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Adsorption of cesium on a composite inorganic exchanger zirconium phosphate - ammonium molybdophosphate

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Abstract

The applicability of zirconium phosphate-ammonium molybdophosphate (ZrP-AMP) for the efficient removal of cesium from aqueous acidic solutions by adsorption has been investigated. The adsorption data analysis was carried out using the Freundlich, Dubinin-Raduskevich (D-R) and Langmuir isotherms for the uptake of Cs in the initial concentration range of 3.75.10-5-7.52.10-3 mol.dm-3 on the ZrP-AMP exchanger from nitric acid medium. The mean free energy (E) values for the adsorption of Cs were obtained from the D-R isotherm. Equilibrium adsorption values at different temperatures have been utilized to evaluate the change in enthalpy, entropy and free energy (ΔH°, ΔS°, ΔG°). The adsorption of cesium on the ZrP-AMP exchanger was found to be endothermic.

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Authors and Affiliations

  1. School of Chemistry, Andhra University, Visakhapatnam-, 530003, India

    G. S. Murthy, M. V. Sivaiah, S. S. Kumar & V. N. Reddy

  2. Centre for Nuclear Techniques, Andhra University, Visakhapatnam-, 530003, India

    R. M. Krishna

  3. Department of Nuclear Physics, Visakhapatnam-, 530003, India

    S. Lakshminarayana

Authors
  1. G. S. Murthy
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  2. M. V. Sivaiah
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  3. S. S. Kumar
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  4. V. N. Reddy
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  5. R. M. Krishna
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  6. S. Lakshminarayana
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Murthy, G.S., Sivaiah, M.V., Kumar, S.S. et al. Adsorption of cesium on a composite inorganic exchanger zirconium phosphate - ammonium molybdophosphate. Journal of Radioanalytical and Nuclear Chemistry 260, 109–114 (2004). https://doi.org/10.1023/B:JRNC.0000027068.15669.ad

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