Recovery of Copper Ions from Industrial Wastewater by Electrodeposition

Abstract

Electrodeposition is an attractive method used for the recovery and removal of metal ions from metal coatings, metal processing and electronic industry wastes. In this study, copper was both removed and recovered from industrial wastewater containing copper by using the electrodeposition method. Two series of experiments were conducted by using copper and stainless steel as cathodes. In both experiments, the effects of current, pH, conductivity and initial copper concentration on the electrodeposition efficiency were investigated, and optimum values were obtained. With this method, the amount of copper removed from industrial wastewater under optimum conditions was 66% in the experiments conducted with the copper cathode and 80% in the experiments conducted with the stainless steel cathode. It was also observed as a result of the experiments that the copper removed from the wastewater was deposited on the cathode. In addition, reaction kinetics suitable for the experimental conditions were investigated and generally found to be compatible with a second-order kinetic model.