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E-Journal of Chemistry
Volume 8 (2011), S1, Pages S377-S391

Removal of Copper (II) Ions from Aqueous Solutions by Adsorption with Low Cost Acid Activated Cynodon Dactylon Carbon

U. Gayathri,1 B. R. Venkatraman,2 and S. Arivoli3

1Department of Chemistry, Sengamala Thayaar Educational Trust Women’s College, Sundarakkottai, Mannargudi-614 001, Tamilnadu, India
2P.G Department of Chemistry, Periyar E.V.R.College(Autonomous), Trichy-620023, Tamil Nadu, India
3Department of Chemistry, Thiru.Vi.Ka.College, Thiruvarur, Tamilnadu, India

Received 27 January 2011; Revised 14 May 2011; Accepted 5 June 2011

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.


The main purpose of this work was to exploit low cost and efficient sorbents for the removal of copper from aqueous solution using Cynodon dactylon carbon. It was observed from the experimental results that almost 90-100% copper can be removed from the aqueous solution. Adsorption kinetics and equilibrium have been investigated as a function of initial copper ion concentration. pH, contact time and adsorbent dosage. Kinetics studies suggested that the adsorption allowed first order reaction. Equilibrium data were analyzed using Langmuir and Freundlich isotherm models. On the basis of experimental results and the model parameters, it can be concluded that the carbonaceous Cynodon dactylon is effective for the removal of copper ion from aqueous solution.