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Conference papers
Development of a selective americium separation process using TPAEN as a water-soluble stripping agent
Abstract : Recycling americium from spent fuels is an important option considered for the future nuclear cycle. The PUREX solvent extraction process can be used to separate U and Pu from a dissolution solution of spent fuel in nitric acid. Then in a second step americium should be separated from fission products and especially lanthanides but also from curium. For this purpose, a new liquid-liquid extraction process is under development using TODGA as an extractant in the organic phase and TPAEN as a selective Am stripping agent in the aqueous phase. With this promising system it is possible to co-extract Am, Cm and lanthanides at high acidity and then selectively strip americium from the loaded organic phase at pH around 1 with TPAEN. Batch data were acquired to evaluate best conditions to develop a liquid-liquid extraction flowsheet and the effect of several parameters on Am/Cm was evaluated like concentration of ligand, cations, temperature, etc.
Cited literature [7 references]
https://hal-cea.archives-ouvertes.fr/cea-02500841
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Submitted on : Friday, March 6, 2020 - 1:25:13 PM
Last modification on : Thursday, September 2, 2021 - 10:06:06 AM
Long-term archiving on: : Sunday, June 7, 2020 - 2:50:12 PM
Contributor : Amplexor Amplexor Connect in order to contact the contributor
Submitted on : Friday, March 6, 2020 - 1:25:13 PM
Last modification on : Thursday, September 2, 2021 - 10:06:06 AM
Long-term archiving on: : Sunday, June 7, 2020 - 2:50:12 PM
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