Improvement in the physicochemical characteristics of biochar derived from solid digestate of food waste with different moisture contents. Wang, N., Chen, Q., Zhang, C., Dong, Z., & Xu, Q. Science of The Total Environment, 819:153100, May, 2022. ![Improvement in the physicochemical characteristics of biochar derived from solid digestate of food waste with different moisture contents [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex The management of digestate from food waste (DFW) has become a worldwide challenge. Pyrolysis is a promising technology to generate biochar from the DFW. However, unlike other biomass, DFW usually has high salt and moisture content, which affects the properties of biochar generated from pyrolysis. The characteristics of biochar derived from DFW with different MCs (5%, 20%, 40%, and 60%) were investigated in the present study. It was found that more micropore and mesopore structures were generated in the biochar with the increase of MC from 5% to 60%, resulting in the Brunauer–Emmett–Teller surface area of the biochar increased from 89.23 m2 g−1 to 117.75 m2 g−1. The MC could also promote the variation of oxygen-containing functional groups and the generation of amorphous carbon structures, which are beneficial for the adsorption property of the biochar. Pyrolysis could stabilize the metals in the biochar, while MC has little effect on the metal speciations. These results provide fundamental information on the impact of MC on the properties of biochar derived from DFW and are important for the optimization of the pre-drying process.
@article{wang_improvement_2022,
title = {Improvement in the physicochemical characteristics of biochar derived from solid digestate of food waste with different moisture contents},
volume = {819},
issn = {00489697},
url = {https://linkinghub.elsevier.com/retrieve/pii/S0048969722001905},
doi = {10.1016/j.scitotenv.2022.153100},
abstract = {The management of digestate from food waste (DFW) has become a worldwide challenge. Pyrolysis is a promising technology to generate biochar from the DFW. However, unlike other biomass, DFW usually has high salt and moisture content, which affects the properties of biochar generated from pyrolysis. The characteristics of biochar derived from DFW with different MCs (5\%, 20\%, 40\%, and 60\%) were investigated in the present study. It was found that more micropore and mesopore structures were generated in the biochar with the increase of MC from 5\% to 60\%, resulting in the Brunauer–Emmett–Teller surface area of the biochar increased from 89.23 m2 g−1 to 117.75 m2 g−1. The MC could also promote the variation of oxygen-containing functional groups and the generation of amorphous carbon structures, which are beneficial for the adsorption property of the biochar. Pyrolysis could stabilize the metals in the biochar, while MC has little effect on the metal speciations. These results provide fundamental information on the impact of MC on the properties of biochar derived from DFW and are important for the optimization of the pre-drying process.},
language = {en},
urldate = {2022-04-11},
journal = {Science of The Total Environment},
author = {Wang, Ning and Chen, Qindong and Zhang, Chao and Dong, Zihang and Xu, Qiyong},
month = may,
year = {2022},
keywords = {biochar, characterization, physicochemical, pyrolysis},
pages = {153100},
}
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The characteristics of biochar derived from DFW with different MCs (5%, 20%, 40%, and 60%) were investigated in the present study. It was found that more micropore and mesopore structures were generated in the biochar with the increase of MC from 5% to 60%, resulting in the Brunauer–Emmett–Teller surface area of the biochar increased from 89.23 m2 g−1 to 117.75 m2 g−1. The MC could also promote the variation of oxygen-containing functional groups and the generation of amorphous carbon structures, which are beneficial for the adsorption property of the biochar. Pyrolysis could stabilize the metals in the biochar, while MC has little effect on the metal speciations. 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Pyrolysis is a promising technology to generate biochar from the DFW. However, unlike other biomass, DFW usually has high salt and moisture content, which affects the properties of biochar generated from pyrolysis. The characteristics of biochar derived from DFW with different MCs (5\\%, 20\\%, 40\\%, and 60\\%) were investigated in the present study. It was found that more micropore and mesopore structures were generated in the biochar with the increase of MC from 5\\% to 60\\%, resulting in the Brunauer–Emmett–Teller surface area of the biochar increased from 89.23 m2 g−1 to 117.75 m2 g−1. The MC could also promote the variation of oxygen-containing functional groups and the generation of amorphous carbon structures, which are beneficial for the adsorption property of the biochar. Pyrolysis could stabilize the metals in the biochar, while MC has little effect on the metal speciations. 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