Startseite Complexing power of hydro-soluble degradation products from γirradiated polyvinylchloride: influence on Eu(OH)3(s) solubility and Eu(III) speciation in neutral to alkaline environment
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Complexing power of hydro-soluble degradation products from γirradiated polyvinylchloride: influence on Eu(OH)3(s) solubility and Eu(III) speciation in neutral to alkaline environment

  • Pascal E. Reiller EMAIL logo , Elodie Fromentin , Muriel Ferry , Adeline Dannoux-Papin , Hawa Badji , Michel Tabarant und Thomas Vercouter
Veröffentlicht/Copyright: 22. März 2017
Radiochimica Acta
Aus der Zeitschrift Radiochimica Acta Band 105 Heft 8

Abstract

The complexing power of hydrosoluble degradation products (HDPs) from an alkaline hydrolysis of a 10 MGy γ-irradiated polyvinylchloride is studied. The complexation of Eu(III), as an analogue of lanthanide and actinide radionuclides at their +III oxidation state for oxygen containing functions, is evidenced both from the increasing of Eu(OH)3(s) dissolution, and from a complexometric titration by time-resolved luminescence spectroscopy. The dissolution of Eu(OH)3(s) in a simplified alkaline solution (0.3 M KOH/0.1 M NaOH) increases moderately, but significantly, with the HDPs concentration. The luminescence signal of the supernatant clearly indicates the presence of several complexed Eu(III) species. Performing a complexometric titration of Eu(III) from pH 6 by alkaline HDPs shows the formation of two different species with increasing HDPs’ concentration and pH. Operational complexation constants – based on dissolved carbon concentration – are proposed. The analyses of the spectra and luminescence decays seem to confirm the presence of two different species.

Keywords: Europium; lanthanides; actinides; irradiated polymers; hydrosoluble degradation products; cementitious nuclear wastes
Corresponding author: Dr. Pascal E. Reiller, PhD, Den – Service d’Etudes Analytiques et de Réactivité des Surfaces (SEARS), CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette CEDEX, France

Acknowledgements:

Camille Auriault and Daniel Léonço are acknowledged for their participation in the experimental dissolution and TRLS work. Soumaya Boughattas is acknowledged for the synthesis of Eu(OH)3(s). Dr. Nathalie Macé is acknowledged for her support during the TOC analyses. This work was financed by AREVA, Andra, and CEA within the framework of the COSTO project from CEA. Dr. Christine Lamouroux-Lucas is acknowledged for her strong support.

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Supplemental Material:

The online version of this article offers supplementary material (DOI: https://doi.org/10.1515/ract-2016-2691).

Received: 2016-9-1
Accepted: 2017-1-27
Published Online: 2017-3-22
Published in Print: 2017-7-26

©2017 Walter de Gruyter GmbH, Berlin/Boston

Artikel in diesem Heft

  1. Frontmatter
  2. Measurement of activation cross sections of the 27Al(n,α)24Na and 27Al(n,p)27Mg reactions with quasi-monoenergetic neutrons
  3. Luminescence of uranyl ion complexed with 2,6-pyridine dicarboxylic acid as ligand in acetonitrile medium: observation of co-luminescence
  4. Optimization of uranyl ions removal from aqueous solution by natural and modified kaolinites
  5. Stability constant determinations for technetium (IV) complexation with selected amino carboxylate ligands in high nitrate solutions
  6. Evaluation of ammonium bifluoride fusion for rapid dissolution in post-detonation nuclear forensic analysis
  7. A thermodynamic model for the solubility of HfO2(am) in the aqueous K + – HCO3 − – CO32 − –  OH − – H2O system
  8. The role of correlations in the determination of the transport properties of LaCl3 in high temperature molten eutectic LiCl–KCl
  9. Fabrication of a flexible polycarbonate/porphyrin film dosimeter for high dose dosimetry
  10. Complexing power of hydro-soluble degradation products from γirradiated polyvinylchloride: influence on Eu(OH)3(s) solubility and Eu(III) speciation in neutral to alkaline environment
https://doi.org/10.1515/ract-2016-2691
Schlagwörter für diesen Artikel
Europium; lanthanides; actinides; irradiated polymers; hydrosoluble degradation products; cementitious nuclear wastes

Artikel in diesem Heft

  1. Frontmatter
  2. Measurement of activation cross sections of the 27Al(n,α)24Na and 27Al(n,p)27Mg reactions with quasi-monoenergetic neutrons
  3. Luminescence of uranyl ion complexed with 2,6-pyridine dicarboxylic acid as ligand in acetonitrile medium: observation of co-luminescence
  4. Optimization of uranyl ions removal from aqueous solution by natural and modified kaolinites
  5. Stability constant determinations for technetium (IV) complexation with selected amino carboxylate ligands in high nitrate solutions
  6. Evaluation of ammonium bifluoride fusion for rapid dissolution in post-detonation nuclear forensic analysis
  7. A thermodynamic model for the solubility of HfO2(am) in the aqueous K + – HCO3 − – CO32 − –  OH − – H2O system
  8. The role of correlations in the determination of the transport properties of LaCl3 in high temperature molten eutectic LiCl–KCl
  9. Fabrication of a flexible polycarbonate/porphyrin film dosimeter for high dose dosimetry
  10. Complexing power of hydro-soluble degradation products from γirradiated polyvinylchloride: influence on Eu(OH)3(s) solubility and Eu(III) speciation in neutral to alkaline environment
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