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    Comparison of the Extraction as a Function of Time in Two GANEX Solvents: Influence of Metal Loading, Interfacial Tension, and Density

    Year: 2013

    Journal: Solvent Extraction and Ion Exchange, Volume 31, Issue 6, 2013, 20131119

    Authors: Elin Löfström-Engdahl 1 2*, Emma Aneheim 1 2, Christian Ekberg 1 2, Mark Foreman 1 2 & Gunnar Skarnemark 1

    Organizations: 1 a Nuclear Chemistry, Department of Chemical and Biological Engineering , Chalmers University of Technology , Gothenburg , Sweden2 b Industrial Materials Recycling, Department of Chemical and Biological Engineering , Chalmers University of Technology , Gothenburg , Sweden

    Two Group ActiNide EXtraction solvents for the extraction of actinides from used nuclear fuel for transmutation purpose have been compared. The solvent studied more precisely comprises cyclohexanone, tributylphosphate, and a molecule from the bis-triazine bi-pyridine family, while the alternative utilizes di-ethyl-hexyl butyramide instead of tributylphospate. The focus of the comparison has been on the kinetics of the extraction of americium and europium, and the influence of an increased metal content on their separation factor. Both systems showed that to maintain the equilibrium separation factor up to an europium concentration of 1 mM and their SFAm/Eu is decreased with a prolonged phase contact.