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E-Journal of Chemistry
Volume 7, S1, Pages S175-S184

Film and Pore Diffusion Modeling for Adsorption of Reactive Red 2 from Aqueous Solution on to Activated Carbon Preparedfrom Bio-Diesel Industrial Waste

S. Karthikeyan,1,2 B. Sivakumar,2 and N. Sivakumar1,2

1Department of Chemistry, Chikkanna Government Arts College, Tirupur, Tamilnadu, India
2Department of Chemistry, Angel College of Engineering and Technology, Tirupur, Tamilnadu, India

Received 12 March 2010; Accepted 23 May 2010

Copyright © 2010 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.


The bio-diesel industrial waste, Pongamia pinnata seed shell was utilized as a potential adsorbent for the toxic textile dye ‘Reactive Red 2’. Preliminary information was gathered by batch mode contact time adsorption studies, which include effect of pH, contact time, dye concentration and temperature. Plausible mechanism of the on going adsorption process and thermodynamic parameters involved were obtained by carrying out kinetic measurements. To identify whether the on going process is particle diffusion or film diffusion, the treatment given by Boyd and Reichenberg was employed.