Remediation of persistent organic pollutants in aqueous systems by electrochemical activation of persulfates: A review

Sulfate-radical-based advanced oxidation processes (SR-AOPs) have been widely applied in environmental remediation during the past decade, especially in the degradation of refractory organic contaminants. The electrochemical method, which is considered as one of the most efficient ways to generate s...

Full description

Saved in:
Bibliographic Details
Published in:Journal of environmental management 2020-04, Vol.260, p.110125, Article 110125
Main Authors: Zhi, Dan, Lin, Yinghui, Jiang, Li, Zhou, Yaoyu, Huang, Anqi, Yang, Jian, Luo, Lin
Format: Article
Language:English
Subjects:
Electrochemical activation
Environmental Pollutants
Environmental remediation
Environmental Restoration and Remediation
Influencing factors
Mechanisms
Oxidation-Reduction
Persulfates
Practical application
Sulfates
Water
Water Pollutants, Chemical
Water Purification
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Sulfate-radical-based advanced oxidation processes (SR-AOPs) have been widely applied in environmental remediation during the past decade, especially in the degradation of refractory organic contaminants. The electrochemical method, which is considered as one of the most efficient ways to generate sulfate radical, has been extensively investigated for the activation of persulfate recently. This work presented a thorough assessment towards the performance of electrochemically activated persulfate for the removal of persistent organic pollutants (POPs) in aqueous systems. The mechanism and superiority of electrochemically activated persulfates were revealed accordingly. Some major factors (e.g., electrode material, pH, current density, and persulfate concentration) influencing the electrochemical activation of persulfates to remove POPs were also discussed. Considering the increasing quantity of publications on this subject, it is significant to broader guidelines such as the efficiency for practical application, quantization of organic by-products, and cost-effectiveness of the electrochemical method to optimize active persulfate in the water treatment processes. [Display omitted] •Highlight:•Possible mechanisms of electro-activated persulfate reactions were revealed.•Superiority of electrochemically electro-activated persulfates was discussed.•Major factors influencing electro-activated persulfate reactions were proposed.•Applications of electro-activated persulfate to water treatment were discussed.
ISSN:0301-4797
1095-8630
DOI:10.1016/j.jenvman.2020.110125