However, although there are possible gains in the energy and environmental aspects, this technology presents difficulties to become viable in Brazilian market. Therefore, this work proposes a new thermodynamic analysis, based on the exergy method, of the potential of vinasse and biogas produced in its anaerobic treatment. In order to accomplish this, the anaerobic digestion of vinasse was modeled with ADM1 (Anaerobic Digestion Model Nº1) and the chemical exergy calculation of this effluent was updated. Thus, the results obtained indicate that the anaerobic treatment can recover a significant part of vinasse exergy (44-52% of 189-1529 kJ/l), depending on the digestible material concentration, as well as the anaerobic reactor operation. It also can be notice that, although anaerobic digestion be more efficient at higher retention times, it is desirable to maximize treated vinasse volume to the detriment of conversion quality. Furthermore, the biogas production yearly performance is also affected by the reactor start-up process and the ethanol production seasonality. On the other hand, the biogas plant promotes higher reductions of exergy destruction in comparison with fertirrigation and vinasse concentration. Possible thermal integrations between the biogas plant and the vinasse concentration plant were proposed and analyzed, reaching better exergy efficiencies and reduced thermal demand. In general, this study demonstrates the exergy method application in organic residues upgrade by biogas production.},
 bibtype = {phdthesis},
 author = {Nakashima, Rafael Nogueira},
 doi = {10.11606/D.3.2018.tde-27082018-153742}
}

@inproceedings{
 title = {Exergy analysis of biogas production in ethanol distilleries},
 type = {inproceedings},
 year = {2017},
 pages = {10},
 issue = {185},
 websites = {http://abcm.org.br/anais-de-eventos/COB17/0185},
 publisher = {ABCM},
 id = {9d55d0b8-f977-3004-9614-0fe31ca504c1},
 created = {2019-04-24T13:19:59.769Z},
 file_attached = {false},
 profile_id = {0975795e-74f9-3538-96df-f91d2a331893},
 last_modified = {2019-10-05T12:27:38.937Z},
 read = {false},
 starred = {false},
 authored = {true},
 confirmed = {true},
 hidden = {false},
 citation_key = {NogueiraNakashima2017},
 private_publication = {false},
 abstract = {Vinasse is the main liquid effluent of ethanol distillation and, when incorrectly disposed, can cause damages in water and soil resources. Since this effluent has a high concentration of organic compounds, anaerobic digestion is a possible solution to reduce vinasse chemical organic demand (COD) while producing biogas, an alternative fuel. However, this technology has some challenges related to biogas economical devaluation and high investments costs, which demands models to analyze this systems performance. Thus, the focus of this study was to develop a biogas production model, combining Matlab® and Aspen Plus®, to evaluate the anaerobic treatment efficiency by using exergy analysis. The results show that a significant quantity of exergy can be partially retrieved (44-52%) from vinasse with biogas production. In general, increases in hydraulic retention times (HRT) and COD concentrations tend to slightly increment anaerobic digestion efficiency, while high sulfates concentrations have the opposite effect. However, the biogas plant exergy efficiency tends to increase at lower HRT due to higher biogas production and lower portion of untreated vinasse. On average, the main sources of irreversibilities are the cooling system (45%) and the anaerobic reactor (48%). Moreover, the biogas plant performance throughout the year is considerably affected by ethanol production seasonality, start-up times and number of reactors.},
 bibtype = {inproceedings},
 author = {Nogueira Nakashima, Rafael and de Oliveira Junior, Silvio},
 doi = {10.26678/ABCM.COBEM2017.COB17-0185},
 booktitle = {Proceedings of the 24th ABCM International Congress of Mechanical Engineering (COBEM 2017)}
}

@inproceedings{
 title = {Integrated anaerobic digestion and gasification processes for upgrade of ethanol biorefinery residues},
 type = {inproceedings},
 year = {2018},
 pages = {11},
 id = {7524b5d9-ea21-388c-a5ba-32c61927daea},
 created = {2019-04-24T13:22:03.502Z},
 file_attached = {false},
 profile_id = {0975795e-74f9-3538-96df-f91d2a331893},
 last_modified = {2019-10-05T12:27:38.955Z},
 read = {false},
 starred = {false},
 authored = {true},
 confirmed = {true},
 hidden = {false},
 private_publication = {false},
 abstract = {The upgrading of the biorefineries residues is a possible way to increase the overall process efficiency while attaining economical revenues from wastes that otherwise would be disposed. In this sense, anaerobic digestion and gasification represent interesting alternatives to convert organic residues into biofuels, electricity or other bioproducts. However, few studies have explored energy integration possibilities between those options or evaluated various final product pathways. Thus, in this work, different scenarios aimed to capitalize the main residues of the sugarcane ethanol industry (vinasse and bagasse) are investigated. In order to calculate the mass, energy and exergy balances, a thermodynamic model is developed in Aspen Plus and connected with the Anaerobic Digestion Model Nº1 (ADM1) in Matlab. Two process layouts combining anaerobic digestion and gasification are proposed for each desired product (methane, hydrogen or power). As a result, the highest exergy efficiency (48%) was obtained for the configuration focused in methane production and using a combined cycle, since it requires fewer resources and reaction steps to feedstock conversion. On the other hand, exergy was primarily destroyed in vinasse disposal, since anaerobic digestion cannot fully convert organic wastes, followed by the bagasse gasifier and utility systems, due to the irreversible reactions occurring at high temperatures. In short, this study points to some improvement opportunities and reinforces the advantages of the waste capitalization concept.},
 bibtype = {inproceedings},
 author = {Nakashima, R. N. and Flórez-Orrego, D. and Oliveira Junior, S.},
 booktitle = {Proceedings of 5th International Conference on Contemporary Problems of Thermal Engineering (CPOTE 2018)}
}

@article{
 title = {Comparative exergy assessment of vinasse disposal alternatives: Concentration, anaerobic digestion and fertirrigation},
 type = {article},
 year = {2020},
 keywords = {Anaerobic digestion,Biogas,Evaporative concentration,Exergy,Vinasse},
 pages = {1969-1978},
 volume = {147},
 websites = {https://linkinghub.elsevier.com/retrieve/pii/S0960148119314661},
 month = {3},
 publisher = {Elsevier Ltd},
 day = {1},
 id = {0deb59b7-7d6b-33bb-988d-e4e83211fe0e},
 created = {2019-10-05T11:57:09.272Z},
 file_attached = {false},
 profile_id = {0975795e-74f9-3538-96df-f91d2a331893},
 last_modified = {2020-10-16T17:48:54.405Z},
 read = {false},
 starred = {false},
 authored = {true},
 confirmed = {true},
 hidden = {false},
 citation_key = {Nakashima2019},
 private_publication = {false},
 abstract = {Vinasse is the main liquid effluent of ethanol distillation and, since it can cause damages in water and soil resources, different solutions have been proposed to correctly dispose this wastewater. The use as fertilizer in sugarcane irrigation, called fertirrigation, is the main alternative practiced in Brazilian distilleries and it can be enhanced with vinasse concentration and/or biogas production by anaerobic digestion (AD). However, few studies have evaluated the performance of those systems and their combination in order to compare and improve the efficiency of vinasse treatment. Thus, an exergy analysis comparing five combinations of fertirrigation, vinasse concentration and anaerobic digestion, including power generation from biogas, was performed using a thermodynamic model and the Anaerobic Digestion Model Nº1 developed in Aspen Plus and Matlab. The highest exergy efficiency of 27.9% was attained for an average distillery with an AD power plant concentrating digested vinasse. This case performed better than others because all vinasse was treated and part of vinasse water exergy was recovered in the concentration process. Furthermore, the heat integration between AD power plant and vinasse concentration increased the exergy efficiency of those processes in 9-23% and reduced steam consumption in 12-25%. For all cases, fertirrigation was the main source of irreversibilities due to the organic substances exergy losses, while anaerobic digestion reduced the total exergy destroyed.},
 bibtype = {article},
 author = {Nakashima, R.N. and de Oliveira Junior, S.},
 doi = {10.1016/j.renene.2019.09.124},
 journal = {Renewable Energy}
}

@inproceedings{
 title = {Exergoeconomic and environmental assessment of production and end use of sugarcane residues derivatives},
 type = {inproceedings},
 year = {2019},
 keywords = {Biomethane,CO 2 emissions,Ethanol,Exergy,Hydrogen},
 id = {c6916c27-431e-34f4-9dc4-55f2822d3384},
 created = {2019-10-05T11:58:11.375Z},
 file_attached = {false},
 profile_id = {0975795e-74f9-3538-96df-f91d2a331893},
 last_modified = {2019-10-05T12:27:39.960Z},
 read = {false},
 starred = {false},
 authored = {true},
 confirmed = {true},
 hidden = {false},
 private_publication = {false},
 abstract = {The upgrade of sugarcane industry residues, such as vinasse and bagasse, has a notably potential for large scale production of biofuels in Brazil. Despite this fact, the biomass conversion into either electricity or biofuels requires various energy intensive processes that may drastically affect its technical and environmental competitiveness against their non-renewable counterparts. Accordingly, the mapping of the generation of the process irreversibility and their associated atmospheric emissions may help, by issuing appropriate mitigation tasks, in the reduction of exergy consumption rates and environmental impact. Therefore, in this paper, a comparative assessment between the total (c t) and non-renewable (c nr) exergy costs and specific CO 2 emissions (c co2) of the electricity, methane and hydrogen produced from sugarcane vinasse and bagasse is presented and compared with the conventional (fossil fuel-based) supply chains. As a result, a strikingly high average renewable to non-renewable ratio (cr cnr) of 15.2 is estimated for the biofuels derived from the waste upgrade plant. However, due to the larger number of process involved in the conversion of biomass resources, the total exergy costs of biofuels delivered vary from 2.6 to 2.2 times higher in comparison to those derived from fossil fuels. On the other hand, although hydrogen production from sugarcane wastes involves more processes, its unit exergy costs in the end-use stage (transportation service) were found to be the lowest among the studied biofuels, partially due to the higher efficiency of hydrogen-fueled transportation technologies. In general, the production of biofuels and electricity from sugarcane wastes can offer fuels with greatly reduced CO 2 specific emissions and low non-renewable energy consumption shares.},
 bibtype = {inproceedings},
 author = {Nakashima, R N and Flórez-Orrego, D and de Oliveira Junior, S},
 booktitle = {Proceedings of 32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2019)}
}

@article{
 title = {Sugarcane bagasse and vinasse conversion to electricity and biofuels: an exergoeconomic and environmental assessment},
 type = {article},
 year = {2020},
 pages = {44},
 volume = {33},
 websites = {http://www.inderscience.com/link.php?id=109623},
 id = {ca13dc44-f080-3b1b-8a4b-90a94911b333},
 created = {2020-10-03T19:34:37.875Z},
 file_attached = {false},
 profile_id = {0975795e-74f9-3538-96df-f91d2a331893},
 last_modified = {2020-10-03T19:34:37.875Z},
 read = {false},
 starred = {false},
 authored = {true},
 confirmed = {false},
 hidden = {false},
 private_publication = {false},
 abstract = {Biomass conversion into either electricity or biofuels requires various energy intensive processes that may drastically affect its technical and environmental competitiveness against their non-renewable counterparts. Therefore, in this paper, a comparative assessment between the total (cT) and non-renewable (cNR) unit exergy costs and specific CO2 emissions (cCO2) of the electricity, methane and hydrogen produced from sugarcane vinasse and bagasse is presented and compared with the conventional (fossil fuel-based) supply chains. As a result, the non-renewable unit exergy costs and specific CO2 emissions for the transportation service in all cases analysed are 3.1 to 4.7 times lower compared with conventional fossil fuels (e.g., diesel, gasoline, natural gas and hydrogen). Among the waste upgrade alternatives, methane production is able to maximise the exergy flow rate of products in the transformation stage (52.4-58.6 MW), while hydrogen and electricity production can substantially increase the transportation service in the end-use stage (51.7-52.1%) and the operational revenues (2,706-2,889 EUR/h).},
 bibtype = {article},
 author = {Nakashima, Rafael Nogueira and Orrego, Daniel Flórez and Velásquez, Hector Ivan and Junior, Silvio De Oliveira},
 doi = {10.1504/IJEX.2020.109623},
 journal = {International Journal of Exergy},
 number = {1}
}

@article{
 title = {Corrigendum to “Comparative exergy assessment of vinasse disposal alternatives: Concentration, anaerobic digestion and fertirrigation” [147, (1), 2020, 1969–1978]},
 type = {article},
 year = {2020},
 pages = {1395},
 volume = {156},
 websites = {https://linkinghub.elsevier.com/retrieve/pii/S0960148120302718},
 month = {8},
 id = {8c51d70b-2060-34aa-9e33-549df3d7ac71},
 created = {2020-10-03T19:38:36.579Z},
 file_attached = {false},
 profile_id = {0975795e-74f9-3538-96df-f91d2a331893},
 last_modified = {2020-10-03T19:38:36.579Z},
 read = {false},
 starred = {false},
 authored = {true},
 confirmed = {false},
 hidden = {false},
 private_publication = {false},
 bibtype = {article},
 author = {Nogueira Nakashima, Rafael and de Oliveira Junior, Silvio},
 doi = {10.1016/j.renene.2020.02.076},
 journal = {Renewable Energy}
}\">\n            <i class=\"fa fa-download fa-fw\"></i> Download BibTeX\n          </a>\n        </li>\n        <li>\n          <a href=\"//bibbase.org/rss?bib=\">\n            <i class=\"fa fa-rss fa-fw\"></i> RSS Feed\n          </a>\n          </li>\n      </ul>\n      </li>\n\n      \n\n\n      \n    </ul>\n\n\n    <div class=\"alert alert-success bibbase_msg\" id=\"bibbase_msg_embed\"\n         style=\"display: none;\">\n\n      Excellent! 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 and de Oliveira Junior,  S.\n</span>\n\n  \n\n</span>\n\n  <i>Renewable Energy</i>, 147: 1969-1978. 3 2020.\n  <span class=\"note\"></span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"https://linkinghub.elsevier.com/retrieve/pii/S0960148119314661\"\n     onclick=\"log_download('nakashima-deoliveirajunior-comparativeexergyassessmentofvinassedisposalalternativesconcentrationanaerobicdigestionandfertirrigation-2020', 'https://linkinghub.elsevier.com/retrieve/pii/S0960148119314661', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"Comparative exergy assessment of vinasse disposal alternatives: Concentration, anaerobic digestion and fertirrigation [link]\"\n       title=\"Website\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Website</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"http://doi.org/10.1016/j.renene.2019.09.124\"\n     onclick=\"log_download('nakashima-deoliveirajunior-comparativeexergyassessmentofvinassedisposalalternativesconcentrationanaerobicdigestionandfertirrigation-2020', 'http://doi.org/10.1016/j.renene.2019.09.124', event.ctrlKey)\"\n     class=\"bibbase doi link\">\n    <span>doi</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/nakashima-deoliveirajunior-comparativeexergyassessmentofvinassedisposalalternativesconcentrationanaerobicdigestionandfertirrigation-2020\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('nakashima-deoliveirajunior-comparativeexergyassessmentofvinassedisposalalternativesconcentrationanaerobicdigestionandfertirrigation-2020')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@article{\n title = {Comparative exergy assessment of vinasse disposal alternatives: Concentration, anaerobic digestion and fertirrigation},\n type = {article},\n year = {2020},\n keywords = {Anaerobic digestion,Biogas,Evaporative concentration,Exergy,Vinasse},\n pages = {1969-1978},\n volume = {147},\n websites = {https://linkinghub.elsevier.com/retrieve/pii/S0960148119314661},\n month = {3},\n publisher = {Elsevier Ltd},\n day = {1},\n id = {0deb59b7-7d6b-33bb-988d-e4e83211fe0e},\n created = {2019-10-05T11:57:09.272Z},\n file_attached = {false},\n profile_id = {0975795e-74f9-3538-96df-f91d2a331893},\n last_modified = {2020-10-16T17:48:54.405Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {true},\n hidden = {false},\n citation_key = {Nakashima2019},\n private_publication = {false},\n abstract = {Vinasse is the main liquid effluent of ethanol distillation and, since it can cause damages in water and soil resources, different solutions have been proposed to correctly dispose this wastewater. The use as fertilizer in sugarcane irrigation, called fertirrigation, is the main alternative practiced in Brazilian distilleries and it can be enhanced with vinasse concentration and/or biogas production by anaerobic digestion (AD). However, few studies have evaluated the performance of those systems and their combination in order to compare and improve the efficiency of vinasse treatment. Thus, an exergy analysis comparing five combinations of fertirrigation, vinasse concentration and anaerobic digestion, including power generation from biogas, was performed using a thermodynamic model and the Anaerobic Digestion Model Nº1 developed in Aspen Plus and Matlab. The highest exergy efficiency of 27.9% was attained for an average distillery with an AD power plant concentrating digested vinasse. This case performed better than others because all vinasse was treated and part of vinasse water exergy was recovered in the concentration process. Furthermore, the heat integration between AD power plant and vinasse concentration increased the exergy efficiency of those processes in 9-23% and reduced steam consumption in 12-25%. For all cases, fertirrigation was the main source of irreversibilities due to the organic substances exergy losses, while anaerobic digestion reduced the total exergy destroyed.},\n bibtype = {article},\n author = {Nakashima, R.N. and de Oliveira Junior, S.},\n doi = {10.1016/j.renene.2019.09.124},\n journal = {Renewable Energy}\n}</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  Vinasse is the main liquid effluent of ethanol distillation and, since it can cause damages in water and soil resources, different solutions have been proposed to correctly dispose this wastewater. The use as fertilizer in sugarcane irrigation, called fertirrigation, is the main alternative practiced in Brazilian distilleries and it can be enhanced with vinasse concentration and/or biogas production by anaerobic digestion (AD). However, few studies have evaluated the performance of those systems and their combination in order to compare and improve the efficiency of vinasse treatment. Thus, an exergy analysis comparing five combinations of fertirrigation, vinasse concentration and anaerobic digestion, including power generation from biogas, was performed using a thermodynamic model and the Anaerobic Digestion Model Nº1 developed in Aspen Plus and Matlab. The highest exergy efficiency of 27.9% was attained for an average distillery with an AD power plant concentrating digested vinasse. This case performed better than others because all vinasse was treated and part of vinasse water exergy was recovered in the concentration process. Furthermore, the heat integration between AD power plant and vinasse concentration increased the exergy efficiency of those processes in 9-23% and reduced steam consumption in 12-25%. For all cases, fertirrigation was the main source of irreversibilities due to the organic substances exergy losses, while anaerobic digestion reduced the total exergy destroyed.\n</div>\n\n\n</div>\n\n\n  <div class=\"bibbase_paper\" id=\"nakashima-orrego-velsquez-junior-sugarcanebagasseandvinasseconversiontoelectricityandbiofuelsanexergoeconomicandenvironmentalassessment-2020\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  <a href=\"http://www.inderscience.com/link.php?id=109623\"\n     onclick=\"return trackOutboundLink('publications', 'click', 'nakashima-orrego-velsquez-junior-sugarcanebagasseandvinasseconversiontoelectricityandbiofuelsanexergoeconomicandenvironmentalassessment-2020', 'http://www.inderscience.com/link.php?id=109623', event);\">\n    Sugarcane bagasse and vinasse conversion to electricity and biofuels: an exergoeconomic and environmental assessment.\n  </a>\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Nakashima,  R., N.; Orrego,  D., F.; Velásquez,  H., I.;  and Junior,  S., D., O.\n</span>\n\n  \n\n</span>\n\n  <i>International Journal of Exergy</i>, 33(1): 44.  2020.\n  <span class=\"note\"></span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"http://www.inderscience.com/link.php?id=109623\"\n     onclick=\"log_download('nakashima-orrego-velsquez-junior-sugarcanebagasseandvinasseconversiontoelectricityandbiofuelsanexergoeconomicandenvironmentalassessment-2020', 'http://www.inderscience.com/link.php?id=109623', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"Sugarcane bagasse and vinasse conversion to electricity and biofuels: an exergoeconomic and environmental assessment [link]\"\n       title=\"Website\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Website</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"http://doi.org/10.1504/IJEX.2020.109623\"\n     onclick=\"log_download('nakashima-orrego-velsquez-junior-sugarcanebagasseandvinasseconversiontoelectricityandbiofuelsanexergoeconomicandenvironmentalassessment-2020', 'http://doi.org/10.1504/IJEX.2020.109623', event.ctrlKey)\"\n     class=\"bibbase doi link\">\n    <span>doi</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/nakashima-orrego-velsquez-junior-sugarcanebagasseandvinasseconversiontoelectricityandbiofuelsanexergoeconomicandenvironmentalassessment-2020\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('nakashima-orrego-velsquez-junior-sugarcanebagasseandvinasseconversiontoelectricityandbiofuelsanexergoeconomicandenvironmentalassessment-2020')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@article{\n title = {Sugarcane bagasse and vinasse conversion to electricity and biofuels: an exergoeconomic and environmental assessment},\n type = {article},\n year = {2020},\n pages = {44},\n volume = {33},\n websites = {http://www.inderscience.com/link.php?id=109623},\n id = {ca13dc44-f080-3b1b-8a4b-90a94911b333},\n created = {2020-10-03T19:34:37.875Z},\n file_attached = {false},\n profile_id = {0975795e-74f9-3538-96df-f91d2a331893},\n last_modified = {2020-10-03T19:34:37.875Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Biomass conversion into either electricity or biofuels requires various energy intensive processes that may drastically affect its technical and environmental competitiveness against their non-renewable counterparts. Therefore, in this paper, a comparative assessment between the total (cT) and non-renewable (cNR) unit exergy costs and specific CO2 emissions (cCO2) of the electricity, methane and hydrogen produced from sugarcane vinasse and bagasse is presented and compared with the conventional (fossil fuel-based) supply chains. As a result, the non-renewable unit exergy costs and specific CO2 emissions for the transportation service in all cases analysed are 3.1 to 4.7 times lower compared with conventional fossil fuels (e.g., diesel, gasoline, natural gas and hydrogen). Among the waste upgrade alternatives, methane production is able to maximise the exergy flow rate of products in the transformation stage (52.4-58.6 MW), while hydrogen and electricity production can substantially increase the transportation service in the end-use stage (51.7-52.1%) and the operational revenues (2,706-2,889 EUR/h).},\n bibtype = {article},\n author = {Nakashima, Rafael Nogueira and Orrego, Daniel Flórez and Velásquez, Hector Ivan and Junior, Silvio De Oliveira},\n doi = {10.1504/IJEX.2020.109623},\n journal = {International Journal of Exergy},\n number = {1}\n}</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  Biomass conversion into either electricity or biofuels requires various energy intensive processes that may drastically affect its technical and environmental competitiveness against their non-renewable counterparts. Therefore, in this paper, a comparative assessment between the total (cT) and non-renewable (cNR) unit exergy costs and specific CO2 emissions (cCO2) of the electricity, methane and hydrogen produced from sugarcane vinasse and bagasse is presented and compared with the conventional (fossil fuel-based) supply chains. As a result, the non-renewable unit exergy costs and specific CO2 emissions for the transportation service in all cases analysed are 3.1 to 4.7 times lower compared with conventional fossil fuels (e.g., diesel, gasoline, natural gas and hydrogen). Among the waste upgrade alternatives, methane production is able to maximise the exergy flow rate of products in the transformation stage (52.4-58.6 MW), while hydrogen and electricity production can substantially increase the transportation service in the end-use stage (51.7-52.1%) and the operational revenues (2,706-2,889 EUR/h).\n</div>\n\n\n</div>\n\n\n  <div class=\"bibbase_paper\" id=\"nogueiranakashima-deoliveirajunior-corrigendumtocomparativeexergyassessmentofvinassedisposalalternativesconcentrationanaerobicdigestionandfertirrigation1471202019691978-2020\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  <a href=\"https://linkinghub.elsevier.com/retrieve/pii/S0960148120302718\"\n     onclick=\"return trackOutboundLink('publications', 'click', 'nogueiranakashima-deoliveirajunior-corrigendumtocomparativeexergyassessmentofvinassedisposalalternativesconcentrationanaerobicdigestionandfertirrigation1471202019691978-2020', 'https://linkinghub.elsevier.com/retrieve/pii/S0960148120302718', event);\">\n    Corrigendum to “Comparative exergy assessment of vinasse disposal alternatives: Concentration, anaerobic digestion and fertirrigation” [147, (1), 2020, 1969–1978].\n  </a>\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Nogueira Nakashima,  R.;  and de Oliveira Junior,  S.\n</span>\n\n  \n\n</span>\n\n  <i>Renewable Energy</i>, 156: 1395. 8 2020.\n  <span class=\"note\"></span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"https://linkinghub.elsevier.com/retrieve/pii/S0960148120302718\"\n     onclick=\"log_download('nogueiranakashima-deoliveirajunior-corrigendumtocomparativeexergyassessmentofvinassedisposalalternativesconcentrationanaerobicdigestionandfertirrigation1471202019691978-2020', 'https://linkinghub.elsevier.com/retrieve/pii/S0960148120302718', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"Corrigendum to “Comparative exergy assessment of vinasse disposal alternatives: Concentration, anaerobic digestion and fertirrigation” [147, (1), 2020, 1969–1978] [link]\"\n       title=\"Website\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Website</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"http://doi.org/10.1016/j.renene.2020.02.076\"\n     onclick=\"log_download('nogueiranakashima-deoliveirajunior-corrigendumtocomparativeexergyassessmentofvinassedisposalalternativesconcentrationanaerobicdigestionandfertirrigation1471202019691978-2020', 'http://doi.org/10.1016/j.renene.2020.02.076', event.ctrlKey)\"\n     class=\"bibbase doi link\">\n    <span>doi</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/nogueiranakashima-deoliveirajunior-corrigendumtocomparativeexergyassessmentofvinassedisposalalternativesconcentrationanaerobicdigestionandfertirrigation1471202019691978-2020\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('nogueiranakashima-deoliveirajunior-corrigendumtocomparativeexergyassessmentofvinassedisposalalternativesconcentrationanaerobicdigestionandfertirrigation1471202019691978-2020')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@article{\n title = {Corrigendum to “Comparative exergy assessment of vinasse disposal alternatives: Concentration, anaerobic digestion and fertirrigation” [147, (1), 2020, 1969–1978]},\n type = {article},\n year = {2020},\n pages = {1395},\n volume = {156},\n websites = {https://linkinghub.elsevier.com/retrieve/pii/S0960148120302718},\n month = {8},\n id = {8c51d70b-2060-34aa-9e33-549df3d7ac71},\n created = {2020-10-03T19:38:36.579Z},\n file_attached = {false},\n profile_id = {0975795e-74f9-3538-96df-f91d2a331893},\n last_modified = {2020-10-03T19:38:36.579Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n bibtype = {article},\n author = {Nogueira Nakashima, Rafael and de Oliveira Junior, Silvio},\n doi = {10.1016/j.renene.2020.02.076},\n journal = {Renewable Energy}\n}</pre>\n</div>\n\n\n\n</div>\n\n\n\n\n\n    </div>\n  </div>\n\n  <div class=\"bibbase_group_whole\" id=\"group_2019\">\n    <div class=\"bibbase_group\"\n      onclick=\"toggleGroup('group_2019')\"\n      onkeypress=\"toggleGroup('group_2019')\"\n      tabindex=\"0\">\n      <i class=\"fa fa-angle-down bibbase_group_head_icon\"></i>&nbsp;\n      <span>2019</span>\n      <span class=\"bibbase_group_count\">\n        \n        (2)\n        \n      </span>\n    </div>\n    <div class=\"bibbase_group_body\">\n      \n  \n  <div class=\"bibbase_paper\" id=\"nakashima-flrezorrego-oliveirajunior-integratedanaerobicdigestionandgasificationprocessesforupgradeofethanolbiorefineryresidues-2019\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  <a href=\"http://papers.itc.pw.edu.pl/index.php/JPT/article/view/1475\"\n     onclick=\"return trackOutboundLink('publications', 'click', 'nakashima-flrezorrego-oliveirajunior-integratedanaerobicdigestionandgasificationprocessesforupgradeofethanolbiorefineryresidues-2019', 'http://papers.itc.pw.edu.pl/index.php/JPT/article/view/1475', event);\">\n    Integrated anaerobic digestion and gasification processes for upgrade of ethanol biorefinery residues.\n  </a>\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Nakashima,  R., N.; Flórez-Orrego,  D.;  and Oliveira Junior,  S.\n</span>\n\n  \n\n</span>\n\n  <i>Journal of Power Technologies</i>, 99(2): 104-114.  2019.\n  <span class=\"note\"></span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"http://papers.itc.pw.edu.pl/index.php/JPT/article/view/1475\"\n     onclick=\"log_download('nakashima-flrezorrego-oliveirajunior-integratedanaerobicdigestionandgasificationprocessesforupgradeofethanolbiorefineryresidues-2019', 'http://papers.itc.pw.edu.pl/index.php/JPT/article/view/1475', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"Integrated anaerobic digestion and gasification processes for upgrade of ethanol biorefinery residues [link]\"\n       title=\"Website\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Website</span></a>\n  &nbsp;\n  \n\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/nakashima-flrezorrego-oliveirajunior-integratedanaerobicdigestionandgasificationprocessesforupgradeofethanolbiorefineryresidues-2019\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('nakashima-flrezorrego-oliveirajunior-integratedanaerobicdigestionandgasificationprocessesforupgradeofethanolbiorefineryresidues-2019')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@article{\n title = {Integrated anaerobic digestion and gasification processes for upgrade of ethanol biorefinery residues},\n type = {article},\n year = {2019},\n keywords = {anaerobic digestion,biogas,energy integration,exergy,gasification},\n pages = {104-114},\n volume = {99},\n websites = {http://papers.itc.pw.edu.pl/index.php/JPT/article/view/1475},\n id = {87b50ca4-1909-3b4a-8c1b-2ec4650f63ae},\n created = {2019-04-24T13:13:43.676Z},\n file_attached = {true},\n profile_id = {0975795e-74f9-3538-96df-f91d2a331893},\n last_modified = {2019-12-02T12:52:57.576Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {true},\n hidden = {false},\n citation_key = {Nakashima2019},\n private_publication = {false},\n abstract = {The upgrading of the biorefineries residues is a possible way to increase the overall process efficiency while attaining economical revenues from wastes that otherwise would be discarded. In this sense, anaerobic digestion and gasification represent interesting alternatives to convert organic residues into biofuels, electricity or other bioproducts. However, few studies have explored energy integration possibilities between those options or evaluated various final product pathways. Thus, in this work, various scenarios aimed at capitalizing the main residues of the sugarcane ethanol industry (vinasse and bagasse) are investigated. Two process layouts combining anaerobic digestion and gasification are proposed for each desired product (methane, hydrogen or power). The highest exergy efficiency (48%) was obtained for the configuration focused on methane production and using a combined cycle, since it requires fewer resources and separation steps to convert feedstock into ex-portable products. On the other hand, exergy was primarily destroyed in vinasse disposal, since a significant fraction of its organic wastes are inert to anaerobic digestion, followed by the bagasse gasifier and utility systems, due to the irreversible reactions occurring in these processes. In short, this study points to some improvement opportunities and reinforces the advantages of the waste capitalization concept.},\n bibtype = {article},\n author = {Nakashima, R N and Flórez-Orrego, D and Oliveira Junior, S},\n journal = {Journal of Power Technologies},\n number = {2}\n}</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  The upgrading of the biorefineries residues is a possible way to increase the overall process efficiency while attaining economical revenues from wastes that otherwise would be discarded. In this sense, anaerobic digestion and gasification represent interesting alternatives to convert organic residues into biofuels, electricity or other bioproducts. However, few studies have explored energy integration possibilities between those options or evaluated various final product pathways. Thus, in this work, various scenarios aimed at capitalizing the main residues of the sugarcane ethanol industry (vinasse and bagasse) are investigated. Two process layouts combining anaerobic digestion and gasification are proposed for each desired product (methane, hydrogen or power). The highest exergy efficiency (48%) was obtained for the configuration focused on methane production and using a combined cycle, since it requires fewer resources and separation steps to convert feedstock into ex-portable products. On the other hand, exergy was primarily destroyed in vinasse disposal, since a significant fraction of its organic wastes are inert to anaerobic digestion, followed by the bagasse gasifier and utility systems, due to the irreversible reactions occurring in these processes. In short, this study points to some improvement opportunities and reinforces the advantages of the waste capitalization concept.\n</div>\n\n\n</div>\n\n\n  <div class=\"bibbase_paper\" id=\"nakashima-flrezorrego-deoliveirajunior-exergoeconomicandenvironmentalassessmentofproductionandenduseofsugarcaneresiduesderivatives-2019\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  Exergoeconomic and environmental assessment of production and end use of sugarcane residues derivatives.\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Nakashima,  R., N.; Flórez-Orrego,  D.;  and de Oliveira Junior,  S.\n</span>\n\n  \n\n</span>\n\n  In <i>Proceedings of 32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2019)</i>,  2019. \n  <span class=\"note\"></span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/nakashima-flrezorrego-deoliveirajunior-exergoeconomicandenvironmentalassessmentofproductionandenduseofsugarcaneresiduesderivatives-2019\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('nakashima-flrezorrego-deoliveirajunior-exergoeconomicandenvironmentalassessmentofproductionandenduseofsugarcaneresiduesderivatives-2019')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@inproceedings{\n title = {Exergoeconomic and environmental assessment of production and end use of sugarcane residues derivatives},\n type = {inproceedings},\n year = {2019},\n keywords = {Biomethane,CO 2 emissions,Ethanol,Exergy,Hydrogen},\n id = {c6916c27-431e-34f4-9dc4-55f2822d3384},\n created = {2019-10-05T11:58:11.375Z},\n file_attached = {false},\n profile_id = {0975795e-74f9-3538-96df-f91d2a331893},\n last_modified = {2019-10-05T12:27:39.960Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {true},\n hidden = {false},\n private_publication = {false},\n abstract = {The upgrade of sugarcane industry residues, such as vinasse and bagasse, has a notably potential for large scale production of biofuels in Brazil. Despite this fact, the biomass conversion into either electricity or biofuels requires various energy intensive processes that may drastically affect its technical and environmental competitiveness against their non-renewable counterparts. Accordingly, the mapping of the generation of the process irreversibility and their associated atmospheric emissions may help, by issuing appropriate mitigation tasks, in the reduction of exergy consumption rates and environmental impact. Therefore, in this paper, a comparative assessment between the total (c t) and non-renewable (c nr) exergy costs and specific CO 2 emissions (c co2) of the electricity, methane and hydrogen produced from sugarcane vinasse and bagasse is presented and compared with the conventional (fossil fuel-based) supply chains. As a result, a strikingly high average renewable to non-renewable ratio (cr cnr) of 15.2 is estimated for the biofuels derived from the waste upgrade plant. However, due to the larger number of process involved in the conversion of biomass resources, the total exergy costs of biofuels delivered vary from 2.6 to 2.2 times higher in comparison to those derived from fossil fuels. On the other hand, although hydrogen production from sugarcane wastes involves more processes, its unit exergy costs in the end-use stage (transportation service) were found to be the lowest among the studied biofuels, partially due to the higher efficiency of hydrogen-fueled transportation technologies. In general, the production of biofuels and electricity from sugarcane wastes can offer fuels with greatly reduced CO 2 specific emissions and low non-renewable energy consumption shares.},\n bibtype = {inproceedings},\n author = {Nakashima, R N and Flórez-Orrego, D and de Oliveira Junior, S},\n booktitle = {Proceedings of 32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2019)}\n}</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  The upgrade of sugarcane industry residues, such as vinasse and bagasse, has a notably potential for large scale production of biofuels in Brazil. Despite this fact, the biomass conversion into either electricity or biofuels requires various energy intensive processes that may drastically affect its technical and environmental competitiveness against their non-renewable counterparts. Accordingly, the mapping of the generation of the process irreversibility and their associated atmospheric emissions may help, by issuing appropriate mitigation tasks, in the reduction of exergy consumption rates and environmental impact. Therefore, in this paper, a comparative assessment between the total (c t) and non-renewable (c nr) exergy costs and specific CO 2 emissions (c co2) of the electricity, methane and hydrogen produced from sugarcane vinasse and bagasse is presented and compared with the conventional (fossil fuel-based) supply chains. As a result, a strikingly high average renewable to non-renewable ratio (cr cnr) of 15.2 is estimated for the biofuels derived from the waste upgrade plant. However, due to the larger number of process involved in the conversion of biomass resources, the total exergy costs of biofuels delivered vary from 2.6 to 2.2 times higher in comparison to those derived from fossil fuels. On the other hand, although hydrogen production from sugarcane wastes involves more processes, its unit exergy costs in the end-use stage (transportation service) were found to be the lowest among the studied biofuels, partially due to the higher efficiency of hydrogen-fueled transportation technologies. In general, the production of biofuels and electricity from sugarcane wastes can offer fuels with greatly reduced CO 2 specific emissions and low non-renewable energy consumption shares.\n</div>\n\n\n</div>\n\n\n\n\n\n    </div>\n  </div>\n\n  <div class=\"bibbase_group_whole\" id=\"group_2018\">\n    <div class=\"bibbase_group\"\n      onclick=\"toggleGroup('group_2018')\"\n      onkeypress=\"toggleGroup('group_2018')\"\n      tabindex=\"0\">\n      <i class=\"fa fa-angle-down bibbase_group_head_icon\"></i>&nbsp;\n      <span>2018</span>\n      <span class=\"bibbase_group_count\">\n        \n        (3)\n        \n      </span>\n    </div>\n    <div class=\"bibbase_group_body\">\n      \n  \n  <div class=\"bibbase_paper\" id=\"nakashima-deoliveira-exergyassessmentofvinassedisposalalternativesconcentrationanaerobicdigestionandfertirrigation-2018\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  Exergy assessment of vinasse disposal alternatives: Concentration, anaerobic digestion and fertirrigation.\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Nakashima,  R.;  and de Oliveira,  S.\n</span>\n\n  \n\n</span>\n\n  In <i>Proceedings of the 31st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2018)</i>,  2018. \n  <span class=\"note\"></span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/nakashima-deoliveira-exergyassessmentofvinassedisposalalternativesconcentrationanaerobicdigestionandfertirrigation-2018\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('nakashima-deoliveira-exergyassessmentofvinassedisposalalternativesconcentrationanaerobicdigestionandfertirrigation-2018')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@inproceedings{\n title = {Exergy assessment of vinasse disposal alternatives: Concentration, anaerobic digestion and fertirrigation},\n type = {inproceedings},\n year = {2018},\n keywords = {Anaerobic digestion,Biogas,Evaporative concentration,Exergy,Vinasse},\n id = {6a47505f-46a4-3b09-9c0e-ee71eb1e9cf5},\n created = {2019-04-24T13:07:47.767Z},\n file_attached = {false},\n profile_id = {0975795e-74f9-3538-96df-f91d2a331893},\n last_modified = {2019-10-05T12:27:38.527Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {true},\n hidden = {false},\n citation_key = {Nakashima2018},\n private_publication = {false},\n abstract = {Vinasse is the main liquid effluent of ethanol distillation and, since it can cause damages in water and soil resources, different solutions have been proposed to correctly dispose this wastewater. The use as fertilizer in sugarcane irrigation, called fertirrigation, is the main alternative practiced in Brazilian distilleries and it can be enhanced with vinasse concentration and/or biogas production by anaerobic digestion (AD). However, few studies have evaluated the performance of those systems and their combination in order to compare and improve the efficiency of vinasse treatment. Thus, an exergy analysis comparing five combinations of fertirrigation, vinasse concentration and anaerobic digestion, including power generation from biogas, was performed using a thermodynamic model and the Anaerobic Digestion Model Nº1 developed in Aspen Plus and Matlab. The highest exergy efficiency of 27.9% was attained for an average distillery with an AD power plant concentrating digested vinasse. This case performed better than others because all vinasse was treated and part of vinasse water exergy was recovered in the concentration process. Furthermore, the heat integration between AD power plant and vinasse concentration increased the exergy efficiency of those processes in 9-23% and reduced steam consumption in 12-25%. For all cases, fertirrigation was the main source of irreversibilities due to the organic substances exergy losses, while anaerobic digestion reduced the total exergy destroyed.},\n bibtype = {inproceedings},\n author = {Nakashima, R.N. and de Oliveira, S.},\n booktitle = {Proceedings of the 31st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2018)}\n}</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  Vinasse is the main liquid effluent of ethanol distillation and, since it can cause damages in water and soil resources, different solutions have been proposed to correctly dispose this wastewater. The use as fertilizer in sugarcane irrigation, called fertirrigation, is the main alternative practiced in Brazilian distilleries and it can be enhanced with vinasse concentration and/or biogas production by anaerobic digestion (AD). However, few studies have evaluated the performance of those systems and their combination in order to compare and improve the efficiency of vinasse treatment. Thus, an exergy analysis comparing five combinations of fertirrigation, vinasse concentration and anaerobic digestion, including power generation from biogas, was performed using a thermodynamic model and the Anaerobic Digestion Model Nº1 developed in Aspen Plus and Matlab. The highest exergy efficiency of 27.9% was attained for an average distillery with an AD power plant concentrating digested vinasse. This case performed better than others because all vinasse was treated and part of vinasse water exergy was recovered in the concentration process. Furthermore, the heat integration between AD power plant and vinasse concentration increased the exergy efficiency of those processes in 9-23% and reduced steam consumption in 12-25%. For all cases, fertirrigation was the main source of irreversibilities due to the organic substances exergy losses, while anaerobic digestion reduced the total exergy destroyed.\n</div>\n\n\n</div>\n\n\n  <div class=\"bibbase_paper\" id=\"nakashima-avaliaoexergticadageraoeusodebiogsnosetorsucroenergtico-2018\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  <a href=\"http://www.teses.usp.br/teses/disponiveis/3/3150/tde-27082018-153742/\"\n     onclick=\"return trackOutboundLink('publications', 'click', 'nakashima-avaliaoexergticadageraoeusodebiogsnosetorsucroenergtico-2018', 'http://www.teses.usp.br/teses/disponiveis/3/3150/tde-27082018-153742/', event);\">\n    Avaliação exergética da geração e uso de biogás no setor sucroenergético.\n  </a>\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Nakashima,  R., N.\n</span>\n\n  \n\n</span>\n\n  Ph.D. Thesis,  2018.\n  <span class=\"note\"></span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"http://www.teses.usp.br/teses/disponiveis/3/3150/tde-27082018-153742/\"\n     onclick=\"log_download('nakashima-avaliaoexergticadageraoeusodebiogsnosetorsucroenergtico-2018', 'http://www.teses.usp.br/teses/disponiveis/3/3150/tde-27082018-153742/', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"Avaliação exergética da geração e uso de biogás no setor sucroenergético. [link]\"\n       title=\"Website\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Website</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"http://doi.org/10.11606/D.3.2018.tde-27082018-153742\"\n     onclick=\"log_download('nakashima-avaliaoexergticadageraoeusodebiogsnosetorsucroenergtico-2018', 'http://doi.org/10.11606/D.3.2018.tde-27082018-153742', event.ctrlKey)\"\n     class=\"bibbase doi link\">\n    <span>doi</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/nakashima-avaliaoexergticadageraoeusodebiogsnosetorsucroenergtico-2018\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('nakashima-avaliaoexergticadageraoeusodebiogsnosetorsucroenergtico-2018')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@phdthesis{\n title = {Avaliação exergética da geração e uso de biogás no setor sucroenergético.},\n type = {phdthesis},\n year = {2018},\n pages = {140},\n websites = {http://www.teses.usp.br/teses/disponiveis/3/3150/tde-27082018-153742/},\n city = {São Paulo},\n institution = {Universidade de São Paulo},\n department = {Escola Politécnica da USP},\n id = {c10a9faf-a7b0-3d57-a790-120b03e79701},\n created = {2019-04-24T13:17:48.305Z},\n file_attached = {false},\n profile_id = {0975795e-74f9-3538-96df-f91d2a331893},\n last_modified = {2019-10-05T12:27:38.500Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {true},\n hidden = {false},\n citation_key = {Nakashima2018b},\n private_publication = {false},\n abstract = {The residue of the first distillation of wine, vinasse, stands outs in the sugarcane ethanol production due to its huge volume and high concentration of organic substances. The anaerobic treatment of this effluent can enhance its physical-chemical characteristics (e. g. pH and COD) in addition to produce an alternative fuel to natural gas, the biogas. However, although there are possible gains in the energy and environmental aspects, this technology presents difficulties to become viable in Brazilian market. Therefore, this work proposes a new thermodynamic analysis, based on the exergy method, of the potential of vinasse and biogas produced in its anaerobic treatment. In order to accomplish this, the anaerobic digestion of vinasse was modeled with ADM1 (Anaerobic Digestion Model Nº1) and the chemical exergy calculation of this effluent was updated. Thus, the results obtained indicate that the anaerobic treatment can recover a significant part of vinasse exergy (44-52% of 189-1529 kJ/l), depending on the digestible material concentration, as well as the anaerobic reactor operation. It also can be notice that, although anaerobic digestion be more efficient at higher retention times, it is desirable to maximize treated vinasse volume to the detriment of conversion quality. Furthermore, the biogas production yearly performance is also affected by the reactor start-up process and the ethanol production seasonality. On the other hand, the biogas plant promotes higher reductions of exergy destruction in comparison with fertirrigation and vinasse concentration. Possible thermal integrations between the biogas plant and the vinasse concentration plant were proposed and analyzed, reaching better exergy efficiencies and reduced thermal demand. In general, this study demonstrates the exergy method application in organic residues upgrade by biogas production.},\n bibtype = {phdthesis},\n author = {Nakashima, Rafael Nogueira},\n doi = {10.11606/D.3.2018.tde-27082018-153742}\n}</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  The residue of the first distillation of wine, vinasse, stands outs in the sugarcane ethanol production due to its huge volume and high concentration of organic substances. The anaerobic treatment of this effluent can enhance its physical-chemical characteristics (e. g. pH and COD) in addition to produce an alternative fuel to natural gas, the biogas. However, although there are possible gains in the energy and environmental aspects, this technology presents difficulties to become viable in Brazilian market. Therefore, this work proposes a new thermodynamic analysis, based on the exergy method, of the potential of vinasse and biogas produced in its anaerobic treatment. In order to accomplish this, the anaerobic digestion of vinasse was modeled with ADM1 (Anaerobic Digestion Model Nº1) and the chemical exergy calculation of this effluent was updated. Thus, the results obtained indicate that the anaerobic treatment can recover a significant part of vinasse exergy (44-52% of 189-1529 kJ/l), depending on the digestible material concentration, as well as the anaerobic reactor operation. It also can be notice that, although anaerobic digestion be more efficient at higher retention times, it is desirable to maximize treated vinasse volume to the detriment of conversion quality. Furthermore, the biogas production yearly performance is also affected by the reactor start-up process and the ethanol production seasonality. On the other hand, the biogas plant promotes higher reductions of exergy destruction in comparison with fertirrigation and vinasse concentration. Possible thermal integrations between the biogas plant and the vinasse concentration plant were proposed and analyzed, reaching better exergy efficiencies and reduced thermal demand. In general, this study demonstrates the exergy method application in organic residues upgrade by biogas production.\n</div>\n\n\n</div>\n\n\n  <div class=\"bibbase_paper\" id=\"nakashima-flrezorrego-oliveirajunior-integratedanaerobicdigestionandgasificationprocessesforupgradeofethanolbiorefineryresidues-2018\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  Integrated anaerobic digestion and gasification processes for upgrade of ethanol biorefinery residues.\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Nakashima,  R., N.; Flórez-Orrego,  D.;  and Oliveira Junior,  S.\n</span>\n\n  \n\n</span>\n\n  In <i>Proceedings of 5th International Conference on Contemporary Problems of Thermal Engineering (CPOTE 2018)</i>, pages 11,  2018. \n  <span class=\"note\"></span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/nakashima-flrezorrego-oliveirajunior-integratedanaerobicdigestionandgasificationprocessesforupgradeofethanolbiorefineryresidues-2018\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('nakashima-flrezorrego-oliveirajunior-integratedanaerobicdigestionandgasificationprocessesforupgradeofethanolbiorefineryresidues-2018')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@inproceedings{\n title = {Integrated anaerobic digestion and gasification processes for upgrade of ethanol biorefinery residues},\n type = {inproceedings},\n year = {2018},\n pages = {11},\n id = {7524b5d9-ea21-388c-a5ba-32c61927daea},\n created = {2019-04-24T13:22:03.502Z},\n file_attached = {false},\n profile_id = {0975795e-74f9-3538-96df-f91d2a331893},\n last_modified = {2019-10-05T12:27:38.955Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {true},\n hidden = {false},\n private_publication = {false},\n abstract = {The upgrading of the biorefineries residues is a possible way to increase the overall process efficiency while attaining economical revenues from wastes that otherwise would be disposed. In this sense, anaerobic digestion and gasification represent interesting alternatives to convert organic residues into biofuels, electricity or other bioproducts. However, few studies have explored energy integration possibilities between those options or evaluated various final product pathways. Thus, in this work, different scenarios aimed to capitalize the main residues of the sugarcane ethanol industry (vinasse and bagasse) are investigated. In order to calculate the mass, energy and exergy balances, a thermodynamic model is developed in Aspen Plus and connected with the Anaerobic Digestion Model Nº1 (ADM1) in Matlab. Two process layouts combining anaerobic digestion and gasification are proposed for each desired product (methane, hydrogen or power). As a result, the highest exergy efficiency (48%) was obtained for the configuration focused in methane production and using a combined cycle, since it requires fewer resources and reaction steps to feedstock conversion. On the other hand, exergy was primarily destroyed in vinasse disposal, since anaerobic digestion cannot fully convert organic wastes, followed by the bagasse gasifier and utility systems, due to the irreversible reactions occurring at high temperatures. In short, this study points to some improvement opportunities and reinforces the advantages of the waste capitalization concept.},\n bibtype = {inproceedings},\n author = {Nakashima, R. N. and Flórez-Orrego, D. and Oliveira Junior, S.},\n booktitle = {Proceedings of 5th International Conference on Contemporary Problems of Thermal Engineering (CPOTE 2018)}\n}</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  The upgrading of the biorefineries residues is a possible way to increase the overall process efficiency while attaining economical revenues from wastes that otherwise would be disposed. In this sense, anaerobic digestion and gasification represent interesting alternatives to convert organic residues into biofuels, electricity or other bioproducts. However, few studies have explored energy integration possibilities between those options or evaluated various final product pathways. Thus, in this work, different scenarios aimed to capitalize the main residues of the sugarcane ethanol industry (vinasse and bagasse) are investigated. In order to calculate the mass, energy and exergy balances, a thermodynamic model is developed in Aspen Plus and connected with the Anaerobic Digestion Model Nº1 (ADM1) in Matlab. Two process layouts combining anaerobic digestion and gasification are proposed for each desired product (methane, hydrogen or power). As a result, the highest exergy efficiency (48%) was obtained for the configuration focused in methane production and using a combined cycle, since it requires fewer resources and reaction steps to feedstock conversion. On the other hand, exergy was primarily destroyed in vinasse disposal, since anaerobic digestion cannot fully convert organic wastes, followed by the bagasse gasifier and utility systems, due to the irreversible reactions occurring at high temperatures. In short, this study points to some improvement opportunities and reinforces the advantages of the waste capitalization concept.\n</div>\n\n\n</div>\n\n\n\n\n\n    </div>\n  </div>\n\n  <div class=\"bibbase_group_whole\" id=\"group_2017\">\n    <div class=\"bibbase_group\"\n      onclick=\"toggleGroup('group_2017')\"\n      onkeypress=\"toggleGroup('group_2017')\"\n      tabindex=\"0\">\n      <i class=\"fa fa-angle-down bibbase_group_head_icon\"></i>&nbsp;\n      <span>2017</span>\n      <span class=\"bibbase_group_count\">\n        \n        (1)\n        \n      </span>\n    </div>\n    <div class=\"bibbase_group_body\">\n      \n  \n  <div class=\"bibbase_paper\" id=\"nogueiranakashima-deoliveirajunior-exergyanalysisofbiogasproductioninethanoldistilleries-2017\">\n  <span class=\"bibbase_paper_titleauthoryear\">\n\n  \n  <span class=\"bibbase_paper_title\">\n  \n  \n  \n  <a href=\"http://abcm.org.br/anais-de-eventos/COB17/0185\"\n     onclick=\"return trackOutboundLink('publications', 'click', 'nogueiranakashima-deoliveirajunior-exergyanalysisofbiogasproductioninethanoldistilleries-2017', 'http://abcm.org.br/anais-de-eventos/COB17/0185', event);\">\n    Exergy analysis of biogas production in ethanol distilleries.\n  </a>\n  \n  \n  \n</span>\n\n  <span class=\"bibbase_paper_author\">\n  Nogueira Nakashima,  R.;  and de Oliveira Junior,  S.\n</span>\n\n  \n\n</span>\n\n  In <i>Proceedings of the 24th ABCM International Congress of Mechanical Engineering (COBEM 2017)</i>, pages 10,  2017. ABCM\n  <span class=\"note\"></span>\n\n<span class=\"bibbase_note\"></span>\n\n<br class=\"bibbase_paper_content\"/>\n\n<span class=\"bibbase_paper_content dontprint\">\n\n  \n  <a href=\"http://abcm.org.br/anais-de-eventos/COB17/0185\"\n     onclick=\"log_download('nogueiranakashima-deoliveirajunior-exergyanalysisofbiogasproductioninethanoldistilleries-2017', 'http://abcm.org.br/anais-de-eventos/COB17/0185', event.ctrlKey, event)\">\n    <img src=\"//bibbase.org/img/filetypes/link.svg\"\n\t     alt=\"Exergy analysis of biogas production in ethanol distilleries [link]\"\n       title=\"Website\"\n\t     class=\"bibbase_icon\"\n         ><span class=\"bibbase_icon_text\">Website</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"http://doi.org/10.26678/ABCM.COBEM2017.COB17-0185\"\n     onclick=\"log_download('nogueiranakashima-deoliveirajunior-exergyanalysisofbiogasproductioninethanoldistilleries-2017', 'http://doi.org/10.26678/ABCM.COBEM2017.COB17-0185', event.ctrlKey)\"\n     class=\"bibbase doi link\">\n    <span>doi</span></a>\n  &nbsp;\n  \n\n  \n  <a href=\"//bibbase.org/network/publication/nogueiranakashima-deoliveirajunior-exergyanalysisofbiogasproductioninethanoldistilleries-2017\"\n     class=\"bibbase bibbase_page link\">link</a>\n  &nbsp;\n  \n\n  <a href=\"#\"\n     onclick=\"showBib(event); return false;\"\n     class=\"bibbase bibtex link\">bibtex\n    <i class=\"fa fa-caret-down\"></i></a>\n\n  \n  &nbsp;\n  <a class=\"bibbase_abstract_link bibbase link\"\n     href=\"#\"\n     onclick=\"showAbstract(event); return false;\">\n    abstract <i class=\"fa fa-caret-down\"></i></a>\n  \n\n  \n\n  <!-- <a class=\"bibbase read link hidden\" -->\n  <!--    href=\"javascript:toggleRead('nogueiranakashima-deoliveirajunior-exergyanalysisofbiogasproductioninethanoldistilleries-2017')\" -->\n  <!--    title=\"Marking this paper as read adds it to your library on BibBase.\" -->\n  <!--    > -->\n  <!--   <i class=\"fa fa-check\"></i>&nbsp; -->\n  <!--   <span>mark as read</span> -->\n  <!-- </a> -->\n\n  &nbsp;\n  \n  \n\n</span>\n\n<div class=\"well well-small bibbase\" data-type=\"bibtex\"\n     style=\"display:none\">\n  <pre style=\"white-space: pre-wrap;\">@inproceedings{\n title = {Exergy analysis of biogas production in ethanol distilleries},\n type = {inproceedings},\n year = {2017},\n pages = {10},\n issue = {185},\n websites = {http://abcm.org.br/anais-de-eventos/COB17/0185},\n publisher = {ABCM},\n id = {9d55d0b8-f977-3004-9614-0fe31ca504c1},\n created = {2019-04-24T13:19:59.769Z},\n file_attached = {false},\n profile_id = {0975795e-74f9-3538-96df-f91d2a331893},\n last_modified = {2019-10-05T12:27:38.937Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {true},\n hidden = {false},\n citation_key = {NogueiraNakashima2017},\n private_publication = {false},\n abstract = {Vinasse is the main liquid effluent of ethanol distillation and, when incorrectly disposed, can cause damages in water and soil resources. Since this effluent has a high concentration of organic compounds, anaerobic digestion is a possible solution to reduce vinasse chemical organic demand (COD) while producing biogas, an alternative fuel. However, this technology has some challenges related to biogas economical devaluation and high investments costs, which demands models to analyze this systems performance. Thus, the focus of this study was to develop a biogas production model, combining Matlab® and Aspen Plus®, to evaluate the anaerobic treatment efficiency by using exergy analysis. The results show that a significant quantity of exergy can be partially retrieved (44-52%) from vinasse with biogas production. In general, increases in hydraulic retention times (HRT) and COD concentrations tend to slightly increment anaerobic digestion efficiency, while high sulfates concentrations have the opposite effect. However, the biogas plant exergy efficiency tends to increase at lower HRT due to higher biogas production and lower portion of untreated vinasse. On average, the main sources of irreversibilities are the cooling system (45%) and the anaerobic reactor (48%). Moreover, the biogas plant performance throughout the year is considerably affected by ethanol production seasonality, start-up times and number of reactors.},\n bibtype = {inproceedings},\n author = {Nogueira Nakashima, Rafael and de Oliveira Junior, Silvio},\n doi = {10.26678/ABCM.COBEM2017.COB17-0185},\n booktitle = {Proceedings of the 24th ABCM International Congress of Mechanical Engineering (COBEM 2017)}\n}</pre>\n</div>\n\n\n<div class=\"well well-small bibbase\" data-type=\"abstract\"\n     style=\"display:none\">\n  Vinasse is the main liquid effluent of ethanol distillation and, when incorrectly disposed, can cause damages in water and soil resources. Since this effluent has a high concentration of organic compounds, anaerobic digestion is a possible solution to reduce vinasse chemical organic demand (COD) while producing biogas, an alternative fuel. However, this technology has some challenges related to biogas economical devaluation and high investments costs, which demands models to analyze this systems performance. Thus, the focus of this study was to develop a biogas production model, combining Matlab® and Aspen Plus®, to evaluate the anaerobic treatment efficiency by using exergy analysis. The results show that a significant quantity of exergy can be partially retrieved (44-52%) from vinasse with biogas production. In general, increases in hydraulic retention times (HRT) and COD concentrations tend to slightly increment anaerobic digestion efficiency, while high sulfates concentrations have the opposite effect. However, the biogas plant exergy efficiency tends to increase at lower HRT due to higher biogas production and lower portion of untreated vinasse. On average, the main sources of irreversibilities are the cooling system (45%) and the anaerobic reactor (48%). Moreover, the biogas plant performance throughout the year is considerably affected by ethanol production seasonality, start-up times and number of reactors.\n</div>\n\n\n</div>\n\n\n\n\n\n    </div>\n  </div>\n\n\n\n\n  </div>\n\n\n  <!-- Modal -->\n\n  <!-- <iframe id=\"bibbase_network_frame\" -->\n  <!--         src=\"//bibbase.org/network/control\" -->\n  <!--         style=\"display: none;\"> -->\n  <!-- </iframe> -->\n\n</div>\n"}; document.write(bibbase_data.data);