Study of Copper Recycling from Ion-exchange Regeneration Solution by Electro-deposition Method

When copper-containing electroplating wastewater was treated by ion-exchange method,Cu2 + content in the regeneration solution was high and recoverable,so electrolysis method could be adopted for recovering the Cu2 +from regeneration solution to achieve resources sustainable development. In this paper,effects of current density,initial Cu2 +concentration,pH,temperature and electrolysis time on Cu2 +recovery efficiency and current efficiency were inspected. Results indicated that for the copper-containing electroplating wastewater with 10 ~ 15 g / L initial Cu2 +concentration,copper recovery efficiency, current efficiency and copper purity could be reached to 94. 4%,68. 7% and 99. 7% respectively,under the following condition: current density was 2. 1 A / dm2,pH =0. 8,temperature at 60℃ and electrolysis time was 4 h.