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International Journal of Chemical Engineering
Volume 2016 (2016), Article ID 5809505, 11 pages
http://dx.doi.org/10.1155/2016/5809505
Research Article

Mass Transfer Studies on Adsorption of Phenol from Wastewater Using Lantana camara, Forest Waste

1Department of Chemical Engineering, Manipal Institute of Technology, Manipal 576104, India
2Department of Biotechnology, Manipal Institute of Technology, Manipal 576104, India

Received 25 July 2015; Accepted 28 January 2016

Academic Editor: Jose C. Merchuk

Copyright © 2016 C. R. Girish and V. Ramachandra Murty. 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

Adsorption is one of the important treatment methods for the removal of pollutants from wastewater. The determination of rate controlling step in the process is important in the design of the process. Therefore, in the present work, mass transfer studies were done to evaluate the rate-limiting step in the adsorption of phenol from aqueous solution onto Lantana camara. Different mass transfer models were used to find the rate-limiting step and also to find the values of external mass transfer coefficient and diffusion coefficient. The Biot number was found to investigate the importance of external mass transfer to intraparticle diffusion. From the various models studied and the Biot numbers obtained, it was found that the adsorption on Lantana camara was controlled by film diffusion. The sensitivity analysis was performed to study the significance of the model parameters on the adsorption process.