The Extraction by N,N'-Tetrabutylglutaramides. II. Extraction of U(VI), Pu(IV) and Some Fission Products

The extraction of U(VI) and Pu(IV) from aqueous nitrate solutions by N,N'-tetrabutylglutaramide (TBGA) has been investigated. At low acidities, the extraction takes place via the formation of, respectively, UO sub 2 (NO sub 3 ) sub 2 TGBA and Pu(NO sub 3 ) sub 4 TBGA which seem to be linked wit...

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Bibliographic Details
Published in:Solvent extraction and ion exchange 1989-01, Vol.7 (6), p.1007-1025
Main Authors: Charbonnel, M C, Musikas, C
Format: Article
Language:English
Online Access:Get full text
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Summary:The extraction of U(VI) and Pu(IV) from aqueous nitrate solutions by N,N'-tetrabutylglutaramide (TBGA) has been investigated. At low acidities, the extraction takes place via the formation of, respectively, UO sub 2 (NO sub 3 ) sub 2 TGBA and Pu(NO sub 3 ) sub 4 TBGA which seem to be linked with additional molecules of TBGA in the second coordination sphere of the metal. When the saturation of TBGA by UO exp 2+ sub 2 solutions is reached, the uranyl complex reorganizes to give a polymer (UO sub 2 (NO sub 3 ) sub 2 TBGA) sub x . At high acidities, the anionic complexes: (UO sub 2 (NO sub 3 ) exp -- sub 3 )(HTBGA exp + ) and probably (HPu(NO sub 3 ) exp -- sub 6 )(HTBGA exp + ) are observed. Graphs, Spectra. 12 ref.--AA
ISSN:0736-6299
DOI:10.1080/07360298908962351