On-line sensor monitoring for chemical contaminant attenuation during UV/H<inf>2</inf>O<inf>2</inf> advanced oxidation process. Yu, H., Anumol, T., Park, M., Pepper, I., Scheideler, J., & Snyder, S. Water Research, 2015.
abstract   bibtex   
© 2015 Elsevier Ltd. A combination of surrogate parameters and indicator compounds were measured to predict the removal efficiency of trace organic compounds (TOrCs) using low pressure (LP)-UV/H < inf > 2 < /inf > O < inf > 2 < /inf > advanced oxidation process (AOP), engaged with online sensor-based monitoring system. Thirty-nine TOrCs were evaluated in two distinct secondary wastewater effluents in terms of estimated photochemica l reactivity, as a function of the rate constants of UV direct photolysis (k < inf > UV < /inf > ) and hydroxyl radical (OH) oxidation (k < inf > OH < /inf > ). The selected eighteen TOrCs were classified into three groups that served as indicator compounds: Group 1 for photo-susceptible TOrCs but with minor degradation by OH oxidation (diclofenac, fluoxetine, iohexol, iopamidol, iopromide, simazine and sulfamethoxazole); Group 2 for TOrCs susceptible to both direct photolysis and OH oxidation (benzotriazole, diphenhydramine, ibuprofen, naproxen and sucralose); and Group 3 for photo-resistant TOrCs showing dominant degradation by OH oxidation (atenolol, carbamazepine, DEET, gemfibrozil, primidone and trimethoprim). The results indicate that TOC (optical-based measurement), UVA < inf > 254 < /inf > or UVT < inf > 254 < /inf > (UV absorbance or transmittance at 254 nm), and total fluorescence can all be used as suitable on-line organic surrogate parameters to predict the attenuation of TOrCs. Furthermore, the automated real-time monitoring via on-line surrogate sensors and equipped with the developed degradation profiles between sensor response and a group of TOrCs removal can provide a diagnostic tool for process control during advanced treatment of reclaimed waters.
@article{
 title = {On-line sensor monitoring for chemical contaminant attenuation during UV/H&lt;inf&gt;2&lt;/inf&gt;O&lt;inf&gt;2&lt;/inf&gt; advanced oxidation process},
 type = {article},
 year = {2015},
 identifiers = {[object Object]},
 keywords = {Indicator,On-line sensor,Surrogate,Trace organic compound (TOrC),UV/H&lt;inf&gt;2&lt;/inf&gt;O&lt;inf&gt;2&lt;/inf&,Water reuse},
 volume = {81},
 id = {b7a4817f-cac3-3e0a-8d8f-20ea62638d6f},
 created = {2017-12-11T05:17:48.221Z},
 file_attached = {false},
 profile_id = {33d5abcf-7d5a-34e9-923d-8fe1375aac5a},
 last_modified = {2017-12-11T05:17:48.221Z},
 read = {false},
 starred = {false},
 authored = {true},
 confirmed = {false},
 hidden = {false},
 private_publication = {false},
 abstract = {© 2015 Elsevier Ltd. A combination of surrogate parameters and indicator compounds were measured to predict the removal efficiency of trace organic compounds (TOrCs) using low pressure (LP)-UV/H < inf > 2 < /inf > O < inf > 2 < /inf >  advanced oxidation process (AOP), engaged with online sensor-based monitoring system. Thirty-nine TOrCs were evaluated in two distinct secondary wastewater effluents in terms of estimated photochemica l reactivity, as a function of the rate constants of UV direct photolysis (k < inf > UV < /inf > ) and hydroxyl radical (OH) oxidation (k < inf > OH < /inf > ). The selected eighteen TOrCs were classified into three groups that served as indicator compounds: Group 1 for photo-susceptible TOrCs but with minor degradation by OH oxidation (diclofenac, fluoxetine, iohexol, iopamidol, iopromide, simazine and sulfamethoxazole); Group 2 for TOrCs susceptible to both direct photolysis and OH oxidation (benzotriazole, diphenhydramine, ibuprofen, naproxen and sucralose); and Group 3 for photo-resistant TOrCs showing dominant degradation by OH oxidation (atenolol, carbamazepine, DEET, gemfibrozil, primidone and trimethoprim). The results indicate that TOC (optical-based measurement), UVA < inf > 254 < /inf >  or UVT < inf > 254 < /inf >  (UV absorbance or transmittance at 254 nm), and total fluorescence can all be used as suitable on-line organic surrogate parameters to predict the attenuation of TOrCs. Furthermore, the automated real-time monitoring via on-line surrogate sensors and equipped with the developed degradation profiles between sensor response and a group of TOrCs removal can provide a diagnostic tool for process control during advanced treatment of reclaimed waters.},
 bibtype = {article},
 author = {Yu, H.-W. and Anumol, T. and Park, M. and Pepper, I. and Scheideler, J. and Snyder, S.A.},
 journal = {Water Research}
}

Downloads: 0