Electrochemical Advanced oxidation processes for Industrial wastewater Treatment

Abstract

Few research initiatives have been performed over the last several decades to develop larger scope, cost-effective, and long-term techniques for the treatment of wastewater from businesses that produce persistent organic pollutants. As the removal, handling and disposal of these pollutants are very critical steps which imposes additional cost and safety concerns to the industry. Electrochemical Advanced oxidation processes (EAOPs) attains high interest among industries as compared to other alternates, due to its unique advantage of mineralizing the pollutants completely, leading to the cut off of additional step of disposal of the separated pollutant. The adaptation of EAOPs among industries is limited to the fact of having high operational cost. However, the efficiency of the process can be improved by adopting various improvements related to the operational conditions, geometrical modifications to improve the mass transfer and interfacial resistances, and selection of electrodes. This study focuses on current advancements in the modification of electrode materials, with an emphasis on their compatibility in treating actual industrial wastewater, therefore improving selectivity, stability at greater concentrations, and lowering mineralization and operational costs. Finally, an emphasis was made to the selection of processes, inhering challenges and future aspects of utilization of these treatment technologies.