Process for the recovery of strontium from acid solutions

Compositions – Radioactive compositions – Nuclear reactor fuel

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252626, 252627, 210682, 210685, G21C 1946, G21C 1942, C02F 126

Patent

active

051005859

ABSTRACT:
The invention is a process for selectively extracting strontium and technetium values from aqueous nitric acid waste solutions containing these and other fission product values. The extractant is a macrocyclic polyether in a diluent which is insoluble in water, but which will itself dissolve a small amount of water. The process will extract strontium and technetium values from nitric acid solutions which are up to 6 molar in nitric acid.

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Pedersen et al., Macrocyclic Polyethers and Their Complexes, Angew. Chpm. Internat. Edit., vol. 11, 1972, No. 1.
Gerow et al., Extraction of Cs.sup.+ and Sr.sup.2+ From HNO.sub.3 Solution Using Macrocyclic Polyethers, Separation Science and Technology, 16(5), pp. 519-548, 1981.
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Tashmukhamedov et al., The Study of Ionophoril Effect of Some New Derivatives of Cyclic Polyethers . . . , 93, Chem. Abs. (#23), ABS #216, 956j.
Antaya, B. L., Cesium Extract From HNO.sub.3 . . . , M.S. Thesis, Univ. of South Carolina, 1981.
Gerow, I. H., The Use of Macrocyclic Polyethers to Remove CS.sup.137 From Acid . . . , PhD Thesis, Univ. of South Carolina, 1979.
Shulpr, R. G., Experimental Measurement of Distribution Coefficients . . . , M. S. Thesis, Univ. of South Carolina, 1982.

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