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Thermodynamics of chromium(III) adsorption onto a cation exchanger derived from saw dust of Jack wood

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Abstract

A novel cation exchanger, polymethacrylic acid-grafted saw dust (SD) with spacer group (SP) containing carboxylate functional group at the chain end (SDGPMA-SP-COOH) was prepared from saw dust of Jack wood, and its adsorption equilibrium and thermodynamics of Cr(III) ions were studied at different initial concentrations and temperatures at pH 7.0 using batch technique. Thermodynamic parameters such as change in standard free energy, ΔG 0, standard enthalpy, ΔH 0 and standard entropy, ΔS 0 were determined. The values of isosteric heat of adsorption (ΔH x ) remain constant at different surface loading of Cr(III) indicating homogeneous surface sites and the absence of lateral interaction between adsorbed ions.

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Authors and Affiliations

  1. Department of Chemistry, University of Kerala, Kariavattom, Trivandrum, 695 581, India

    T. S. Anirudhan & P. G. Radhakrishnan

Authors
  1. T. S. Anirudhan
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  2. P. G. Radhakrishnan
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Correspondence to T. S. Anirudhan.

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Anirudhan, T.S., Radhakrishnan, P.G. Thermodynamics of chromium(III) adsorption onto a cation exchanger derived from saw dust of Jack wood. Environ Chem Lett 9, 121–125 (2011). https://doi.org/10.1007/s10311-009-0255-5

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  • DOI: https://doi.org/10.1007/s10311-009-0255-5

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