Leaching study of cesium from spent ion-exchange resins and Portland cement package

  • Z. Faiz
  • S. Fakhi
  • A. Bouih
  • R. Outayad
  • A. Benkdad
  • H. Hannache
Original Paper
First Online:
Received:
Revised:
Accepted:

Abstract

The leaching rate of 134Cs in cement has been studied. The solidification matrix by a standard Portland cement mixed with the spent ion-exchange resins was previously developed. The leaching rates from cement matrices were measured in function of pH, the immersion and curing times, the resin amounts, and 134Cs concentration. In all cases, the leaching rate was deduced from 134Cs cumulative activity measured by gamma spectrometry. The study showed that only 11.8% of total 134Cs has been leached. This fraction concentrated to the solid surface by silanols has been moved during 34 days through two mechanisms. The Langmuir and Freundlich isotherms attributed these two mechanisms at successive attacks, by water and multilayer and monolayer site formed at the interface package/water. The presence of the spent ion-exchange resins in the matrix, as waste, improves and increases 134Cs retention power in the cemented package. In fact, the fraction of 134Cs mobilized in the absence of resins (3.18 Bq/Kg) becomes negligible in the presence of 12% of resins.

Keywords

Cemented package 134Cs Spent ion-exchange resins Leaching Isotherm 
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Notes

Acknowledgements

This work was conducted in the Mixed Research Unity (UMR) context between the National Center of Science, Technology and Nuclear Energy (CNESTEN) and the University Hassan II of Casablanca (UHIIC).

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Copyright information

© Islamic Azad University (IAU) 2016

Authors and Affiliations

  1. 1.Laboratory of engineering and materials (LIMAT), Faculty of Sciences Ben M’sikUniversity Hassan II of CasablancaCasablancaMorocco
  2. 2.Laboratory of Applied Mathematics and Technologies of Information and Communication (MATIC), Faculty Polydisciplinary of Khouribga,University Hassan ISettatMorocco
  3. 3.National Center of Sciences, Technology and Nuclear Energy (CNESTN), Center for Nuclear Studies-Maamoura (CENM)RabatMorocco

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