Processes and apparatus for recovery and removal of copper from fluids
AssigneeShipley Company, L.L.C.
InventorMartin T. Goosey
Life of this patent
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Abstract
The invention provides novel processes and apparatus for removal of copper from a solution or fluid, particularly spent etchant solutions that contain copper produced through printed circuit board manufacture. The invention is particularly useful for recovery/removal of copper from aqueous admixtures that contain a copper complexing agent.
Claims28
A process for removal of copper from a mixture that contains a copper complexing agent, comprising:
- providing a system that comprises an electrolytic cell that comprises an anode and a cathode separated by a copper ion-permeable membrane;
- adding to the system a fluid that contains copper and a copper complexing agent;
- and
- electrolytically treating the fluid.
A system for removal of copper from a mixture, comprising an electrolytic cell that comprises an anode and a cathode separated by a copper ion-permeable membrane, a mixture comprising copper and a copper complexing agent as the catholyte or anolyte for the cell, and a filtration apparatus.
A system for removal of copper from a mixture, comprising an electrolytic cell that comprises an anode and a cathode separated by a copper ion-permeable membrane, and a filtration apparatus.
A method for copper removal, comprising:
- a) providing a system that comprises 1) an electrolytic cell that comprises an anode and a cathode separated by a copper ion-permeable membrane, and 2) fluid that contains copper and is produced from a printed circuit board manufacturing process;
- b) electrolytically treating the fluid.
Dependencies are inferred from the claim text.