| Summary: | This research emphasized the importance of removing organic pollutants from wastewater discharges. In this review, different advanced oxidation processes are discussed. A broad classification of advanced oxidation processes was used for wastewater treatment. An overview of TiO2-based photocatalysis, the Fenton process, and photocatalytic ozonation has been done. The mechanism of different methods has been studied. The advantages and limitations of these processes are also discussed. Various kinds of catalyzed were used in TiO2-based photocatalysis for various categories of organic contaminants, and several factors with crucial effects on TiO2-based photocatalytic degradation were examined. The typical treatment scheme of Fenton's method was reviewed. Also similarly, a review of photocatalytic ozonation: mechanism of the reaction, its applications with different catalysts, and economic aspects of photocatalytic ozonation were done.
HIGHLIGHTS
Overview of advanced oxidation processes (AOPs) and their potential for wastewater treatment.;
Photocatalysis: using catalysts and light to produce reactive oxygen species (ROS) for oxidation.;
Ozonation: using ozone to generate ROS for oxidation.;
AOPs effective at removing organic compounds that are resistant to biological treatment.;
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