Degradation of carbaryl by UV/chlorine process: Optimal degradation conditions, reaction intermediates, and mechanisms

被引:0
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作者
Choi, Ayoung [1 ]
Kim, Jungyeon [1 ]
Lee, Haesung [1 ]
Kim, Minhee [2 ]
Niu, Xi-Zhi [3 ]
Mezgebe, Bineyam [4 ]
Nadagouda, Mallikarjuna N. [5 ]
Al-Anazi, Abdulaziz [6 ]
Han, Changseok [1 ,7 ]
机构
[1] Program in Environmental and Polymer Engineering, of INHA University, 100 Inha-ro, Michuhol-gu, Incheon,22212, Korea, Republic of
[2] Ministry of Environment, 229 Misagangbyeonhangang-ro, Hanam-si, Gyeonggi-do,12902, Korea, Republic of
[3] Environmental Engineering Program, Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati,OH,45221, United States
[4] Center for Environmental solutions and Emergency Response, U.S. Environmental Protection Agency, 919 Kerr Research Drive, Ada,OK,74820, United States
[5] Center for Environmental Solutions and Emergency Response, U.S. Environmental Protection Agency, 26 West Martin Luther King Drive, Cincinnati,OH,45268, United States
[6] Department of Chemical Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh,11421, Saudi Arabia
[7] Department of Environmental Engineering, INHA University, 100 Inha-ro, Michuhol-gu, Incheon,22212, Korea, Republic of
关键词
Alkalinity; -; Chlorination;
D O I
10.1016/j.cej.2025.161678
中图分类号
学科分类号
摘要
Carbaryl, a widely used carbamate insecticide, is toxic to various organisms and humans, persisting in the water cycle despite its relatively rapid environmental degradation. This study thoroughly investigates carbaryl degradation using UV/chlorine treatment, aiming to identify optimal degradation conditions and understand reaction mechanisms. The effects of oxidant concentration, solution pH values, natural organic matter (NOM), and alkalinity on carbaryl degradation by UV/chlorine were examined. The UV/chlorine treatment exhibited significantly enhanced carbaryl degradation compared to UV treatment alone or dark chlorination (i.e., chlorination without UV). Carbaryl was effectively decomposed below pH 7.0 ( © 2025
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