Comprehensive understanding of electrochemical treatment systems combined with biological processes for wastewater remediation

The presence of toxic pollutants in wastewater discharge can affect the environment negatively due to presence of the organic and inorganic contaminants. The application of the electrochemical process in wastewater treatment is promising, specifically in treating these harmful pollutants from the aq...

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Bibliographic Details
Published in:Environmental pollution (1987) 2023-08, Vol.330, p.121680-121680, Article 121680
Main Authors: Yakamercan, Elif, Bhatt, Pankaj, Aygun, Ahmet, Adesope, Adedolapo W., Simsek, Halis
Format: Article
Language:English
Subjects:
Contaminants
Electrocoagulation
Electrooxidation
Environment
Pollutants
Wastewater
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Summary:The presence of toxic pollutants in wastewater discharge can affect the environment negatively due to presence of the organic and inorganic contaminants. The application of the electrochemical process in wastewater treatment is promising, specifically in treating these harmful pollutants from the aquatic environment. This review focused on recent applications of the electrochemical process for the remediation of such harmful pollutants from aquatic environments. Furthermore, the process conditions that affect the electrochemical process performance are evaluated, and the appropriate treatment processes are suggested according to the presence of organic and inorganic contaminants. Electrocoagulation, electrooxidation, and electro-Fenton applications in wastewater have shown effective performance with high removal rates. The disadvantages of these processes are the formation of toxic intermediate metabolites, high energy consumption, and sludge generation. To overcome such disadvantages combined ecotechnologies can be applied in large-scale wastewater pollutants removal. The combination of electrochemical and biological treatment has gained importance, increased removal performance remarkably, and decreased operational costs. The critical discussion with depth information in this review could be beneficial for wastewater treatment plant operators throughout the world. [Display omitted] •Inclusive explanations of electrochemical processes have been discussed.•Electrochemical processes degrade a wide variety of chemicals in wastewater.•Combination of electrochemical-biological processes enhances pollutants removal.•Pre-electrochemical processes enhance the degradation of pollutants.
ISSN:0269-7491
1873-6424
DOI:10.1016/j.envpol.2023.121680