Journal :   Asian Journal of Research in Chemistry

Volume No. :   10

Issue No. :  3

Year :  2017

Pages :   362-368

ISSN Print :  0974-4169

ISSN Online :  0974-4150


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Determination of isotherm parameters for the adsorption of Rhodamine B dye onto activated carbon prepared from Ziziphus jujuba seeds



Address:   Sivarajan, A1*, Shanmugapriya, V. 2
1Department of Chemistry, M.R.G College, Mannargudi – 614 001.
2Department of Chemistry, Government Arts college, Thuvakudi Malai, Tiruchirappalli - 620 022.
*Corresponding Author
DOI No: 10.5958/0974-4150.2017.00062.1

ABSTRACT:
The adsorption of Rhodamine B dye from aqueous solution onto activated carbon prepared from Ziziphus jujuba seed by zinc chloride activation (ZAC) was studied in a batch system with respect to contact time, pH, and temperature. Solution pH 4 was favorable for the adsorption of this dye. Equilibrium isotherms were analysed by Langmuir, Freundlich, Dubinin–Radushkevich and Temkin isotherms. The adsorption capacity was found to be 142.9 mg/g by Langmuir isotherm. The Temkin and Dubiniin - Raduskevich isotherm constants suggested that physisorption might be the major mode of the adsorption process. Thermodynamic parameters like ?G?, ?H? and ?S? were calculated. These values inferred the spontaneous adsorption with increased randomness at the solid-liquid interface and endothermic behavior.
KEYWORDS:
Adsorption; Rhodamine B dye; Ziziphus jujuba seed carbon; Isotherms; pH effect.
Cite:
Sivarajan, A, Shanmugapriya, V.. Determination of isotherm parameters for the adsorption of Rhodamine B dye onto activated carbon prepared from Ziziphus jujuba seeds. Asian J. Research Chem. 2017; 10(3):362-368.
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