Fluoride Ions Removal using Yttrium Alginate Biocomposite from an Aqueous Solution (RESEARCH NOTE)

International journal of engineering. Transactions A: basics Pub Date : 2016-12-28 DOI:10.5829/idosi.ije.2017.30.01a.01

M. Kosari, H. Sepehrian

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引用次数: 2

Abstract

Removal of fluoride ions was investigated using a new adsorbent of yttrium alginate biocomposite (YALG). Effect of various parameters such as pH, contact time, initial concentration of fluoride ions and temperature on the sorption capacity of adsorbent was studied. Performing a mathematical assessment of fluoride sorption, isotherm and kinetics models including Freundlich & Langmuir isotherms and pseudo first & second order kinetics were applied on experimental equilibrium results through this work. Isotherm analysis revealed that Langmuir model showed a better evaluation from sorption equilibrium data than Freundlich. Based on kinetics evaluation, the pseudo second-order equation was capable of fitting the sorption data satisfactorily compared to the pseudo first-order model. The maximum sorption capacity of fluoride ions (q, mg.g-1) using the YALG was found to be 147.05 mg.g-1. Regarding the thermodynamic studies and its parameters (i.e. ΔH°, ΔS° and ΔG°) it is revealed that the fluoride ions adsorption using nanoporous YALG was feasible, spontaneous and endothermic in nature.

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海藻酸钇生物复合材料去除水溶液中的氟离子(研究说明)

研究了海藻酸钇生物复合材料(YALG)对氟离子的去除效果。研究了pH、接触时间、氟离子初始浓度、温度等参数对吸附剂吸附性能的影响。对氟吸附进行数学评估，等温线和动力学模型，包括Freundlich和Langmuir等温线和伪一级和二级动力学，通过这项工作应用于实验平衡结果。等温线分析表明，Langmuir模型对吸附平衡的评价优于Freundlich模型。基于动力学评价，与拟一阶模型相比，拟二阶方程能较好地拟合吸附数据。YALG对氟离子的最大吸附量(q, mg.g-1)为147.05 mg.g-1。热力学研究及其参数(ΔH°、ΔS°和ΔG°)表明，纳米多孔YALG吸附氟离子是可行的、自发的、吸热的。

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来源期刊

International journal of engineering. Transactions A: basics

CiteScore

3.10

自引率

0.00%

发文量