Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ib metal
Patent
1985-11-21
1987-05-19
Doll, John
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group ib metal
423DIG14, 423 42, 75101BE, 75108, 75117, 210660, 210667, 210670, 210681, 210685, 210702, C01G 300
Patent
active
046666834
ABSTRACT:
A process is provided for removing copper from a solution containing same with a chelating agent. The process is advantageously practiced on aqueous effluents from electroless plating systems to remove copper from an aminopolycarboxylic acid chelating agent such as ethylene diaminetetraacetic acid (EDTA). The process comprises contacting an acidic solution containing copper, and optionally ferric iron ions, and the chelating agent with a water insoluble ion exchange resin having a picolylamine or a pyridyl-imidozole functionality, whereby copper is selectively retained by the resin and the chelating agent remains in solution, and then removing the solution from the resin.
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Brown Craig J.
Dejak Michael J.
Doll John
Eco-Tec Limited
Stoll Robert L.
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