Degradation of latex wastewater by electrochemical advanced oxidation process powered by microbial fuel cell

Abstract

Degradation of latex wastewater contaminated with a mixture of organic compounds has become a unique challenge among the researchers An effort was initialized to treat the latex wastewater using electro Fenton process followed by Microbial fuel cell Wastewater collected from the natural rubber latex processing and production industries were treated using bench scale reactor with hopper bottom of 5 L working volume equipped with iron anode and graphite cathode and the effect of COD and colour removal were studied Response surface methodology based on central composite design CCD was performed to evaluate the optimal values of parameters such as pH Fe2 concentration H2O2 concentration and current intensity of electroFenton process In latex processing wastewater 82 COD removal and 92 colour removal were achieved in 30 min reaction with an optimal values of pH 3 5 Fe2 573 mgL and H2O2 7424 mgL In case of latex production wastewater COD removal and colour removal were 85 and 91 corresponds to an optimal values of pH 4 1 Fe2 378 mg L and H2O2 3170 mgL newline