Optimization Through Box-Behnken Design for Cr(VI) Degradation from Real Tannery Wastewater Using Graphite Electrode by Electrocoagulation

The mitigation of tannery effluents is a rising issue owing to the complex mixture contaminants and hazardous chemicals, mostly chromium. disposal effluent into various water sources such as ponds, lakes, rivers, etc., affects ecosystem aquatic lives. current work scrutinizes performance EC unit for Cr(VI) degradation from real effluent. chromium removal efficiency was evaluated using an iron graphite electrode in parallel arrangement (MP-P). anode employed generate metal coagulant species whereas, served cathode. Furthermore, based upon factors mainly pH, density (CD), electrolysis duration initial pollutant concentration, process statistically optimized BBD-based response surface methodology (RSM). Optimization all four independent variables determined be pH = 5.27, CD 6.26 mA/cm2, time 26.7 minutes concentration 133.62 mg/L respectively on which maximum 89.12% obtained. Residual, response, probability, 3D surfaces, contour plots were analysis variance (ANOVA).