Adsorption of Aniline from Aqueous Solution by KSF Montmorillonite

Abstract:

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In the present paper, the adsorption characteristics of aniline onto KSF montmorillonite from aqueous solution were investigated. Experiments were conducted at various pH values, temperatures, ionic strength and surfactant concentrations. Pseudo-first-order, pseudo-second-order and intraparticle diffusion models were adopted to investigate the rate parameters, and the pseudo-second-order equation was proved to be able to successfully predict whole process. Optimal adsorption pH was determined at 3.6. Among the selected models (linear, Langmuir, Freundlich, DR (Dubinin–Radusckevich) models), linear and DR models were found to be better fit the experimental data, which revealed the physisorption nature of the adsorption process. Meanwhile, with the increase of reaction temperatures, the adsorption capacity decreased. The results of the calculated thermodynamic parameters demonstrated that the adsorption was an exothermic, spontaneous and unfavorable process.

Info:

Periodical:

Advanced Materials Research (Volumes 356-360)

Edited by:

Hexing Li, Qunjie Xu and Daquan Zhang

Pages:

208-216

DOI:

10.4028/www.scientific.net/AMR.356-360.208

Citation:

J. Y. Zhang et al., "Adsorption of Aniline from Aqueous Solution by KSF Montmorillonite", Advanced Materials Research, Vols. 356-360, pp. 208-216, 2012

Online since:

October 2011

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Price:

$35.00

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