Abstract
A method based on synergic extraction has been evolved for the recovery of tens of milligrams of americium from analytical wastes in 7-8M HNO3 medium containing excess uranium as a two step procedure viz., (1) separation of uranium by contacting with TBP in dodecane and (2) recovery of americium by an extraction-cum-strip cycle using a synergic mixture of PMBP-TBP in dodecane after decreasing the acidity of the solution. Other transition metals such as iron found in significant proportion were separated from Am by using the difference in the kinetics of extraction of iron and americium into HPMBP-TBP-dodecane mixture by short duration contacts. About 99% of Am could be recovered into about 20% of its initial volume.
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Veeraraghavan, R., Hon, N.S. & Page, A.G. Synergic extraction for recovery of americium from waste solution containing an excess of uranium. Journal of Radioanalytical and Nuclear Chemistry 261, 69–72 (2004). https://doi.org/10.1023/B:JRNC.0000030936.89243.0c
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DOI: https://doi.org/10.1023/B:JRNC.0000030936.89243.0c