文章基本信息

标题：Mathematical Modeling Of The Adsorption Of Trivalent Chromium By The Sodium Polyacrylate Beads
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作者：Ouass A. ; Ismi I. ; Elaidi H. 等
期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2017
卷号：8
期号：10
页码：3448-3456
出版社：University of Mohammed Premier Oujda
摘要：The objective of this work is thus to study the kinetics and adsorption isotherms of Chromium (III) on a superabsorbent polymer PANa (Sodium Polyacrylate). In first, the study of some parameters like contact time and metal concentration, show that the extraction efficiency reaches 80% at a concentration of chromium equal to 4 mg/L. The extraction equilibrium time decreases from 60 mn for 4 mg/L to 30 mn for raised concentrations of Cr(III). In a second step, the study of the kinetics show that the adsorption of Cr(III) onto PANa from aqueous solution is well described by the pseudo-second order kinetic model (the correlation coefficient R²>0.98). The adsorption isotherms of the adsorbent/adsorbate systems studied are described satisfactorily by the mathematical model of Langmuir. Furthermore, the isotherm study revealed that the adsorption is spontaneous and is carried out in monolayer.
关键词：Adsorption modeling; Chromium; Sodium polyacrylate; Hydrogel beads; Langmuim