OPTIMIZATION OF AZO-DYES TO REDUCE ENVIRONMENTAL IMPACT OF TEXTILE INDUSTRIES.

The dyes which are released into water bodies become detrimental, color is only the factor, the other fact is that under the action of anaerobic bacteria they form toxic compounds and they are also not easily degradable. Thus, before discharging them into water bodies the complete degradation of these organic compounds becomes necessary. Even by using well established techniques like adsorption, coagulation, membrane separation, flocculation, aerobic biological separation, precipitation is not possible to completely degrade such types of pollutant. In recent years an alternative method is developed, known as ?Advance Oxidation Process? (AOPs).The AOP results in complete degradation as compared to other usual oxidants, in this process the radicals are greater oxidizing power. The later one is better technique for organic pollutant degradation however AOP?s includes both heterogeneous and homogeneous photocatalytic processes. In present work Photo- catalytic degradation of Yellow 6 dye was performed in the photoreactor in which process takes place reaction vessel designed specially. In terms of change in dye concentration, pH concentration, radical quencher (propanol), catalyst loading, light intensity and change in terms of color by measuring the optical density. Initially pollutant?s effects are analyzed by varying pollutant concentration. The result shows that chances for reusing the wastewater increases when recalcitrant organic pollutants degrade completely. The photo-catalytic degradation of dye and textile mill wastewater is environmental friendly techniques.