Retention of Cs on zeolite, bentonite and their mixtures


Atun G., Bodur N.

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, cilt.253, sa.2, ss.275-279, 2002 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 253 Konu: 2
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1023/a:1019658011221
  • Dergi Adı: JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
  • Sayfa Sayıları: ss.275-279

Özet

The sorption behavior of cesium on zeolite and bentonite minerals and their mixtures was studied by means of a batch method and a tracer technique. All experiments were carried out in the presence of CsCl spiked with Cs-137 and NaCl as a supporting electrolyte in varying concentrations. The distribution coefficients (K) did not show significant differences at low Cs+ loadings while they decreased in the high loading region. Freundlich and D-R isotherms were applied to the adsorption data of zeolite and bentonite. Adsorption capacities and mean energies calculated from D-R isotherm parameters decreased by increasing ionic strength on both minerals. The identification of the specific uptake sites was attempted on the basis of the Freundlich isotherm. Experimentally observed distribution coefficients of Cs on two mineral mixtures were smaller than theoretically calculated values, except at the highest NaCl concentration.