Removal of cadmium from acidic phosphatic solutions

Details Removal of cadmium from acidic phosphatic solutions Removal of cadmium from acidic phosphatic solutions

1983-05-18

1985-01-08

Heller, Gregory A.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423100, 423321R, C01B 2516, B03C 100, C01G 900

Patent

active

044926804

ABSTRACT:
The invention is concerned with a process of removing cadmium from acid, especially P.sub.2 O.sub.5 -containing solutions by liquid/liquid extraction with the aid of alkyl amine salts that are dissolved in an inert, organic solvent. The cadmium ions are removed from the acid, aqueous phase and are enriched in the organic phase. The cadmium-containing organic phase, subsequently, is re-extracted with an aqueous salt solution, with the cadmium ions migrating from the organic phase into the aqueous phase. The process is particularly suitable for extracting cadmium from concentrated, highly acid aqueous solutions.

REFERENCES:
patent: 3258307 (1966-06-01), George
patent: 3458282 (1969-07-01), Koerner et al.

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