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.
MAGNUSSON D.;
CHRISTIANSEN Birgit;
GLATZ Jean-Paul;
MALMBECK Rikard;
MODOLO G.;
SERRANO PURROY Daniel;
SOREL C.;
2009-02-12
TAYLOR & FRANCIS INC
JRC50410
0736-6299,
http://www.informaworld.com/smpp/content?content=a907418497,
https://publications.jrc.ec.europa.eu/repository/handle/JRC50410,
10.1080/07366290802544726,
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