Continuous regeneration of acid solution

Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step

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156642, 156664, 156666, C23F 102

Patent

active

050133950

ABSTRACT:
A method of continuously regenerating a metal containing acid solution enhanced with a salt-free material. The metal dissolved in a bulk metal containing acid solution is continuously oxidized by introducing a gas into a packed reaction vessel. The packed reaction vessel is in operative relationship with the bulk acid solution for recirculating regenerated solution and for receiving spent solution. The gas is introduced substantially cocurrently with the spent acid solution.

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patent: 3964956 (1976-06-01), Snyder
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patent: 4388276 (1983-06-01), Konstantouros et al.
Evaluation of a Packed Tower for Oxidation of Cuprous Ion in IBM Copper Etching Solution, by Kenneth J. McNulty and Chang-Li Hsieh, Koch Membrane Systems, Inc., Wilmington, MA, 2/22/85.

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