Removal of Organic Compounds Found in the Wastewater through Electrochemical Advanced Oxidation Processes: A Review

Abstract

Existence of an organic compounds, especially aromatic compounds in wastewater is observed as an emerging environmental problem because of their harmful effects on living organisms even at low concentration. Conventional wastewater treatment processes are ineffectual for an elimination of refractory organic compounds. Nowadays, it’s a challenge to reduce negative impact of such hazardous compounds on environment. So, Advanced Oxidation Processes (AOPs) have received more attention over a year of decades towards removal of an aromatic compounds. Among AOPs, Electrochemical Advanced Oxidation Processes (EAOPs), especially “Anodic Oxidation” and “Electro-Fenton,” have revealed good potential for mitigation of pollution caused by the presence of aqueous organic compounds in wastewater. This review has introduced an innovative collection of current knowledge on Electro-Fenton and Anodic oxidation type of processes. Fundamentals of these processes, electrolysers used, reaction mechanisms, experimental parameters affecting these electro-chemical treatment technologies with various applications are discussed in detail. This report also discusses effectiveness of EAOPs for elimination of organic compounds in aqueous systems.