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Comparative characteristics of the ion-exchange properties of natural clinoptilolites from Bulgaria and the USSR for the purpose of purification of liquid wastes from nuclear power plants. Part I: Study of the equilibrium sorption of cesium and strontium ions from solutions of different composition

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Abstract

The ion-exchange equilibrium of cesium and strontium ions on clinoptilolites from different deposits — Dzegvi and Tedzami /Georgian SSR/, Beli Plast and Beli Bair /Bulgaria/ in different cationic forms of the sorbents /natural, sodium, calcium and ammonium/ is studied. The static ion-exchange capacities are determined. The sorption isotherms are plotted and the corresponding distribution coefficients are calculated. Mechanical characteristics which are important for the assessment of the technological use of the sorbents in dynamic conditions are determined. The clinoptilolite from Beli Plast deposit has the highest capacity in comparison with the other studied zeolites. The selectivity of the clinoptilolites from Bulgarian deposits is independent of the cationic form of the sorbent while the selectivity of the Georgian clinoptilolites strongly depends on the cationic form; the selectivity of the ammonium form of Tedzami sorbent is the highest.

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References

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Authors and Affiliations

  1. V.I. Vernadsky Institute of Geochemistry and Analytical Chemistry, Academy of Sciences of the USSR, Moscow, USSR

    V. A. Nikashina, V. A. Tyurina & M. M. Senjavin

  2. Institute of Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia, Bulgaria

    G. I. Stefanov, G. D. Gradev, I. G. Stefanova & A. I. Avramova

Authors
  1. V. A. Nikashina
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  2. V. A. Tyurina
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  3. M. M. Senjavin
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  4. G. I. Stefanov
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  5. G. D. Gradev
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  6. I. G. Stefanova
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  7. A. I. Avramova
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Nikashina, V.A., Tyurina, V.A., Senjavin, M.M. et al. Comparative characteristics of the ion-exchange properties of natural clinoptilolites from Bulgaria and the USSR for the purpose of purification of liquid wastes from nuclear power plants. Part I: Study of the equilibrium sorption of cesium and strontium ions from solutions of different composition. Journal of Radioanalytical and Nuclear Chemistry Letters 105, 175–184 (1986). https://doi.org/10.1007/BF02162967

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  • DOI: https://doi.org/10.1007/BF02162967

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