Extraction of americium(VI) by a neutral phosphonate ligand

Leigh R. Martin; Bruce J. Mincher; Nicholas C. Schmitt

doi:10.1007/s10967-009-0153-0

Extraction of americium(VI) by a neutral phosphonate ligand

Leigh R. Martin, Bruce J. Mincher, Nicholas C. Schmitt

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

Recently the use of the more unusual hexavalent oxidation state of americium has been receiving increased attention for the purpose of developing an efficient Am/Cm or Am/lanthanide separation system. We have already demonstrated the feasibility of performing this separation with 30% TBP in dodecane, and are now looking at different extractants to increase Am(VI) distribution ratios. Following on from this the extraction of bismuth oxidized americium from nitric acid solutions by dibutyl butyl phosphonate has been studied. The results of this study indicate that increasing the basicity of the extractant molecule has significantly improved the extraction efficiency.

Original language	English
Pages (from-to)	523-526
Number of pages	4
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume	282
Issue number	2
DOIs	https://doi.org/10.1007/s10967-009-0153-0
State	Published - Nov 2009
Externally published	Yes

Funding

Acknowledgment Work supported by the U.S. Department of Energy, Office of Nuclear Energy, under DOE Idaho Operations Office Contract DE-AC07-05ID14517.

Funders	Funder number
U.S. Department of Energy	DE-AC07-05ID14517
Office of Nuclear Energy

Keywords

Hexavalent americium
Solvent extraction

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10.1007/s10967-009-0153-0

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AU - Mincher, Bruce J.

AU - Schmitt, Nicholas C.

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AB - Recently the use of the more unusual hexavalent oxidation state of americium has been receiving increased attention for the purpose of developing an efficient Am/Cm or Am/lanthanide separation system. We have already demonstrated the feasibility of performing this separation with 30% TBP in dodecane, and are now looking at different extractants to increase Am(VI) distribution ratios. Following on from this the extraction of bismuth oxidized americium from nitric acid solutions by dibutyl butyl phosphonate has been studied. The results of this study indicate that increasing the basicity of the extractant molecule has significantly improved the extraction efficiency.

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Extraction of americium(VI) by a neutral phosphonate ligand

Abstract

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