Remediation performance of different enhanced Fe(II)-based advanced oxidation processes on groundwater contaminated by multiple mixed chlorinated hydrocarbons: Removal efficiencies, costs, and optimal systems
Remediation performance of different enhanced Fe(II)-based advanced oxidation processes on groundwater contaminated by multiple mixed chlorinated hydrocarbons: Removal efficiencies, costs, and optimal systems
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不同强化Fe(II)基高级氧化工艺对多种混合氯代烃污染地下水的修复性能：去除效率、成本和最佳系统
DOI：
10.1016/j.cej.2023.147670
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发表时间：
2023-11
影响因子：
15.1
通讯作者：
Zhengyuan Zhou;M. Habib;Zhiqiang Xu;Guilu Zeng;Rumin Yang;Qian Sui;Shuguang Lyu
中科院分区：
文献类型：
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作者：
Zhengyuan Zhou;M. Habib;Zhiqiang Xu;Guilu Zeng;Rumin Yang;Qian Sui;Shuguang Lyu
传统的基于Fe（II）的高级氧化工艺需要增强以实现期望的污染物去除。本研究将引入的促进剂分为四类：有机酸类促进剂、无机还原剂、缓释铁物质和短链醇或酸。选择氯代烃（CHCs）作为目标，并分为三组：氯代烯烃，非全氯代烷烃，全氯代烷烃。系统考察了不同强化体系（氧化剂/Fe（II）/强化剂）对不同类型CHCs的修复效果。确定并阐明了主要的活性物种，以提供最适用于每种氯化烃补救的技术。同时考察了它们的脱氯性能和矿化度。同时，综合考虑强化剂的修复效率、成本和毒性，形成了一套完整的地下水中多种CHCs混合污染的修复策略，为实际应用中CHCs的系统治理提供了借鉴。
Conventional Fe(II)-based advanced oxidation processes required enhancement to achieve desired contaminant removal. In this study, the introduced enhancers were divided into four categories: organic acids-based enhancers, inorganic reductants, slow-release iron substances, and short-chain alcohols or acids. Chlorinated hydrocarbons (CHCs) were chosen as the targets and classified into three groups: chlorinated olefins, non-perchlorinated alkanes, and perchlorinated alkanes. The remediation effects of different enhanced systems (oxidant/Fe(II)/enhancer) on different types of CHCs were systematically examined. The predominant reactive species were identified and elucidated to provide the most applicable technique for the remediation of each type of chlorinated hydrocarbon. Their dechlorination and mineralization degree were investigated as well. Meanwhile, a complete set of remediation strategies for multiple mixed CHCs in contaminated groundwater were formed by combining the remediation efficiencies, costs, and toxicity of the enhancers, which could provide far-reaching implications for the systemic governance of CHCs in practical applications.