Sorption of REE(III), Th(IV), and U(VI) ions from nitric acid solutions with sorbents based on tetraoctyldiglycolamide

The characteristics of various sorbents based on tetraoctyldiglycolamide (TODGA) in sorption of REE(III), Th(IV), and U(VI) ions from nitric acid solutions were studied. The static capacity of the sorbents increases as the TODGA content of the sorbent and HNO 3 concentration in the initial solution...

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Bibliographic Details
Published in:Radiochemistry (New York, N.Y.) N.Y.), 2015-09, Vol.57 (5), p.513-517
Main Authors: Milyutin, V. V., Gelis, V. M., Nekrasova, N. A., Firsova, L. A., Kharitonov, O. V., Baulin, V. E.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Nuclear Chemistry
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Summary:The characteristics of various sorbents based on tetraoctyldiglycolamide (TODGA) in sorption of REE(III), Th(IV), and U(VI) ions from nitric acid solutions were studied. The static capacity of the sorbents increases as the TODGA content of the sorbent and HNO 3 concentration in the initial solution are increased. Europium can be desorbed with dilute HNO 3 (0.01 M) and complexone (DTPA) solutions. The sorption characteristics of the sorbents in repeated sorption–desorption cycles remain stable. The sorbents prepared by joint copolymerization (solid extactants, SEs) exhibit better sorption and kinetic characteristics compared to the sorbents prepared by impregnation of the ready polymeric matrix.
ISSN:1066-3622
1608-3288
DOI:10.1134/S1066362215050100