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Studies on Removal of Acid Orange 7 by Advanced Oxidation Process Using UV and Hydrogen Peroxide (H2O2)

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Document pages: 8 pages

Abstract: Advanced Oxidation Processes could be a good option to treat and eliminate textile dyes. The main advantage of AOP is its simplicity in usage and there is no sludge problem. In the present study, Synthetic dye Acid Orange 7(AO7), an anionic dye is used and its characterization is one by measuring pH, and Color. Decolourization studies of AO7 dye is carried out with H2O2 & UV in specially designed SS reaction vessel equipped with UV tube. Experiments were performed or UV and H2O2 alone and combination of both at optimized condition. Various process parameters like pH, dosage of H2O2, Contact time of UV & H2O2 is varied and their effect have been analysed. As a result, dosage of 20-30ml H2O2 100ml at neutral pH and contact time of 30 mins were found to be optimized condition for the colour removal with H2O2 and Colour removal of about 100 is obtained at neutral pH with combination of H2O2 dosage of 30ml and UV contact time of 90 minutes during batch study.100 removal of colour achieved after 4 hours of contact time of UV and 30ml 1000ml dosage of H2O2 during continuous flow experiment maintained at a flow rate of 11.0ml min.Experiment on Industrial effluent is also performed and 100 removal is obtained for 30ml dosage of H2O2 in combination with UV after a contact time of 24 hours.

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