Effect of layer charge on fixation of cesium ions in smectites

Y. Onodera, T. Iwasaki, T. Ebina, H. Hayashi, K. Torii, A. Chatterjee, H. Mimura

Research output: Contribution to journalConference articlepeer-review

29 Citations (Scopus)


In order to rationalize the influence of layer charge on cesium fixation in smectite, remaining Cs+ or Na+ in cesium- or sodium-saturated smectite specimen (Cs- or Na-specimen), respectively, were examined after Ba2+ exchange using a tracer method. The location of sorbed Cs+ in smectite was also studied by X-ray photoelectron spectroscopy (XPS). A linear multiple regressive model has been used to formulate a relation between the amount of cesium left after Ba-exchange of Cs- specimen and the layer charge characteristics. A good correlation between the amount of remaining Cs and octahedral charge was observed for the Cs-specimen whereas for Na-specimen there was no viable change. From the analysis of the chemical states of sorbed-Cs by XPS, two sorption sites were proposed for the Cs-specimen. Copyright (C) 1998 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)131-140
Number of pages10
JournalJournal of Contaminant Hydrology
Issue number1-3
Publication statusPublished - 1998 Dec 15
EventProceedings of the 1997 6th International Conference on the Chemistry and Migration Behavior of Actinides and Fission Products in the Geosphere - Sendai, Jpn
Duration: 1997 Oct 261997 Oct 31


  • Cesium fixation
  • Layer charge
  • Smectite

ASJC Scopus subject areas

  • Environmental Chemistry
  • Water Science and Technology


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