A Review Study on Sulfate-Radical-Based Advanced Oxidation Processes for Domestic/Industrial Wastewater Treatment: Degradation, Efficiency, and Mechanism

High levels of toxic organic pollutants commonly detected during domestic/industrial wastewater treatment have been attracting research attention globally because they seriously threaten human health. Sulfate-radical-based advanced oxidation processes (SR-AOPs) have been successfully used in wastewa...

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Published inFrontiers in chemistry Vol. 8; p. 592056
Main Authors Xia, Xinhui, Zhu, Fengyi, Li, Jianju, Yang, Haizhou, Wei, Liangliang, Li, Qiaoyang, Jiang, Junqiu, Zhang, Guangshan, Zhao, Qingliang
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Media S.A 27.11.2020
Subjects
activation approaches
Chemistry
degradation kinetics
reaction mechanisms
sulfate-radicals
wastewater
reaction mechanisms
sulfate-radicals
wastewater
activation approaches
degradation kinetics
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Summary:High levels of toxic organic pollutants commonly detected during domestic/industrial wastewater treatment have been attracting research attention globally because they seriously threaten human health. Sulfate-radical-based advanced oxidation processes (SR-AOPs) have been successfully used in wastewater treatment, such as that containing antibiotics, pesticides, and persistent organic pollutants, for refractory contaminant degradation. This review summarizes activation methods, including physical, chemical, and other coupling approaches, for efficient generation of sulfate radicals and evaluates their applications and economic feasibility. The degradation behavior as well as the efficiency of the generated sulfate radicals of typical domestic and industrial wastewater treatment is investigated. The categories and characteristics of the intermediates are also evaluated. The role of sulfate radicals, their kinetic characteristics, and possible mechanisms for organic elimination are assessed. In the last section, current difficulties and future perspectives of SR-AOPs for wastewater treatment are summarized.
Bibliography:Reviewed by: Nito Angelo Debacher, Federal University of Santa Catarina, Brazil; Taner Yonar, Uludağ University, Turkey
Edited by: Marc Pera-Titus, Fudan University, China
This article was submitted to Green and Sustainable Chemistry, a section of the journal Frontiers in Chemistry
ISSN:2296-2646
2296-2646
DOI:10.3389/fchem.2020.592056