化学
甲草胺
乙草胺
激进的
异丙甲草胺
过氧化氢
降级(电信)
环境化学
光化学
杀虫剂
有机化学
阿特拉津
农学
计算机科学
电信
生物
作者
Youri Yang,Sunil Ghatge,Yongseok Ko,Younggun Yoon,Jae-Hyung Ahn,Jeong Jun Kim,Hor‐Gil Hur
出处
期刊:Chemosphere
[Elsevier]
日期:2022-04-01
卷期号:292: 133417-133417
被引量:10
标识
DOI:10.1016/j.chemosphere.2021.133417
摘要
Bio-Fenton reaction supported by glucose oxidase (GOx) for producing H2O2 was applied to degrade persistent chloroacetanilide herbicides in the presence of Fe (Ⅲ)-citrate at pH 5.5. There were pH decrease to 4.3, the production of 8 mM H2O2 and simultaneous consumption to produce •OH radicals which non-specifically degraded the herbicides. The degradation rates followed the order acetochlor ≈ alachlor ≈ metolachlor > propachlor ≈ butachlor with the degradation percent of 72.8%, 73.4%, 74.0%, 47.4%, and 43.8%, respectively. During the Bio-Fenton degradation, alachlor was dechlorinated and filtered into catechol via the production of intermediates formed through a series of hydrogen atom abstraction and hydrogen oxide radical addition reactions. The current Bio-Fenton reaction leading to the production of •OH radicals could be applied for non-specific oxidative degradation to various persistent organic pollutants under in-situ environmental conditions, considering diverse microbial metabolic systems able to continuously supply H2O2 with ubiquitous Fe(II) and Fe(III) and citrate.
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