Demonstration of a SANEX process in centrifugal contactors using the CyMe4-BTBP molecule on a genuine fuel solution
Artikel i vetenskaplig tidskrift, 2009

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.

SANEX

Partitioning

Minor actinides

Solvent extraction

CyMe4-BTBP process

Författare

Daniel Magnusson

Chalmers, Kemi- och bioteknik, Kärnkemi

B. Christiansen

European Commission Joint Research Centre, Institute for Transuranium Elements Karlsruhe

Mark Foreman

University of Reading

Chalmers

A. Geist

Karlsruher Institut für Technologie (KIT)

J. P. Glatz

European Commission Joint Research Centre, Institute for Transuranium Elements Karlsruhe

R. Malmbeck

European Commission Joint Research Centre, Institute for Transuranium Elements Karlsruhe

G. Modolo

Forschungszentrum Jülich

D. Serrano-Purroy

European Commission Joint Research Centre, Institute for Transuranium Elements Karlsruhe

C. Sorel

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

Solvent Extraction and Ion Exchange

0736-6299 (ISSN) 1532-2262 (eISSN)

Vol. 27 2 97-106

DOI

10.1080/07366290802672204