Thermodynamic and Kinetic Study of the Adsorption of Pb (II) from Aqueous Solution Using Bentonite and Activated Carbon

  • Bassim Hameed Graimed University of Baghdad
  • Ziad T. Abd Ali Department of Environmental Engineering/ University of Baghdad
Keywords: Bentonite, Activated carbon, lead ions, Adsorption, Kinetic

Abstract

The adsorption of Pb(II) ions onto bentonite and activated carbon was investigated. The effects of pH, initial adsorbent dosage, contact time and temperature were studied in batch experiments. The maximum adsorption capacities for bentonite and activated carbon were 0.0364 and 0.015 mg/mg, respectively. Thermodynamic parameters such as Gibbs free energy change, Enthalpy change and Entropy change have been calculated. These thermodynamic parameters indicated that the adsorption process was thermodynamically spontaneous under natural conditions and the adsorption was endothermic in nature. Experimental data were also tested in terms of adsorption kinetics, the results showed that the adsorption processes followed well pseudo second- order kinetics.

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Published
2013-06-30
How to Cite
Graimed, B., & Abd Ali, Z. (2013). Thermodynamic and Kinetic Study of the Adsorption of Pb (II) from Aqueous Solution Using Bentonite and Activated Carbon. Al-Khwarizmi Engineering Journal, 9(2), 48-56. Retrieved from https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/167
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Articles