Journal of Chemistry

Journal of Chemistry / 2012 / Article

Open Access

Volume 9 |Article ID 873026 | 8 pages |

Kinetic, Thermodynamic and Equilibrium Studies on Uptake of Rhodamine B onto ZnCl2 Activated Low Cost Carbon

Received07 Jun 2011
Accepted12 Aug 2011


A carbonaceous adsorbent prepared from biomass waste like wood apple outer shell (Limonia acidissima) by ZnCl2 treatment was investigated for its efficiency in removing Rhodamine B (RDB). Influence of agitation time, adsorbent dose, dye concentration, pH and temperature were explored. Two theoretical adsorption isotherms namely Langmuir and Freundlich were used to describe the experimental results. The Langmuir adsorption capacity (Qo) was found to be 46.7 mg/g and the equilibrium parameter (RL) values indicate favourable adsorption. The experimental data were well fitted with Langmuir isotherm model and pseudo second order kinetic model. Desorption studies showed that ion exchange mechanism might be involved in the adsorption process.

Copyright © 2012 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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