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Communication Dans Un Congrès Année : 2007

Actinides by Electrochemical Methods in Molten Chlorides Using Solid Aluminium Cathode

Résumé

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.

Domaines

Génie chimique
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Dates et versions

hal-04106046 , version 1 (25-05-2023)

Identifiants

  • HAL Id : hal-04106046 , version 1
  • OATAO : 1625

Citer

Rikard Malmbeck, Laurent Cassayre, Eric Mendes, Jérôme Serp, Pavel Soucek, et al.. Actinides by Electrochemical Methods in Molten Chlorides Using Solid Aluminium Cathode. GLOBAL 2007, Sep 2007, Boise, United States. pp.0. ⟨hal-04106046⟩
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