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Description of heterogeneity of the sorbent surface on the basis of adsorption kinetic data

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Abstract

The kinetics of adsorption of Rb+ and Cs+ ions on different non-polarized and polarized active carbons at temperatures of 25, 35, 45, and 65 °C was investigated. The obtained results were processed using the equations of the pseudo-first- and pseudo-second-order models. The pseudo-second-order model better describes the adsorption of alkaline metal ions on the carbons studied. The kinetic dependences of three types reflecting heterogeneity of the sorbent surface were revealed on the basis of the theoretical analysis of sorption systems.

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Authors and Affiliations

  1. Institute for Geothermal Research, Daghestan Scientific Center of the Russian Academy of Sciences, 39-a prosp. Shamilya, 367030, Makhachkala, Russian Federation

    D. A. Sveshnikova

  2. Analytical Shared Center of Scientific Equipment, Daghestan Scientific Center of the Russian Academy of Sciences, 39-a prosp. Shamilya, 367030, Makhachkala, Russian Federation

    D. A. Sveshnikova

  3. V. I. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, 19 ul. Kosygina, 119991, Moscow, Russian Federation

    R. Kh. Khamizov

Authors
  1. D. A. Sveshnikova
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  2. R. Kh. Khamizov
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Correspondence to D. A. Sveshnikova.

Additional information

Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 0991–0996, June, 2018.

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Sveshnikova, D.A., Khamizov, R.K. Description of heterogeneity of the sorbent surface on the basis of adsorption kinetic data. Russ Chem Bull 67, 991–996 (2018). https://doi.org/10.1007/s11172-018-2169-5

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  • DOI: https://doi.org/10.1007/s11172-018-2169-5

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