Improving the operational parameters with high electrical energy efficiency for UVC induced advanced oxidation and mineralization of Acid blue 29: Generation of eco-friendly effluent

► Operational parameters for treatment of AB 29 at source is established. ► UV/Na2S2O8 system yields >95% mineralization at all pH except at pH 13, where it is 80%. ► Each of Na2S2O8 and H2O2 yields comparable mineralization at all pH except at pH 13. ► Na2S2O8 is more effective oxidant for mineralization and biotoxicity elimination. ► UV/Na2S2O8 system eliminates 90% biotoxicity and generates eco-friendly effluent.