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Journal of Radioanalytical and Nuclear Chemistry

, Volume 314, Issue 3, pp 2531–2538 | Cite as

Modified diglycolamides for grouped actinide separation

  • Rikard MalmbeckEmail author
  • Daniel Magnusson
  • Andreas Geist
Article

Abstract

The EURO-grouped actinide extraction process has been developed to co-separate transuranic actinide elements from spent nuclear fuel, based on an organic solvent composed of two extractants, a diglycolamide (TODGA) and a malonamide (DMDOHEMA). This work aims to simplify the organic formulation, replacing the two extractants with a single modified diglycolamide. Batch experiments were carried out with the new formulation, investigating the extraction behaviour of transuranic elements and important FPs under high Pu loading. The solvent had a Pu loading capacity of > 30 g/L and yielded low distribution ratios for problematic elements, i.e., Sr, Zr, Mo and Fe for acidities up to 2 M HNO3. Although further optimization is needed, the tested molecule is a very promising candidate for a simplified organic solvent for this type of separation.

Keywords

GANEX Solvent extraction TODGA Modified DGA 

Notes

Acknowledgements

The authors gratefully acknowledge financial support from the EU GENIORS project and Åforsk foundation.

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2017

Authors and Affiliations

  1. 1.Joint Research Centre-JRC, Directorate G, Nuclear Safety and SecurityEuropean CommissionKarlsruheGermany
  2. 2.AF Industry ABGöteborgSweden
  3. 3.Karlsruhe Institute of Technology (KIT)Institute for Nuclear Waste Disposal (INE)KarlsruheGermany

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