Immobilization of Lead(II) Ions on Coal – A Thermodynamic View

Authors

  • B. Taraba Faculty of Science, University of Ostrava, Ostrava
  • P. Veselá Faculty of Science, University of Ostrava, Ostrava

Keywords:

adsorption thermodynamics, calorimetry, lead(II) ions, natural coal

Abstract

Immobilization of Pb(II) ions from aqueous solutions on two types of coals and activated carbon was investiga­ted at 30, 60 and 80 °C. Based on the thermodynamic ana­lysis of the experimental data, changes in Gibbs energy, enthalpy and entropy of the adsorption were evaluated. The calculated values of the adsorption enthalpy were compared with Pb(II) adsorption heats determined experimentally using calorimetric measurements. Thus, noteworthy differences between the calculated and measured va­lues were found for coal while for the activated carbon, the values were comparable. The discrepancy may be due to different mechanisms of the Pb(II) immobilization.

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Published

2012-11-15

How to Cite

Taraba, B., & Veselá, P. (2012). Immobilization of Lead(II) Ions on Coal – A Thermodynamic View. Chemické Listy, 106(11), 1081–1085. Retrieved from http://w.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/820

Issue

Vol. 106 No. 11 (2012)

Section

Articles

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