Removal of Malachite Green from Aqueous Solution by Activated Carbon Developed from Cocoa (Theobroma cacao) Shell: Kinetic and Equilibrium Studies

C. Theivarasu¹, S. Mylsamy¹ and N. Sivakumar²

¹Department of Chemistry, PSG College of Technology, Coimbatore - 641 004 (India).

²Department of Chemistry, Chikkana Arts College, Tirupur- 641 602 (India).

ABSTRACT:

The removal of Malachite Green (MG) by Cocoa (Theobroma cacao) Shell Activated Carbon (CSAC) was investigated in present study. Adsorption studies were performed by batch experiments as a function of process parameters such as initial pH, contact time, initial concentration and adsorbent dose. A comparison of kinetic models applied to the adsorption of MG on CSAC was evaluated for the pseudo-first order and pseudo-second order kinetic models. Results showed that the pseudo-second order kinetic model was found to correlate the experimental data well. The experimental equilibrium adsorption data was represented with Langmuir, Freundlich, Tempkin, Dubinin-Radushkevich and Flory-Huggins isotherms. The experimental data obtained in the present study indicated that activated carbon developed from cocoa shell can be attractive options for dye removal from waste water.

KEYWORDS:

Adsorption; Malachite Green; Cocoa shell; Kinetics; Isotherm

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Copy the following to cite this article: Theivarasu C, Mylsamy S, Sivakumar N. Removal of Malachite Green from Aqueous Solution by Activated Carbon Developed from Cocoa (Theobroma cacao) Shell: Kinetic and Equilibrium Studies. Orient J Chem 2011;27(3).

Copy the following to cite this URL: Theivarasu C, Mylsamy S, Sivakumar N. Removal of Malachite Green from Aqueous Solution by Activated Carbon Developed from Cocoa (Theobroma cacao) Shell: Kinetic and Equilibrium Studies. Orient J Chem 2011;27(3). Available from: http://www.orientjchem.org/?p=24525