Journal
SOLVENT EXTRACTION AND ION EXCHANGE
Volume 27, Issue 1, Pages 26-35Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/07366290802544726
Keywords
Solvent extraction; partitioning; TODGA process; minor actinides; americium
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Funding
- European Commission [FI6W-CT-2003-508854]
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Efficient recovery of minor actinides (MA) from genuine PUREX raffinate has been successfully demonstrated by the TODGA + TBP extractant mixture dissolved in an industrial aliphatic solvent TPH. The process was carried out in centrifugal contactors using an optimized flow-sheet involving a total of 32 stages, divided into 4 stages for extraction, 12 stages for scrubbing and 16 stages for back-extraction. Very high feed decontamination factors were obtained (Am, Cm 40 000) and the recovery of these elements was higher than 99.99%. Of the non-lanthanide fission products only Y and a small part of Ru were co-separated into the product fraction together with the lanthanides and the MA.
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