Non-negligible Organic Carbon Transfer during Organic Pollutant Degradation Processes by Advanced Oxidation Technologies

Heterogeneous Fenton and Fenton-like reactions, as one of the significant development directions of advanced oxidation processes (AOPs), still have some limitations that hinder their large-scale practical application. Organic carbon transfer processes (OCTPs) in AOPs including direct oxidation transfer processes (DOTPs) and changes in the solubility of pollutant reaction intermediates can lead to a significant accumulation of organics on the catalyst. The accumulation of organics severely impacts the sustainability of the catalyst and may lead to erroneous guidance about the mineralization rate of the reaction system. This perspective provides a comprehensive overview of recent research on OCTPs and presents new viewpoints and research directions for heterogeneous AOPs.