DIAMEX-SANEX Solvent Behavior under Continuous Degradation and Regeneration Operation

Conference · Sun Jul 01 04:00:00 EDT 2007

OSTI ID:20979780

Bisel, I; Cames, B; Faucon, M; Rudloff, D; Saucerotte, B ^[1]

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1. CEA Marcoule - DRCP/SCPS/LCSE-LPCP, BP 17171, Bagnols-sur-Ceze, 30207 cedex (France)

The DIAMEX-SANEX process using the solvent HDEHP/DMDOHEMA/TPH was developed to manage minor actinide separation from lanthanides. The solvent stability as regard radiolysis and acidic hydrolysis has been studied both through batch tests and long term evolution in the MARCEL {gamma}-irradiation, involving alkali treatments. Most degradation products have been identified and quantified. However, unlike batch studies, there was no formation or accumulation of 'light' amide and/or amine and/or acidic compounds in the solvent when the flowsheet was tested. In these experimental conditions, remaining degradation products (monoamide, acidic amide and secondary diamide) do not affect the process performance. (authors)

• Research Organization: American Nuclear Society, 555 North Kensington Avenue, La Grange Park, IL 60526 (United States)
• OSTI ID: 20979780
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
ACTINIDES
AMINES
GAMMA RADIATION
HDEHP
HYDROLYSIS
IRRADIATION
PERFORMANCE
RADIOLYSIS
RARE EARTHS
REPROCESSING
SOLVENTS