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E-Journal of Chemistry
Volume 6 (2009), Issue 4, Pages 1167-1175

Bimetal Adsorption by Cottonseed Carbon: Equlibrium and Kinetic Studies

K. Srinivasan1 and E. Sathiya2

1Department of Chemistry, College of Engineering, Anna University-CBE, Salem-636011, India
2Department of Chemistry, Annai Mathammal Snheela Engineering College, Erumapatty, Namakkal Dt. Tamilnadu, India

Received 22 February 2009; Accepted 4 April 2009

Copyright © 2009 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 simultaneous adsorption of Pb(II) and Hg(II) on cottonseed carbon (CSC) was employed for the removal of these metals from wastewater. The influence of various factors such as agitation time, pH and carbon dosage on the adsorption capacity has been studied. Langmuir and Freundlich equation could be used to interpret adsorption data. Sorption kinetics has indicated that reversible first order kinetics model could be applied with film diffusion as the controlling mechanism.