Removal of Congo Red from Aqueous Solution by Anion Exchange Membrane (EBTAC): Adsorption Kinetics and Themodynamics

被引：93
|
作者：
Khan, Muhammad Imran [1 ,4 ]
Akhtar, Shahbaz [1 ]
Zafar, Shagufta [1 ]
Shaheen, Aqeela [1 ]
Khan, Muhammad Ali [2 ]
Luque, Rafael [3 ]
Rehman, Aziz Ur [1 ]
机构：
[1] Islamia Univ Bahawalpur, Dept Chem, Bahawalpur 63000, Pakistan
[2] Chinese Acad Sci, Fujian Inst Res Struct Matter, Fuzhou 350002, Peoples R China
[3] Univ Cordoba, Dept, E-14014 Cordoba, Spain
[4] Univ Sci & Technol China, Sch Chem & Mat Sci, Hefei 230026, Anhui, Peoples R China
来源：
MATERIALS | 2015年 / 8卷 / 07期
关键词：
adsorption; congo red; anion exchange membrane; Kinetics; thermodynamics; WASTE-WATER; ACTIVATED CARBON; METHYLENE-BLUE; REACTIVE DYES; NANOFILTRATION MEMBRANES; MALACHITE GREEN; COLOR REMOVAL; HUMIC-ACID; RICE HUSK; CHITOSAN;
D O I：
10.3390/ma8074147
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The adsorption behavior of anionic dye congo red (CR) from aqueous solutions using an anion exchange membrane (EBTAC) has been investigated at room temperature. The effect of several factors including contact time, membrane dosage, ionic strength and temperature were studied. Kinetic models, namely pseudo-first-order and pseudo-second-order, liquid film diffusion and Elovich models as well as Bangham and modified freundlich Equations, were employed to evaluate the experimental results. Parameters such as adsorption capacities, rate constant and related correlation coefficients for every model were calculated and discussed. The adsorption of CR on anion exchange membranes followed pseudo-second-order Kinetics. Thermodynamic parameters, namely changes in Gibbs free energy (G degrees), enthalpy (H degrees) and entropy (S degrees) were calculated for the adsorption of congo red, indicating an exothermic process.
引用
收藏
页码：4147 / 4161
页数：15
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