Electrotreatment of industrial copper plating rinse effluent using mild steel and aluminum electrodes

Abstract

BACKGROUND: Heavy metals from aqueous streams can be removed effectively using electrochemical techniques. Although both mild steel (MS) and aluminum (Al) electrodes have long been considered for the treatment of different waste-waters, unfortunately the reported optimum treatment time, current density, pH and background electrolyte concentration vary greatly. In this work, an electrochemical technique was used for the removal of Cu from electroplating rinse water collected from a local plating industry using MS and Al as electrode materials.

Recovery of copper from dilute cupric sulfate solution by electrodeposition method using boron‐doped diamond electrodes

“…Therefore, it is of great importance to recover Cu from the industrial wastewater. The wastewater treatments containing Cu have been carried out by various techniques, such as chemical precipitation , coagulating sedimentation , adsorption , ion exchange , membrane separation , and electrochemical methods . Although chemical precipitation method is effective for high concentration wastewater and the most commonly used technique due to relatively simple operation and ease of pH control, the process needs to put additional chemicals into the wastewater and generates large amounts of sludge with the relatively low density Cu to be handled with difficulties.…”