Recent advances and applicable flexibility potential of electrochemical processes for wastewater treatment

This study examined >140 relevant publications from the last few years (2018-2021). In this study, classification was reviewed depending on the operation's progress. Electrocoagulation (EC), electrooxidation (EO), electroflotation (EF), electrodialysis (ED), and electro-Fenton (EFN) processes have received considerable attention. The type of action (in-dividual or hybrid) for each electrochemical procedure was evaluated, and statistical analysis was performed to com-pare them as a new manner of reviewing cited papers providing a massive amount of information efficiently to the readers. Individual or hybrid operation progress of the electrochemical techniques is critical issues. Their design, op-eration, and maintenance costs vary depending on the in-situ conditions, as evidenced by surveyed articles and statistical analyses. This work also examines the variables affecting the elimination efficacy, such as the applied cur-rent, reaction time, pH, type of electrolyte, initial pollutant concentration, and energy consumption. In addition, owing to its efficacy in removing toxins, the hybrid activity showed a good percentage among the studies reviewed. The promise of each wastewater treatment technology depends on the type of contamination. In some cases, EO re-quires additives to oxidise the pollutants. EF and EFN eliminated lightweight organic pollutants. ED has been used to treat saline water. Compared to other methods, EC has been extensively employed to remove a wide variety of con-taminants.

Automated summary

This study examined over 140 relevant publications from the years 2018-2021, evaluating the classification and progress of various electrochemical processes. The study found that electrocoagulation, electrooxidation, electroflotation, electrodialysis, and electro-Fenton processes have received significant attention. The individual or hybrid operation progress of these techniques is critical, with design, operation, and maintenance costs varying depending on site conditions. The study also analyzed the variables affecting treatment efficacy and found that hybrid activities showed promising results in removing toxins.