1. Recovery of Copper from the Acid-Leachate of Printed Circuit Boards by Electrolysis Process.
- Author
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Yi-Chieh Lai, Wen-Jhy Lee, and Kuo-Lin Huang
- Abstract
This study focuses on recovering Cu metal from the acid-leachate of printed circuit boards (P-CBs) using a fluidized-bed electrolysis process. The electrolytic cell was equipped with a glass bead medium, an iridium oxide mesh anode, and a stainless steel plate cathode. The effects of electrolysis parameters (initial electrolyte pH and electrolytic time) on the electrolytic recoveries of Cu were investigated. For 2hr electrolysis at initial electrolyte pH of 2.5-4.5 under constant current 2 A, the maximum electrolytic recovery of Cu (~43%) was obtained at the initial electrolyte pH of 4.5. Under this initial electrolyte pH, it was found that the recoveries of Cu dramatically increased with electrolytic time and the maximum recovery of Cu (77%) was obtained at 6 hr. Furthermore, XRD patterns of the electrodeposited compounds on cathode show that Cu is the predominant one oil surface of cathode, mainly indicating a fluidized-bed electrolysis process is feasible for the Cu recovery. However, further study is necessary to improve the metal recovery. [ABSTRACT FROM AUTHOR]
- Published
- 2008