文章基本信息

标题：Ability of Moroccan Natural Phosphates to Remove Textile Dyes from Aqueous Solutions
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作者：H. El Boujaady ; A. EL Bakri ; M. Mourabet 等
期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2019
卷号：10
期号：3
页码：1-12
出版社：University of Mohammed Premier Oujda
摘要：The paper reports on the adsorption of Dyes from aqueous solution onto treated and Natural Moroccan Phosphates. Adsorption tests were realized in static mode .The adsorption of both Dyes, Reactive Yellow 4 (RY4) and direct Yellow 28 (DY28), from aqueous solution onto phosphate rocks of Khouribga and Oued-Zem regions was investigated. Phosphate rocks before and after activation was characterized using X-ray powder diffraction XRD, X -ray fluorescence (XRF), point of zero charge (pH PZC) and Infrared absorption spectroscopy FT-IR. The experimental data were analyzed by using three kinetic models: the pseudo first order, pseudo second order and intraparticle diffusion models. The kinetic study shows that equilibrium is quick. The kinetic data were best described by the pseudo second-order model (R2 ≥ 0.9999). The amount of the dye adsorbed increases with the mass of adsorbent. The adsorption process was pHdependent with a high adsorption capacity at pH 4.
关键词：Adsorption; Phosphate rocks ; Reactive Yellow 4; Direct Yellow 28; Equilibrum;