Extraction of actinides with heterocyclic dicarboxamides

  • M. Alyapyshev
  • V. Babain
  • L. Tkachenko
  • E. Kenf
  • I. Voronaev
  • D. Dar’in
  • P. Matveev
  • V. Petrov
  • S. Kalmykov
  • Y Ustynyuk


Extraction of actinides from aqueous nitric acid by three different heterocyclic dicarboxamides (2,6-pyridinedicarboxamide, 2,2′-bipyridine-6,6′-dicarboxamide and 1,10-phenanthroline-2,9-dicarboxamides) was studied. It was shown that all studied ligands extract actinides at different oxidation states (U(VI), Np(V), Pu(IV), Am(III), Cm(III)) from acidic solutions. All studied diamides extract Am(III) better than Cm(III). Et(pHexPh)ClPhen contains electron-withdrawing chlorine atoms at the positions 4 and 7 of the phenanthroline moiety (SFAm/Cm = 4–6) and possesses the highest separation factor Am(III)/Cm(III). The studied ligands possess high extraction ability to all actinides present in HLW and therefore they could be used for simultaneous extraction of actinides in the GANEX-type process.


Actinides Diamides Extraction Separation Americium Curium GANEX-process 



This work was partially financially supported by Government of Russian Federation, Grant 074-U01, by State Corporation “ROSATOM”, contract 5/5974-D-2015, and INNOPRACTICA foundation. The authors thank Dr A.Lumpov and Mrs. M. Agafonova -Moroz for providing the UV–Vis spectra.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2018

Authors and Affiliations

  • M. Alyapyshev
    • 1
  • V. Babain
    • 1
  • L. Tkachenko
    • 2
  • E. Kenf
    • 2
  • I. Voronaev
    • 2
  • D. Dar’in
    • 3
  • P. Matveev
    • 4
  • V. Petrov
    • 4
  • S. Kalmykov
    • 4
  • Y Ustynyuk
    • 4
  1. 1.ITMO UniversitySt. PetersburgRussia
  2. 2.Khlopin Radium InstituteSt. PetersburgRussia
  3. 3.Institute of ChemistrySt. Petersburg State UniversitySt. PetersburgRussia
  4. 4.Department of ChemistryM.V. Lomonosov Moscow State UniversityMoscowRussia

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