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Different activation methods in sulfate radical-based oxidation for organic pollutants degradation: Catalytic mechanism and toxicity assessment of degradation intermediates
Wang, Wenqi1,3; Chen, Ming1,2,3; Wang, Dongbo1,3; Yan, Ming1,3; Liu, Zhifeng1,3
2021-06-10
摘要With the continuous development of industrialization, a growing number of refractory organic pollutants are released into the environment. These contaminants could cause serious risks to the human health and wildlife, therefore their degradation and mineralization is very critical and urgent. Recently sulfate radical-based advanced oxidation technology has been widely applied to organic pollutants treatment due to its high efficiency and eco-friendly nature. This review comprehensively summarizes different methods for persulfate (PS) and per-oxymonosulfate (PMS) activation including ultraviolet light, ultrasonic, electrochemical, heat, radiation and alkali. The reactive oxygen species identification and mechanisms of PS/PMS activation by different approaches are discussed. In addition, this paper summarized the toxicity of degradation intermediates through bioassays and Ecological Structure Activity Relationships (ECOSAR) program prediction and the formation of toxic bromated disinfection byproducts (Br-DBPs) and carcinogenic bromate (BrO3-) in the presence of Br-. The detoxification and mineralization of target pollutants induced by different reactive oxygen species are also analyzed. Finally, perspectives of potential future research and applications on sulfate radical-based advanced oxidation technology in the treatment of organic pollutants are proposed. (C) 2021 Elsevier B.V. All rights reserved.
关键词Sulfate radical-based advanced oxidation Organic pollutants Mechanism Toxicity Mineralization Degradation intermediates
DOI10.1016/j.scitotenv.2021.145522
发表期刊SCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
卷号772页码:18
通讯作者Chen, Ming(mchensn@hnu.edu.cn)
收录类别SCI
WOS记录号WOS:000628753700118
语种英语