The fundamental principle behind ozone-based AOPs is the decomposition of ozone to generate hydroxyl radicals (•OH). This can be achieved through various methods, including direct ozonation, ozone combined with hydrogen peroxide (O3/H2O2), and ozone combined with ultraviolet light (O3/UV). These methods facilitate the formation of •OH radicals, which then oxidize organic contaminants, rendering them into less harmful substances or completely mineralizing them into water, carbon dioxide, and inorganic ions.
