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dc.contributor.authorCOCONAR O.en_GB
dc.contributor.authorDOUYERE N.en_GB
dc.contributor.authorGLATZ JEAN-PAULen_GB
dc.contributor.authorLACQUEMENT J.en_GB
dc.contributor.authorMALMBECK RIKARDen_GB
dc.contributor.authorSERP Jeromeen_GB
dc.identifier.citationNUCLEAR SCIENCE AND ENGINEERING vol. 153 p. 253-261en_GB
dc.description.abstractThermodynamic calculations have shown that aluminum is the most promising metallic solvent or support for the separation of actinides (An) from lanthanides (Ln). In molten fluoride salt, the technique of reductive extraction is under development in which the separation is based on different distributions of An and Ln between the salt and metallic Al phases. In this process molten aluminum alloy acts as both a reductant and a solvent into which the actinides are selectively extracted. It was demonstrated that a one-stage reductive extraction process, using a concentrated solution, allows a recovery of more than 99.3% of Pu and Am. In addition excellent separation factors between Pu and Ln well above 103 were obtained. In molten chloride media similar separations are developed by constant current electrorefining between a metallic alloy fuel (U60Pu20-Zr10 Am2Nd3.5Y0.5Ce0.5Gd0.5) and an Al solid cathode. In a series of demonstration experiments, almost 25 g of metallic fuel was reprocessed and actinides collected as An-Al alloys on the cathode. Analysis of the An-Al deposits confirmed that an excellent An/Ln separation (An/Ln mass ratio_ 2400) had been obtained. These results show that Al is a very promising material to be used in pyrochemical reprocessing of actinides.en_GB
dc.description.sponsorshipJRC.E.4-Nuclear fuelsen_GB
dc.titlePromising Pyrochemical Actinides / Lanthanides Separation Processes Using Aluminiumen_GB
dc.typeArticles in periodicals and booksen_GB
JRC Directorate:Nuclear Safety and Security

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