Selective removal of metals from aqueous solutions with dithioph

Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ib metal

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423100, 423139, 423157, 423DIG14, 75101BE, 75117, 75118R, 75119, 75120, 75121, 210684, 210685, 210687, C01G 300, C01G 5100, C01G 5300

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active

047216050

ABSTRACT:
A process for the extraction of metals selected from the group consisting of zinc (II), silver (I), cadmium (II), mercury (II), nickel (II), cobalt (II), and copper (II) from an aqueous solution containing, in addition to said metals, metals selected from the group consisting of calcium (II) and magnesium (II) is disclosed. The process comprises contacting the aqueous solution having an equilibrium pH within the range of about 0.2 to about 3 with an extractant. The extractant comprises an organic-soluble dithiophosphinic acid or ammonium, alkali or alkaline earth metal salt thereof represented by the formula: ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and are selected from the group consisting of substituted or unsubstituted alkyl, cycloalkyl, alkoxyalkyl, alkylcycloalkyl, aryl, alkylaryl, aralkyl and cycloalkylaryl radicals having from about 2 to about 24 carbon atoms and X is either hydrogen or an ammonium, alkali or alkaline earth metal salt forming radical.

REFERENCES:
patent: 3336133 (1967-08-01), Funatsu et al.
patent: 3432277 (1969-03-01), Reesky
patent: 3966569 (1976-06-01), Reinhardt et al.
patent: 4124462 (1978-11-01), Reinhardt et al.
patent: 4332684 (1982-05-01), De Schepper et al.
patent: 4348367 (1982-09-01), Rickelton et al.
patent: 4353883 (1982-12-01), Rickelton et al.
patent: 4374780 (1983-02-01), Robertson
patent: 4382016 (1983-05-01), Rickelton et al.
patent: 4490338 (1984-12-01), De Schepper et al.
patent: 4619816 (1986-10-01), Rickelton et al.
Rickelton, W. A., Flett, D. S., West D. W., "Cobalt-Nickel Separation by Solvent Extraction with Bis(2,4,4-Trimethylpentyl)Phosphinic Acid." Solvent Extraction and Ion Exchange, 2(6), 815-838 (1984).
Chemical Abstract, 75(20):126044j.
Chemical Abstract No. 76(4):20804n.
Chemical Abstract No. 77(12):83088y.
Chemical Abstract No. 83(12):107669r.
Chemical Abstract No. 87(12):94864f.
Chemical Abstract No. 87(18):145050x.
Chemical Abstract No. 92(6):51311j.
Chemical Abstract No. 93(10):106096w.
Chemical Abstract No. 95(16):143266p.
Chemical Abstract No. 97(12):103489y.
Chemical Abstract No. 98(24):209176e.

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