Authors
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Irena Ilić
University of Belgrade – Institute of General and Physical Chemistry
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Nataša Jović-Jovičić
University of Belgrade – Institute of Chemistry, Technology and Metallurgy, Center for Catalysis and Chemical Engineering
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Predrag Banković
University of Belgrade – Institute of Chemistry, Technology and Metallurgy, Center for Catalysis and Chemical Engineering
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Zorica Mojović
University of Belgrade – Institute of Chemistry, Technology and Metallurgy, Center for Catalysis and Chemical Engineering
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Davor Lončarević
University of Belgrade – Institute of Chemistry, Technology and Metallurgy, Center for Catalysis and Chemical Engineering
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Ivan Gržetić
University of Belgrade – Faculty of Chemistry
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Aleksandra Milutinović-Nikolić
University of Belgrade – Institute of Chemistry, Technology and Metallurgy, Center for Catalysis and Chemical Engineering
Abstract
Montmorillonite (Mt) and acid modified montmorillonite (MtA) were tested as nicotine adsorbents. The samples were characterized using FT-IR spectroscopy and low temperature nitrogen physisorption. Nicotine adsorption was performed with respect to contact time, pH and initial nicotine concentration. The kinetics of adsorption obeyed the pseudo-second-order kinetics. The optimal pH values for nicotine adsorption were 6 and 9 for Mt and MtA, respectively. The isotherms related to adsorption on Mt at pH = 6 and 9 as well as for MtA at pH=6 were best fitted with Sips isotherm model, while adsorption onto MtA at pH=9 obeyed Langmuir isotherm model.
