Adsorption of an industrial anionic dye by modified-KSF-montmorillonite: Evaluation of the kinetic, thermodynamic and equilibrium data

被引：124
|
作者：
Silva, Marcia M. F. [1 ]
Oliveira, Michelle M. [1 ]
Avelino, Mirella C. [1 ]
Fonseca, Maria G. [1 ]
Almeida, Ramon K. S. [1 ]
Silva Filho, Edson C. [2 ]
机构：
[1] Univ Fed Paraiba, Dept Chem, BR-58059900 Joao Pessoa, Paraiba, Brazil
[2] Piaui Fed Univ, LIMAV, Teresina, Piaui, Brazil
来源：
CHEMICAL ENGINEERING JOURNAL | 2012年 / 203卷
关键词：
KSF-montmorillonite; Anionic dye; Adsorption; LOW-COST ADSORBENTS; AQUEOUS-SOLUTION; TEXTILE DYE; REMOVAL; BIOSORPTION; BENTONITE; BEHAVIOR;
D O I：
10.1016/j.cej.2012.07.009
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
KSF-montmorillonite (KSF-Na+) reacted with protonated dodecylamine resulting in an intercalated hybrid material (KSF-DP). The pristine and modified solids were characterized by using CHN elemental analysis, thermogravimetry (TG) and FTIR spectroscopy. The solids were tested for the retention of Remazol brilliant blue R from aqueous solution using batch methods. The effects of the dosage of adsorbent, the contact time, the initial dye concentration, the pH, and, the temperature at the liquid/solid interface were investigated. Both kinetic and thermodynamic parameters of the adsorption process were obtained. The data indicated that the adsorption process is an exothermic and spontaneous reaction that proceeds kinetically according to a pseudo-second-order model. The results suggest that modified KSF-montmorillonite could be employed as a low-cost material for the removal of anionic dyes from aqueous solutions. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：259 / 268
页数：10
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