A TBP/BTBP-based GANEX Separation Process. Part 1: Feasibility

A GANEX (Group ActiNide EXtraction) separation system for transmutation has been developed. In this separation process the actinides should be extracted as a group from the lanthanides and the fission and corrosion/activation products. This can be achieved by combining BTBP (bis-triazine-bipyridine)...

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Bibliographic Details
Published in:Solvent extraction and ion exchange 2010-06, Vol.28 (4), p.437-458
Main Authors: Aneheim, Emma, Ekberg, Christian, Fermvik, Anna, Foreman, Mark R. St. J., Retegan, Teodora, Skarnemark, Gunnar
Format: Article
Language:English
Subjects:
Actinides
americium(iii)
behavior
BTBP
Corrosion products
diamex process
extraction
Feasibility
Fission
GANEX
Lanthanides
Liquid-liquid extraction
minor actinides
Nitric acid
normal-butyl phosphate
quadridentate
Separation
Solvent extraction
TBP
transmutation
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Summary:A GANEX (Group ActiNide EXtraction) separation system for transmutation has been developed. In this separation process the actinides should be extracted as a group from the lanthanides and the fission and corrosion/activation products. This can be achieved by combining BTBP (bis-triazine-bipyridine) with TBP (tri-butyl phosphate) in cyclohexanone. From 4M nitric acid this organic system extracts the actinides (log(D Am ) = 2.19, log(D Pu ) = 2.31, log(D U ) = 1.03, log(D Np ) = 0.53) and also separates them from the lanthanides (log(D La ) = −2.0, log(D Ce ) = −1.72, log(D Nd ) = −1.05, log(D Sm ) = −0.18, log(D Eu ) = −0.02). One problem encountered is that some of the fission and corrosion products are also extracted. The new system however still looks feasible.
ISSN:0736-6299
1532-2262
1532-2262
DOI:10.1080/07366299.2010.480930