Adsorption of anionic and cationic dyes on activated carbon from aqueous solutions: Equilibrium and kinetics

被引：208

作者：

Rodriguez, Araceli ^{[1
]}

Garcia, Juan ^{[1
]}

Ovejero, Gabriel ^{[1
]}

Mestanza, Maria ^{[1
]}

机构：

[1] Univ Complutense Madrid, Fac Ciencias Quim, Dept Ingn Quim, Grp Catalisis & Proc Separac, E-28040 Madrid, Spain

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 172卷 / 2-3期

关键词：

Adsorption; Activated carbon; Cationic and anionic dyes; Wastewater; METHYLENE-BLUE ADSORPTION; BASIC DYE; WASTE-WATER; REMOVAL; SURFACE; MECHANISM;

D O I：

10.1016/j.jhazmat.2009.07.138

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Activated carbon was utilized as adsorbent to remove anionic dye, Orange II (OII), and cationic dye, Methylene blue (MB), from aqueous solutions by adsorption. Batch experiments were conducted to study the effects of temperature (30-65 degrees C), initial concentration of adsorbate (300-500 mg L-1) and pH (3.0-9.0) on dyes adsorption. Equilibrium adsorption isotherms and kinetics were investigated. The equilibrium experimental data were analyzed by the Langmuir, Freundlich. Toth and Redlich-Peterson models. The kinetic data obtained with different carbon mass were analyzed using a pseudo-first order, pseudo-second order, intraparticle diffusion, Bangham and Chien-Clayton equations. The best results were achieved with the Langmuir isotherm equilibrium model and with the pseudo-second order kinetic model. The activated carbon was found to be very effective as adsorbent for MB and Oil from aqueous solutions. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1311 / 1320

页数：10

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