ADVANCED OXIDATION PROCESSES FOR WATER PURIFICATION: REVIEW

Advanced oxidation processes (AOPs) use the hydroxyl radical (OH) to oxidize organic compounds in polluted water, leading to mineralization. This review cites some technologies for the treatment of drinking water and wastewater to remove their pollutants from industrial and municipal waste such as phenolic compounds, medicines, dyes, etc., through different AOPs. The ways to generate the OH radical are cited as: Fenton reaction, sonolysis, photocatalysis, UV light - peroxides, catalytic ozonation, electro-Fenton and radiolysis. In these technologies in which the OH radical is produced, they are considered a magnificent option to eliminate recalcitrant organic material by oxidation reactions with the OH radical, which is a strong non-selective electrophilic species. Liquid chromatography makes it possible to monitor the degradation of pollutants; the chemical oxygen demand and the measurement of total organic carbon quantify the degradation of these contaminants.