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Journal of Radioanalytical and Nuclear Chemistry

, Volume 270, Issue 3, pp 495–505 | Cite as

Sorption of europium on TiO2 and cement at high Ph in the presence of organic ligands

  • M. Dario
  • M. Molera
  • B. Allard
Article

Summary

Organic substances present in radioactive waste lower the sorption of metal ions at the high pH in cement matrices and, hence, enhance their possible migration. The aim of this study was to develop a method to compare organic substances or their degradation products with respect to what extent they affect metal sorption. Batch sorption studies were performed with cement or TiO2 as solid phase and Eu(III) as a model element for trivalent lanthanides and actinides at pH 12.5 (representative of a cement waste matrix during the first approximately 100,000 years). Different kinds of ligands were studied in a broad concentration range, e.g., organic acids, cement additives, cleaning agents and degradation products from ion-exchange resin.

Keywords

Total Organic Carbon Fulvic Acid Ligand Concentration Gluconic Acid Sorption Experiment 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag/Akadémiai Kiadó 2006

Authors and Affiliations

  • M. Dario
    • 1
  • M. Molera
    • 2
  • B. Allard
    • 3
  1. 1.Department of Water and Environmental Studies, Linköping University
  2. 2.CTM Centre Tecnol?gic, ?rea de Tecnologia Ambiental
  3. 3.MTM Research Centre, Örebro University

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