Removal of Direct Yellow-12 Dye from Water by Adsorption on Activated Carbon Prepared from <i>Ficus Racemosa</i> L.

Revathi, G.; Ramalingam, S.; Subramaniam, P.; Ganapathi, A.

doi:https://doi.org/10.1155/2011/902421

Journal of Chemistry

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Volume 8 | Article ID 902421 | https://doi.org/10.1155/2011/902421

Removal of Direct Yellow-12 Dye from Water by Adsorption on Activated Carbon Prepared from Ficus Racemosa L.

G. Revathi,¹S. Ramalingam,²P. Subramaniam,³and A. Ganapathi⁴

Received18 Oct 2010

Revised20 Feb 2011

Accepted28 Feb 2011

Abstract

The adsorption of direct yellow-12 dye (DY-12) by Atti leaf (Ficus racemosa) powder carbon (ATC) was carried out by varying the parameters such as agitation time, dye concentration, adsorbent dose, pH and temperature. Equilibrium adsorption data followed both Langmuir and Freundlich isotherms. Adsorption followed second-order kinetics. The adsorption capacity was found to be 6.7 mg dye per gram of the adsorbent. Acidic pH was favorable for the adsorption of DY-12. Desorption studies suggest that chemisorptions might be the major mode of adsorption.

Copyright

Copyright © 2011 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.

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