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Actinides by Electrochemical Methods in Molten Chlorides Using Solid Aluminium Cathode

Malmbeck, Rikard and Cassayre, Laurent and Mendes, Eric and Serp, Jérôme and Soucek, Pavel and Glatz, Jean-Paul Actinides by Electrochemical Methods in Molten Chlorides Using Solid Aluminium Cathode. (2007) In: GLOBAL 2007, 9-13 Sep 2007, Boise, USA .

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Official URL: http://nuclear.inl.gov/global07/

Abstract

An electrorefining process in molten chloride salts is being developed at ITU to reprocess the spent nuclear fuel. According to the thermochemical properties of thesystem, aluminium is the most promising electrode material for the separation of actinides (An) from lanthanides (Ln). The actinides are selectively reduced from the fission products and stabilized by the formation of solid and compact actinide-aluminium alloys with the reactive cathode material. In this work, the maximum loading of aluminium with actinides was investigated by potentiostatic and galvanostatic electrorefining of U-Pu- Zr alloys. A very high aluminium capacity was achieved, as the average loading was 1.6 g of U and Pu into 1 g of aluminium and the maximum achieved loading was 2.3 g. For recovery of the actinides from aluminium, a process based on chlorination and a subsequent sublimation of AlCl3 is proposed.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > European Institute for Energy Research - EIFER (GERMANY)
Laboratory name:
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Deposited By: Hélène Dubernard

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