Equilibrium and kinetic data and process design for adsorption of Congo Red onto bentonite

被引：364

作者：

Bulut, Emrah ^{[1
]}

Oezacar, Mahmut ^{[1
]}

Sengil, I. Ayhan ^{[2
]}

机构：

[1] Sakarya Univ, Sci & Arts Fac, Dept Chem, TR-54187 Sakarya, Turkey

[2] Sakarya Univ, Fac Engn, Dept Environm Engn, TR-54187 Sakarya, Turkey

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2008年 / 154卷 / 1-3期

关键词：

Congo Red; bentonite; adsorption kinetics and isotherm; batch adsorber design;

D O I：

10.1016/j.jhazmat.2007.10.071

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The adsorption of Congo Red onto bentonite in a batch adsorber has been studied. Four kinetic models, the pseudo first- and second-order equations, the Elovich equation and the intraparticle diffusion equation, were selected to follow the adsorption process. Kinetic parameters; rate constants, equilibrium adsorption capacities and correlation coefficients, for each kinetic equation were calculated and discussed. It was shown that the adsorption of Congo Red onto bentonite could be described by the pseudo second-order equation. The experimental isotherm data were analyzed using the Langmuir, Freundlich and Temkin equations. Adsorption of Congo Red onto bentonite followed the Langmuir isotherm. A single stage batch adsorber was designed for different adsorbent mass/treated effluent volume ratios using the Langmuir isotherm. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：613 / 622

页数：10

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