Process for the extraction of cesium ions from aqueous solutions

Details Process for the extraction of cesium ions from aqueous solutions Process for the extraction of cesium ions from aqueous solutions

1982-08-27

1984-07-17

Cintins, Ivars C.

Liquid purification or separation

Processes

Ion exchange or selective sorption

210681, 423181, B01J 3904

Patent

active

044604742

ABSTRACT:
A process for the extraction of cesium ions from an aqueous solution with an adduct compound in solid form containing a macrocyclical polyether and an inorganic heteropoly acid. The adduct compounds employed comprise an adduct of (a) benzo-15-crown-5 (B-15-C-5); dibenzo-21-crown-7 (DB-21-C-7); or dibenzo-30-crown-10 (DB-30-C-10), with (b) 12-molybdophosphoric acid (HPMo); 12-tungstophosphoric acid (HPW); 12-molybdosilicic acid (HSiMo); 12-tungstosilicic acid (HSiW); or an Na, K, Tl, or NH.sub.4 salt of any of these acids.

REFERENCES:
patent: 2925323 (1960-02-01), Rimshaw
patent: 3097920 (1963-07-01), Knoll
patent: 4033764 (1977-07-01), Colegate et al.
patent: 4087375 (1978-05-01), Tanno
J. Rais et al., "New Type of Sorbents Based on Polyethers and Some Hydrophobic Anions", J. of Radioanalytical Chem. vol. 35, (1977), pp. 351-359.
L. A. Fernando et al., "Alkali Metal Ion Specificity of a Crown Ether Precipitate with Phosphomolybdic Acid", Radiochem. Radioanal. Letters 38/5-6/387-394/1979, pp. 387-394.
L. A. Fernando et al., "Ion-Exchange Properties of Crown Ether-Phosphomolybdic Acid Precipitates", Anal. Chem., 1980, vol. 52, pp. 1115-1119.
Journal of the American Chemical Society, vol. 89, Nov. 8th, 1967, No. 23, pp. 7017-7036.

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