Adsorption of Pyridine onto Activated Montmorillonite Clays: Effect Factors, Adsorption Behavior and Mechanism Study
Adsorption of Pyridine onto Activated Montmorillonite Clays: Effect Factors, Adsorption Behavior and Mechanism Study作者机构：Laboratoire Matériaux Catalyse Environnement et Méthodes Analytiques (MCEMA) EDST FS Université Libanaise Campus Hariri Hadath Beyrouth Lebanon Laboratoire des Etudes Appliquées au Développement Durable et Energie Renouvelable (LEADDER) EDST Université Libanaise Campus Hariri Hadath Beyrouth Lebanon Université de Strasbourg Université de Haute Alsace Axe Matériaux à Porosité Contrô lée (MPC) Institut de Science des Matériaux de Mulhouse (IS2M) UMR CNRS 7361 ENSCMu 3 bis rue Alfred Werner Mulhouse Cedex France DICAAR-Dipartimento di Ingegneria Civile Ambientale e Architecttura Università de Cagliari Cagliari Italy
出 版 物：《American Journal of Analytical Chemistry》 (美国分析化学（英文）)
年 卷 期：2018年第9卷第10期
页 面：464-481页
主 题：Adsorption Pyridine Montmorillonite Chemical Treatment Surface Properties
摘 要：Activated Montmorillonite was applied for the sorption of pyridine as a health-toxic substance. Fourier-transform Infrared spectroscopy (FTIR), zeta potential analysis, thermogravimetric analysis (TGA), N2 physisorption analysis and X-ray diffraction (XRD) method were used to investigate the structure and composition of Montmorillonite. The batch sorption system was used to study the effect of different parameters on the adsorption. Results had shown that neutral pH had a significant effect on the sorption of pyridine;thermodynamic calculations indicated that the adsorption of pyridine over Montmorillonite was exothermic reaction and the equilibrium capacity was slightly increased by using H2SO4 as activating agent by comparison with that obtained by using HCl and H3PO4. Fitting the experimental data to isotherms models indicated that the experimental data were well fitted by Fowler Guggenheim isotherm models. Finally the results obtained by FTIR and TGA proved that the relative affinity of the pyridine toward the Montmorillonite was related to the electron donor-acceptor complexes that were formed between the basic sites (nitrogen or oxygen) and hydrogens (acidic site).
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