Study of malachite green adsorption by organically modified clay using a batch method

被引：116

作者：

Arellano-Cardenas, Sofia ^{[1
]}

Lopez-Cortez, Socorro ^{[1
]}

Cornejo-Mazon, Maribel ^{[1
]}

Carlos Mares-Gutierrez, Juan ^{[1
]}

机构：

[1] Escuela Nacl Ciencias Biol IPN, Dept Biofis, Mexico City 11340, DF, Mexico

来源：

APPLIED SURFACE SCIENCE | 2013年 / 280卷

关键词：

Adsorption; Malachite green; Dye; Organoclay; Modified clay; TEXTILE DYE; CATIONIC SURFACTANT; AQUEOUS-SOLUTIONS; BENTONITE; REMOVAL; EQUILIBRIUM; PHENOL; FISH;

D O I：

10.1016/j.apsusc.2013.04.097

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 of toxic dye malachite green from aqueous effluents by organically modified clay was studied in a batch system. The organoclay (OC) used was prepared by the intercalation of cationic surfactant hexadecyltrimethylammonium bromide in a Mexican montmorillonite. The effects of initial dye concentration, temperature, pH, and contact time were investigated. The OC showed a high dye removal (99.6%) from an initial dye concentration of 60 mg L-1 at pH 6 and 25 degrees C. The adsorption capacity was independent of pH and increased with the temperature. Equilibrium data were well fitted by Langmuir adsorption model. The rate of sorption was adjusted to a pseudo second-order kinetic model. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：74 / 78

页数：5

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