New advancement of advanced oxidation processes for the treatment of Petroleum wastewater

This review delves into the significant potential of Advanced Oxidation Processes (AOPs) for tackling the intricate issues found in treating petroleum wastewater. It particularly focuses on the utilization of processes like Fenton reactions, Ozonation-based AOPs, and photocatalytic techniques, highlighting their role in producing powerful reactive oxygen species capable of breaking down organic contaminants. The review also discusses recent advancements in merging Electro-Fenton and photocatalysis to enhance pollutant removal efficiency. Furthermore, it investigates how these methods are being applied specifically to petrochemical wastewater management, including innovative approaches like Fenton, Photo- Fenton, Electro-Fenton, Photo-catalytic oxidation, persulfate activation based AOPs. Operational cost including treatment time, energy requirements, pH adjustment, complexity of reactor setup, removal efficiencies and treated effluent quality, and by-products are some of the challenges critically examined. The article aims to highlight these issues and identify emerging challenges, proposing a shift towards more sustainable and effective wastewater treatment strategies in the future.