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Patent

Recovery of metal from rinse solutions

Smith Jack D
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TLDR
In this paper, a method of recovering valuable metals from rinse baths associated with electroplating processes was proposed, which utilizes electrodialysis to concentrate the metal to a sufficiently high concentration that convenient recovery of the metal, e.g., nickel or copper, can be completed by handling the metal as an ion in a liquid phase and without the need to plate the metal out on an electrode or precipitate it in any solid form.
Abstract
A method of recovering valuable metals from rinse baths associated with electroplating processes. The recovery utilizes electrodialysis to concentrate the metal to a sufficiently high concentration that convenient recovery of the metal, e.g., nickel or copper, can be completed by handling the metal as an ion in a liquid phase and without the need to plate the metal out on an electrode or precipitate it in any solid form.

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