(632d) Recovery of Copper From Etching Effluent Using Electrodialysis

Nagasawa, H., The University of Tokyo
Iizuka, A., Tohoku University
Yanagisawa, Y., The University of Tokyo

The copper recovery from the etching effluent using electrodialysis was experimentally studied. Cupric ions was separated and concentrated from the strong hydrochloric acid-based copper containing etching effluent with electrodialysis. After the concentration, copper have been recovered in the form of copper oxides via electro-basification. The effects of the operating parameters such as a cupric ion concentration, a chloride ion concentration, and a current density have been examined.