Degradation of commercial azo dyes in water using ozonation and UV enhanced ozonation process

摘要: The chemical oxidation of eight non-biodegradable azo dyes by ozonation and photooxidation process was studied in a pilot scale photochemical (UV/ozone) reactor. In experiments with ozone bubbling, the degradation found to occur absence UV light. rate observed be first order respected both dye concentrations. pH solution decreased while degraded. light did not significantly enhance ability reaction under various conditions. No when irradiated alone. Effects dosage, initial concentrations are discussed. Time for removal 50 % constants can used determine decomposition each different processes as function