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.
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Acknowledgment
Work supported by the U.S. Department of Energy, Office of Nuclear Energy, under DOE Idaho Operations Office Contract DE-AC07-05ID14517.
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Martin, L.R., Mincher, B.J. & Schmitt, N.C. Extraction of americium(VI) by a neutral phosphonate ligand. J Radioanal Nucl Chem 282, 523–526 (2009). https://doi.org/10.1007/s10967-009-0153-0
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DOI: https://doi.org/10.1007/s10967-009-0153-0