Canadian Journal of Chemical Engineering, Vol.83, No.3, 409-417, 2005
Copper recovery from EDTA - Chelating copper wastewater in a fluidized bed
Copper recovery from ethylenediaminetetraacetic acid (EDTA)-chelating-Cu wastewater was conducted by means of electrochemical process using a Cu cathode and a PbO2 anode. In this study, the effects of operating parameters including current density, initial pH, and electrolytic-cell mode on the quality of copper deposit and current efficiency were studied. It was found that the key factors influencing deposit quality and current efficiency are current density and electrolytic cell mode as well as interactions between them. A better quality of copper deposit with high current efficiency can be obtained at lower current density (2.5 mA/cm(2)) in this fluidized packed-bed electrolytic cell.