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Partitioning: new solvent extraction processes for minor actinides

Objective

In the framework of the development of new Partitioning & Transmutation strategies of the nuclear wastes generated after reprocessing of spent fuels we propose to develop solvent extraction Partitioning processes of americium and curium. These elements are present in the high active effluents issuing the reprocessing of the spent fuel at the trivalent state. Consequently, their separation from these acidic effluents from the other elements (fission products), and particularly the trivalent lanthanides (Ln(III), is a difficult task. We propose to develop multi- cycle processes able to separate these elements from acidic raffinates or concentrates.

The main extractants to be developed are:
(i) the diamides,
(ii) nitrogen polydendate ligands,
(iii) acidic sulphur-bearing ligands.

Combinatorial synthesis will be used to prepare selective extractants. Basic research and process developments will be carried out for all the systems studied.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

COMMISSARIAT A L'ENERGIE ATOMIQUE
Address
Centre De La Vallee Du Rhone
30207 Bagnols-sur-ceze
France

Participants (9)

CENTRO DE INVESTIGACIONES ENERGETICAS, MEDIAMBIENTALES Y TECNOLOGICAS
Spain
Address
Avenida Complutense 22
Madrid
CHALMERS UNIVERSITY OF TECHNOLOGY
Sweden
Address
4,Kemivägenl Liason Office Cth 4
412 96 Göteborg
COMMISSION OF THE EUROPEAN COMMUNITIES
Germany
Address
Hermann-von-helmholtz Platz 1
76125 Karlsruhe
FORSCHUNGSZENTRUM JUELICH GMBH
Germany
Address
Wilhelm-johnen-straße
52425 Juelich
FORSCHUNGSZENTRUM KARLSRUHE GMBH - TECHNIK UND UMWELT
Germany
Address
Herrmann-von-helmholtz-platz 1
76344 Eggenstein-leopoldshafen
ITALIAN AGENCY FOR NEW TECHNOLOGY, ENERGY AND THE ENVIRONMENT
Italy
Address
Strada Per Crescentino 41
13040 Alice Castello
POLYTECHNIC OF MILAN
Italy
Address
Via Ponzio 34/3
20133 Milano
UNIVERSIDAD AUTONOMA DE MADRID
Spain
Address
Campus De Cantoblanco
28049 Madrid
UNIVERSITY OF READING
United Kingdom
Address
Whiteknights
RG6 2AD Reading / Silchester