The electrocoagulation studies of distillery spentwash using copper anodes were utilized to demonstrate the usefulness of Box–Behnken experimental design of response surface analysis to derive a statistical model and the optimum parameters for color removal. The current intensity (1.5 A), dilution (10%) and time of electrolysis (5 h) had been found to be the optimum conditions for maximum 77.11% color removal. The actual color removal at optimized conditions was found to be 78.26%, which is to the predicted response using response surface methodology. The energy consumption and current efficiency were determined from reduction in chemical oxygen demand.
Dr. Krishna Prasad R., “Degradation of biopolymeric pigments in distillery spentwash by electrocoagulation using copper anodes: statistical and canonical analysis”, Environmental Chemistry Letters, vol. 8, pp. 149-155, 2010.