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E-Journal of Chemistry
Volume 9, Issue 3, Pages 1266-1275
http://dx.doi.org/10.1155/2012/415234

Application of Polyaniline Nano Composite for the Adsorption of Acid Dye from Aqueous Solutions

1Department of Chemistry, Al-Ameen Engineering College, Erode, Tamilnadu-638 104, India
2Department of Chemistry, Kongu Engineering College, Perundurai, Erode, Tamilnadu- 638 052, India
3Department of Chemistry, Arignar Anna Government Arts College, Namakkal, Tamilnadu- 637 002, India

Received 28 August 2011; Accepted 27 October 2011

Copyright © 2012 Hindawi Publishing Corporation. 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

In this research, Polyaniline coated sawdust (Polyaniline nano composite) was synthesized via direct chemical polymerization and used as an adsorbent for the removal of acid dye (Acid Violet 49) from aqueous solutions. The effect of some important parameters such as pH, initial concentration of dye, contact time and temperature on the removal efficiency was investigated in batch adsorption system. The adsorption capacity of PAC was high (96.84 %) at a pH of 3-4. The experimental data fitted well for pseudo second order model. Langmuir model is more appropriate to explain the nature of adsorption with high correlation coefficient. The Energy of activation from arrehenius plot suggested that the adsorption of AV49 onto PAC involves physisorption mechanism.