Process for recovering nickel from spent electroless nickel plat

Details Process for recovering nickel from spent electroless nickel plat Process for recovering nickel from spent electroless nickel plat

1982-03-01

1983-11-22

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

C25C 108

Patent

active

044167458

ABSTRACT:
A process for recovering nickel from spent electroless nickel plating solutions by adjusting the pH of the solution to 10-10.5 with sodium hydroxide, adding ammonium hydroxide to obtain a pH of 11 of the solution, and heating the solution at 40.degree.-50.degree. C. while subjecting the solution to electrolysis to deposit nickel from the spent solution and separating the deposited nickel such that the spent solution may be safely discharged as effluent.

REFERENCES:
patent: 2233103 (1941-02-01), Mantell
patent: 2365356 (1944-12-01), Pilling et al.
patent: 3458407 (1969-07-01), Wrangell
patent: 3510408 (1970-05-01), Murdock et al.
patent: 4127458 (1978-11-01), MacGregor
patent: 4144149 (1979-03-01), Bollhalder et al.
patent: 4162950 (1979-07-01), MacGregor
Mehl E., "Production of Metal Powders", Metal Treatment and Drop Forging, Summer 1950, pp. 118-127.
Walker et al., "Production of Metal Powders by Electro-Deposition", Chemistry and Industry, 6 Oct. 1979, pp. 642-647.

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