Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/75477
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Type: Journal article
Title: An investigation on the adsorption of acid dyes on bentonite based composite adsorbent
Author: Qiao, S.
Hu, Q.
Haghseresht, F.
Hu, X.
Lu, G.
Citation: Separation and Purification Technology, 2009; 67(2):218-225
Publisher: Elsevier Science BV
Issue Date: 2009
ISSN: 1383-5866
1873-3794
Statement of
Responsibility: 
Shizhang Qiao, Qiuhong Hu, Fouad Haghseresht, Xijun Hu, Gao Qing (Max) Lu
Abstract: We report the adsorption study of two commercial dyes, Acid Red 18 (AR18) and Acid Yellow 23 (AY23), onto bentonite based composite adsorbent from aqueous solution. The modified bentonite adsorbent was developed with the expectation to better adsorb anionic dyes. Single dye adsorption equilibrium was measured and the experimental data was analysed by the Langmuir, Freundlich and Redlich-Peterson isotherms. The results indicate that the Redlich-Peterson model provides the best correlation of the experimental data. The adsorption capacities estimated from the Langmuir model for AR18 and AY23 were at 69.8 and 75.4 mg/g, respectively. Binary dye adsorption was also investigated. The results reveal that the multicomponent nature of the dye wastewater introduces additional complications to the adsorption process. Many new factors need to be taken into account, including the interactions between the adsorbate molecules, the variation in adsorption affinity, and the fraction of adsorption sites being shared by each adsorbate. © 2009 Elsevier B.V. All rights reserved.
Keywords: Clay
Adsorption
Dye
Remediation
Rights: © 2009 Elsevier B.V. All rights reserved.
DOI: 10.1016/j.seppur.2009.03.012
Published version: http://dx.doi.org/10.1016/j.seppur.2009.03.012
Appears in Collections:Aurora harvest 4
Chemical Engineering publications

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