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Radiochimica Acta

International Journal for chemical aspects of nuclear science and technology

Ed. by Qaim, Syed M.

12 Issues per year

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Volume 101, Issue 3 (Mar 2013)


Development and demonstration of a new SANEX Partitioning Process for selective actinide(III)/lanthanide(III) separation using a mixture of CyMe4BTBP and TODGA

Giuseppe Modolo / A. Wilden
  • Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, Jülich, Deutschland
/ H. Daniels
  • Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung, Jülich, Deutschland
/ Andreas Geist
  • Karlsruher Institut für Technologie (KIT), Institut für Nukleare Entsorgung (INE), Karlsruhe, Deutschland
/ Daniel Magnusson
  • Karlsruher Institut für Technologie (KIT), Institut für Nukleare Entsorgung (INE), Karlsruhe, Deutschland
/ Rikard Malmbeck
  • European Commission JRC, Institute for Transuranium Elements (ITU), Karlsruhe, Deutschland
Published Online: 2013-01-28 | DOI: https://doi.org/10.1524/ract.2013.2016


Within the framework of the European collaborative project ACSEPT, a new SANEX partitioning process was developed at Forschungszentrum Jülich for the separation of the trivalent minor actinides americium, curium and californium from lanthanide fission products in spent nuclear fuels. The development is based on batch solvent extraction studies, single-centrifugal contactor tests and on flow-sheet design by computer code calculations. The used solvent is composed of 6,6´-bis(5,5,8,8-tetramethyl-5,6,7,8-tetrahydrobenzo-[1,2-4]trizazin-3-yl)-[2,2´]-bipyridine (CyMe4BTBP) and N,N,N´,N´-tetraoctyldiglycolamide (TODGA) dissolved in n-octanol. A spiked continuous counter-current test was carried out in miniature centrifugal contactors with the aid of a 20-stage flow-sheet consisting of 12 extraction, 4 scrubbing and 4 stripping stages. A product fraction containing more than 99.9% of the trivalent actinides Am(III), Cm(III) and Cf(III) was obtained. High product/feed decontamination factors >1000 were achieved for these actinides. The trivalent lanthanides were directed to the raffinate of the process with the actinide (III) product stream being contaminated with less than 0.5 mass-% in the initial lanthanides.

Keywords: SANEX; Minor actinides; Americium; Curium; Partitioning

About the article

* Correspondence address: Forschungszentrum Jülich GmbH, Institute for Energy and Climate Research, IEK-6, Nuclear Waste Management and Reactor Safety, 52425 Jülich, Deutschland,

Published Online: 2013-01-28

Published in Print: 2013-03-01

Citation Information: Radiochimica Acta International journal for chemical aspects of nuclear science and technology, ISSN (Print) 2193-3405 , DOI: https://doi.org/10.1524/ract.2013.2016. Export Citation

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