The removal of solubilized vat dye effluent using photo detoxification method was studied at various pH ranges. Experiments were carried out with synthetic effluent using total dye concentrations of 50, 100, 200, 300, and 350 mg/L. In sunlight photo oxidation, the original soluble vat dye is precipitated and can be filtered and reused by the textile industries. The effect of the different concentrations (1,000, 2,000, 3,000 mg/L) of total dissolved solids on the removal of vat dye was also carried out in the photo detoxification process. The efficiency of the dye removal was found to be 99 %.
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