Purification of nickel electrolyte by electrolytic oxidation

Details Purification of nickel electrolyte by electrolytic oxidation Purification of nickel electrolyte by electrolytic oxidation

1975-09-10

1976-09-28

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204113, C25F 702, C25D 2116

Patent

active

039830187

ABSTRACT:
The presence of one or more of cobalt, iron, arsenic and lead is most substantially reduced in a nickel-containing electrolyte by an electrochemical process utilizing a high current density at the cathode in an electrolytic cell containing specific quantities of chlorides of alkali metals to form a fine nickel hydroxide precipitate. In a subsequent time dependent reaction under controlled pH conditions, nickel hydroxide reacts with the electrolyte to form insoluble precipitates of cobalt, iron, arsenic and lead which are removed from the electrolyte by filtration.

REFERENCES:
patent: 2394874 (1946-02-01), Renzoni
patent: 3334034 (1967-08-01), Geldzahler
patent: 3457152 (1969-07-01), Maloney, Jr. et al.
patent: 3640805 (1972-02-01), Knight

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