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Magnesium ionophore II as an extraction agent for trivalent europium and americium

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Published/Copyright: April 7, 2016
Radiochimica Acta
From the journal Radiochimica Acta Volume 104 Issue 8

Abstract

Solvent extraction of microamounts of trivalent europium and americium into nitrobenzene by using a mixture of hydrogen dicarbollylcobaltate (H+B−) and magnesium ionophore II (L) was studied. The equilibrium data were explained assuming that the species HL+, HL2+, ML23+, and ML33+ (M3+ = Eu3+, Am3+; L=magnesium, ionophore II) are extracted into the nitrobenzene phase. Extraction and stability constants of the cationic complex species in nitrobenzene saturated with water were determined and discussed. From the experimental results it is evident that this effective magnesium ionophore II receptor for the Eu3+ and Am3+ cations could be considered as a potential extraction agent for nuclear waste treatment.

Keywords: Europium; americium; magnesium ionophore II; complexation; extraction; stability constants; water–nitrobenzene system

Acknowledgement

This work was supported by the Grant Agency of Faculty of Environmental Sciences, Czech University of Life Sciences, Prague, Project No.: 42900/1312/3114 entitled “Environmental Aspects of Sustainable Development of Society”, and by the Czech Ministry of Education, Youth, and Sports, Project MSMT No.: 20/2015.

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Received: 2015-8-25
Accepted: 2016-2-5
Published Online: 2016-4-7
Published in Print: 2016-8-1

©2016 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Cross sections for d-3H neutron interactions with samarium isotopes
  3. Decomposition studies of group 6 hexacarbonyl complexes. Part 2: Modelling of the decomposition process
  4. Recovery of Ra-223 from natural thorium irradiated by protons
  5. Synthesis of ordered mesoporous uranium dioxide by a nanocasting route
  6. Complexation of Bi3+, Ac3+, Y3+, Lu3+, La3+ and Eu3+ with benzo-diaza-crown ether with carboxylic pendant arms
  7. Magnesium ionophore II as an extraction agent for trivalent europium and americium
  8. Behavior of Cs in Grimsel granodiorite: sorption on main minerals and crushed rock
  9. Issues concerning the determination of solubility products of sparingly soluble crystalline solids: solubility of HfO2(cr)
  10. Langmuir hydrogen dissociation approach in radiolabeling carbon nanotubes and graphene oxide
https://doi.org/10.1515/ract-2015-2500
Keywords for this article
Europium; americium; magnesium ionophore II; complexation; extraction; stability constants; water–nitrobenzene system

Articles in the same Issue

  1. Frontmatter
  2. Cross sections for d-3H neutron interactions with samarium isotopes
  3. Decomposition studies of group 6 hexacarbonyl complexes. Part 2: Modelling of the decomposition process
  4. Recovery of Ra-223 from natural thorium irradiated by protons
  5. Synthesis of ordered mesoporous uranium dioxide by a nanocasting route
  6. Complexation of Bi3+, Ac3+, Y3+, Lu3+, La3+ and Eu3+ with benzo-diaza-crown ether with carboxylic pendant arms
  7. Magnesium ionophore II as an extraction agent for trivalent europium and americium
  8. Behavior of Cs in Grimsel granodiorite: sorption on main minerals and crushed rock
  9. Issues concerning the determination of solubility products of sparingly soluble crystalline solids: solubility of HfO2(cr)
  10. Langmuir hydrogen dissociation approach in radiolabeling carbon nanotubes and graphene oxide
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