文章基本信息

标题：Kinetics and thermodynamics study of methylene blue adsorption onto Aleppo pine cones
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作者：Elmoubarki R. ; Moufti A. ; Tounsadi H. 等
期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2016
卷号：7
期号：8
页码：2869-2879
出版社：University of Mohammed Premier Oujda
摘要：In this study, the adsorption of methylene blue (MB) onto Aleppo Pine Cones (APC) powder was investigated in batch mode. Series of experiments were then conducted to study the influence of some parameters on the adsorption capacity such as adsorbent mass, pH, contact time, initial concentration of the dye and temperature. The experimental results indicate that the adsorption yield increases with an increase in the adsorbent dosage and the initial concentration of dye in the solution. Results from the effect of pH indicate that MB is preferentially adsorbed in basic medium. The adsorption yield decreases with an increase in solution temperature. The overall results showed that the adsorption kinetics of the MB onto APC is well described by the pseudo-second order kinetic model. The adsorption isotherm was described satisfactorily by the mathematical model of Langmuir with a maximum monolayer adsorption capacity of 93.57 mg/g. Furthermore, the thermodynamic study revealed that the adsorption is spontaneous and exothermic.
关键词：Aleppo pine cones; Adsorption; Dyes; Kinetics; Equilibrium; Thermodynamics