Removal of hexavalent selenium from nickel, cobalt or copper sul

Details Removal of hexavalent selenium from nickel, cobalt or copper sul Removal of hexavalent selenium from nickel, cobalt or copper sul

1984-06-14

1985-10-01

Doll, John

Chemistry of inorganic compounds

Selenium or tellurium or compound thereof

423 34, 423101, 423140, 75 05A, 75 05AA, 75108, 75117, 75119, 75120, 75121, C01B 1900

Patent

active

045445419

ABSTRACT:
A process is provided for removing hexavalent selenium from an acidic sulfate solution containing at least one metal ion from the group consisting of nickel, cobalt and copper at ambient pressure and at a temperature not exceeding the boiling point of the solution. The solution is treated with an agent from the group consisting of a compound which will produce nascent hydrogen in the solution and finely divided metal from the group consisting of nickel, cobalt and copper resulting from in situ precipitation of the metal in the acid sulfate solution. Thus, following treatment with the compound, the hexavalent selenium is reduced to a form separable from the solution by solid-liquid separation.

REFERENCES:
patent: 2111112 (1936-11-01), Dudley
patent: 3933635 (1976-01-01), Marchant
patent: 4026797 (1977-05-01), Nickolic et al.
patent: 4089676 (1978-05-01), Grundy
patent: 4096316 (1978-06-01), Tamai et al.
patent: 4214900 (1980-07-01), Crnojevich et al.
patent: 4405464 (1983-09-01), Baldwin et al.

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