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Vol. 32 No. 1 (2020): Vol 32 Issue 1

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Removal of Cadmium(II) from Water using Modified Citrus limettioides Peels: Thermodynamic and Isotherm Studies

https://doi.org/10.14233/ajchem.2020.22278
P. Janaki
Department of Chemistry, Vivekanandha College of Arts and Sciences for Women, Namakkal-637205, India
R. Sudha
Department of Chemistry, Gnanamani College of Technology, Namakkal-637018, India
T.S. Sribharathi
Department of Chemistry, Vivekanandha College of Arts and Sciences for Women, Namakkal-637205, India
P. Anitha
Department of Chemistry, Government College of Engineering, Salem-636011, India
K. Poornima
Department of Chemistry, Government College of Engineering, Salem-636011, India
P. Premkumar
Department of Chemistry, Gnanamani College of Technology, Namakkal-637018, India

Corresponding Author(s) : R. Sudha

sudhar8680@gmail.com

Asian Journal of Chemistry, Vol. 32 No. 1 (2020): Vol 32 Issue 1

Abstract

The adsorption performance of sulphuric acid treated low cost adsorbent synthesized by using Citrus limettioides peel as an effective raw material for the removal of cadmium(II) from water. The batch adsorption method was carried out to optimize some parameters like contact time, pH and adsorbent dose. The nonlinear isotherm equations were used to calculate the different isotherm constant of five isotherm models namely Freundlich, Langmuir, Dubinin-Radushkevich, Redlich-Peterson and Sips. The Langmuir monolayer adsorption capacity of chemically modified Citrus limettioides peel was found to be 287.60 mg g-1. The negative values of ΔGº and ΔHº showed that the adsorption process is spontaneous and exothermic.

Keywords

Cadmium(II) Isotherms Citrus limettioides Sorption
Janaki, P., Sudha, R., Sribharathi, T., Anitha, P., Poornima, K., & Premkumar, P. (2019). Removal of Cadmium(II) from Water using Modified Citrus limettioides Peels: Thermodynamic and Isotherm Studies. Asian Journal of Chemistry, 32(1), 73–78. https://doi.org/10.14233/ajchem.2020.22278
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