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Kinetics and Thermodynamics study of Zinc Ions Adsorption onto the modified Nanobentonite

Author : Shahab. A. Nasseri, Ali .I. Yagubov, Abdolali. A. Alemi And Ali. N. Nuriev

Pages : 2222-2227
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Heavy metal pollutants are known as the most serious toxic sources. Therefore, removal of heavy metal contaminations has become the global concern. Adsorption has recognized as an appropriate method for water treatment. In this study, adsorption of zinc ions onto the Na- and Ca- forms of heat-treated nanobentonite were considered by using model solutions in static-batch mode. The modified adsorbents were characterized by emission electron microscopy (SEM) and Energy-dispersive X-ray spectroscopy (EDX). Experiments were investigated with certain characteristics such as adsorption efficiency, thermodynamics and initial concentrations (C0) in static batch conditions. The thermodynamic parameters such as ΔS°, ΔH° and ΔG° were examined in various temperature (20-60°C) The results admit strongly the adsorption process was endothermic and spontaneous.

Keywords: Modified nanobentonite, Adsorption, Heavy metal ions, Thermodynamic

Article published in International Journal of Current Engineering and Technology, Vol.6, No.6 (Dec-2016)

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