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Demonstration of a SANEX process in centrifugal contactors using the CyMe4-BTBP molecule on a genuine fuel solution

Daniel Magnusson (Institutionen för kemi- och bioteknik, Kärnkemi) ; B. Christiansen ; M. R S Foreman ; A. Geist ; J. P. Glatz ; R. Malmbeck ; G. Modolo ; D. Serrano-Purroy ; C. Sorel
Solvent Extraction and Ion Exchange (07366299). Vol. 27 (2009), 2, p. 97-106.
[Artikel, refereegranskad vetenskaplig]

Efficient recovery of minor actinides from a genuine spent fuel solution has been successfully demonstrated by the CyMe4-BTBP/DMDOHEMA extractant mixture dissolved in octanol. The continuous countercurrent process, in which actinides(III) were separated from lanthanides(III), was carried out in laboratory centrifugal contactors using an optimized flow-sheet involving a total of 16 stages. The process was divided into 9 stages for extraction from a 2 M nitric acid feed solution, 3 stages for lanthanide scrubbing, and 4 stages for actinide back-extraction. Excellent feed decontamination factors for Am (7000) and Cm (1000) were obtained and the recoveries of these elements were higher than 99.9%. More than 99.9% of the lanthanides were directed to the raffinate except Gd for which 0.32% was recovered in the product.

Nyckelord: CyMe4-BTBP process; Minor actinides; Partitioning; SANEX; Solvent extraction



Denna post skapades 2018-01-03.
CPL Pubid: 254282

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Kärnkemi (2005-2014)

Ämnesområden

Kärnkemi

Chalmers infrastruktur