Extractant for the selective removal of cobalt(II) from aqueous

Details Extractant for the selective removal of cobalt(II) from aqueous Extractant for the selective removal of cobalt(II) from aqueous

1982-06-23

1983-05-03

Garvin, Patrick

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252426, 252431P, C01G 5100

Patent

active

043820166

ABSTRACT:
Cobalt(II)-bearing aqueous solutions may be treated with an extractant comprising an organic-soluble phophinic acid, or a salt thereof, to separate the cobalt(II) from the aqueous solution. Typical extraction techniques compatible with the instant process include liquid-liquid extraction employing either mixer settlers or columns, packed beds of supported extractants as in ion exchange, liquid membrane extraction and selective supported membrane extraction.

REFERENCES:
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patent: 4058585 (1977-11-01), MacKay
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patent: 4268395 (1981-05-01), Stewart
Hayworth, Paper Presented at A.C.S. Annual Meeting, San Francisco, Ca., 8/28/80.
Peppard, J. Inorg. Nucl. Chem. (1959), vol. 12, pp. 60-70.
Blake, Proc. Int. Conf. on Peaceful Uses of Atomic Energy, (1958), vol. 28, pp. 289-298.
Brochure "Karr Column: Countercurrent and Fraction Liquid Extraction", Chem. Pro Corp., N.J.
Karr, A.I.Ch.E. Journal, vol. 5, (1959), pp. 446-452.
TMS Paper A81-29, A.I.M.E., Warrendale, Pa., (Jan. 1981).
Bock et al., Paper Presented at Second Chemical Congress of the North American Continent, 8/28/80.

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