益达胺
降级(电信)
废水
杀虫剂
环境化学
化学
环境科学
环境工程
工程类
电信
农学
生物
作者
Jia-Zih Wang,Thi-Hanh Ha,Chart Chiemchaisri,Ming‐Chun Lu
标识
DOI:10.1016/j.jwpe.2024.105504
摘要
Imidacloprid (IMI) is a global concern due to its wide distribution, persistence, high toxicity, and limited efficacy in conventional treatment methods. Conventional Fenton (CF) techniques have garnered attention for their effectiveness and eco-friendliness in degrading IMD. However, the CF process is hindered by prolonged treatment times and substantial sludge generation. This study investigates the removal efficiency of IMD from its commercial formulation using a combination of electro-Fenton (EF) and CF processes. The CF-EF process emerges as superior to EF alone, achieving 80 % IMD removal in 80 min and 68.6 % COD removal in 50 min of electrolysis, with a Mineralization Current Efficiency (MCE%) of 1.1 %. The degradation of IMD primarily involves hydroxyl (OH), singlet oxygen (O21), and superoxide (O2−) radicals, with OH radicals being predominant. These findings underscore CF-EF as a process intensification strategy that enhances the performance and competitiveness of conventional Fenton by increasing the availability of iron catalyst while reducing sludge production.
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