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Solvent Extraction and Ion Exchange Volume 31, 2013 - Issue 6
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Original Articles

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

Elin Löfström-Engdahl Nuclear Chemistry, Department of Chemical and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden; Industrial Materials Recycling, Department of Chemical and Biological Engineering, Chalmers University of Technology, Gothenburg, SwedenCorrespondence[email protected]
,
Emma Aneheim Nuclear Chemistry, Department of Chemical and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden; Industrial Materials Recycling, Department of Chemical and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
,
Christian Ekberg Nuclear Chemistry, Department of Chemical and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden; Industrial Materials Recycling, Department of Chemical and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
,
Mark Foreman Nuclear Chemistry, Department of Chemical and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden; Industrial Materials Recycling, Department of Chemical and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
&
Gunnar Skarnemark Nuclear Chemistry, Department of Chemical and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
Pages 604-616 | Published online: 05 Sep 2013
 
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Abstract

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.

ACKNOWLEDGMENTS

Dr. Staffan Wall (University of Gothenburg) is acknowledged for the supplying of a du Nouy ring. The Swedish nuclear Fuel and waste management company (SKB) and the European Union FP7 project ACSEPT (project number: 211267) is acknowledged for the funding of this work.

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