Title: A review of the demonstration of innovative solvent extraction processes for the recovery of trivalent minor actinides from PUREX raffinate
Authors: GIUSEPPE ModoloWILDEN AndreasGEIST AndreasMAGNUSSON DanielMALMBECK Rikard
Citation: RADIOCHIMICA ACTA vol. 100 p. 715 -725
Publisher: OLDENBOURG VERLAG
Publication Year: 2012
JRC Publication N°: JRC76530
ISSN: 0033-8230
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC76530
DOI: DOI 10.1524/ract.2012.1962
Type: Articles in Journals
Abstract: The selective partitioning (P) of long-lived minor actinides fromhighly active waste solutions and their transmutation (T) to short-lived or stable isotopes by nuclear reactions will reduce the long-term hazard of the high-level waste and significantly shorten the time needed to ensure their safe confinement in a repository. The present paper summarizes the on-going research activities at Forschungszentrum Jülich (FZJ), Karlsruher Institut für Technologie (KIT) and Institute for Transuranium Elements (ITU) in the field of actinide partitioning using innovative solvent extraction processes. European research over the last few decades, i.e. in the NEWPART, PARTNEW and EUROPART programmes, has resulted in the development of multi-cycle processes for minor actinide partitioning. These multi-cycle processes are based on the co-separation of trivalent actinides and lanthanides (e.g. by the DIAMEX process), followed by the subsequent actinide(III)/lanthanide(III) group separation in the SANEX process. The current direction of research for the development of innovative processes within the recent European ACSEPT project is discussed additionally. This paper is focused on the development of flow-sheets for recovery of americium and curium from highly active waste solutions. The flow-sheets are verified by demonstration processes, in centrifugal contactors, using synthetic or genuine fuel solutions. The feasibility of the processes is also discussed.
JRC Institute:Institute for Transuranium Elements

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