Technical feasibility of the Diamex process

Conference · Tue Jul 01 00:00:00 EDT 2008

OSTI ID:21230385

Sorel, C; Montuir, M; Espinoux, D; Lorrain, B; Baron, P ^[1]

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1. CEA Va/rho, DEN/DRCP, BP 17171, Bagnols-sur-Ceze, 30207 (France)

The DIAMEX process was developed at the CEA as the first of the two-step strategy to separate trivalent actinides from trivalent lanthanides. It consists of co-extracting trivalent actinides and lanthanides using a diamide extractant, dimethyl-dioctyl-hexyl-ethoxy-malonamide (DMDOHEMA). To demonstrate the technical feasibility of this process, a test has been successfully carried out with a PUREX raffinate solution in pulsed columns and mixer settlers, which are representative of the solvent-extraction contactors that could be used at the industrial scale. At the end of the trial, the americium and curium recovery yield exceeded 99.9% with high decontamination factors. (authors)

• Research Organization: Chemical Sciences Division, Oak Ridge National Laboratory (United States)
• OSTI ID: 21230385
• Resource Relation: Conference: ISEC 2008: International Solvent Extraction Conference on Solvent Extraction: Fundamentals to Industrial Applications, Tucson, AZ (United States), 15-19 Sep 2008; Other Information: Country of input: France; 12 refs; Related Information: In: Proceedings of ISEC 2008, International Solvent Extraction Conference - Solvent Extraction: Fundamentals to Industrial Applications, by Moyer, Bruce A. (ed.), 1740 pages.
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
07 ISOTOPES AND RADIATION SOURCES
AMERICIUM
CEA
CURIUM
DIAMEX PROCESS
EXTRACTION COLUMNS
MIXER-SETTLERS
RARE EARTHS
SOLUTIONS
SOLVENT EXTRACTION