| 摘要 |
PURPOSE: Provided is a method of recovering copper element from CuCl2-containing wastewater of printed circuit board(PCB) washing, which is employed for ion exchange resin and concentration. CONSTITUTION: The method proceeds to the following steps: an adsorption process for separating CuCl2 wastewater to Cu by ion exchange resin; a desorption process for separating adsorbed Cu from the resin by a mixing agent; and recovering Cu from the former mixture through ion resin exchange and concentration simultaneously. The mixing agent is composed of methanol, acetone and HCl of 1 : 1 : 3 of volume ratio. The hydrochloric acid is 1.0M of HCl.
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