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A Comparative Study On Gamma Radiolytic And Oxidative Degradation Of Aqueous Solution Of Methyl Violet 6B

Kirtibala D. Bhaisare1 and Dilip V. Parwate

In textile industry, Advanced Oxidation Processes (AOP’s) are used for degrading and removing colour which allows wastewater reuse. In this study, radiolytic degradation and chemical oxidation process (K2S2O3/Fe2+) were investigated for decolourisation of Methyl Violet 6B (MV) dye. The effects of operating parameters such as potassium persulphate (KPS) dosage, ferrous ion (Fe2+) dosage, pH and gamma radiation on decolourisation have been evaluated. About 52% dye removal was observed by chemical oxidation (K2S2O3/Fe2+) in dark condition while 82.5% by synergistic effect of persulphate (PS) and gamma radiations (dose = 0.078 kGy). Greater removal efficiency was noted at low concentrations of KPS, Fe2+ and low gamma dose. G (-dye) was found to decrease with increase in γ- dose.