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Journal of Analytical Methods in Chemistry
Volume 2012, Article ID 405980, 8 pages
http://dx.doi.org/10.1155/2012/405980
Research Article

Equilibrium, Thermodynamics, and Kinetic Sorption Studies for the Removal of Coomassie Brilliant Blue on Wheat Bran as a Low-Cost Adsorbent

1Institute of Chemistry, University of Punjab, Lahore, Pakistan
2Institute of Chemical Technology & Analytics, Vienna University of Technology, 1060 Wien, Austria

Received 15 November 2011; Revised 12 January 2012; Accepted 16 January 2012

Academic Editor: Selhan Karagoz

Copyright © 2012 Sadia Ata et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The sorption studies of coomassie brilliant blue (CBB) from aqueous solution have been carried out on wheat bran (WB). Coomassie brilliant blue on wheat bran was used to study the adsorption behavior under various parameters such as pH, dosage amount, and contact time. It was observed that under optimized conditions up to 95.70% dye could be removed from solution onto WB. Langmuir and Freundlich adsorption isotherms were used to elaborate the results. Freundlich model was found to be fitted well and favored multilayer adsorption. The Freundlich constants n and KF were determined as 0.53 and 2.5×10-4. Thermodynamic parameters such as ???, ???, and ??? studied were taking into account, showed spontaneous and favorable reaction for coomassie brilliant blue on wheat bran. The maximum adsorption capacity ???? was found to be 6.410?mg/g. The investigations show that non treated WB is a low-cost adsorbent for the removal of dyes from textile industry effluents.