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Research Article

Efficient Removal of Cr(VI) from Aqueous Solution onto Palm Trunk Charcoal: Kinetic and Equilibrium Studies

Sunil Kumar Yadav1 and Dixit AK2*

1Department of Chemistry, HB Technological Institute, Kanpur, Uttar Pradesh, India

2Department of Chemistry, VSSD College, Kanpur, Uttar Pradesh, India

*Corresponding Author:
Dixit AK
Department of Chemistry, VSSD College
Kanpur-208 002, Uttar Pradesh, India
Tel: +919415040226
Fax: 0512-2563842
E-mail: [email protected]

Received date: November 05, 2015; Accepted date: November 10, 2015; Published date: November 18, 2015

Citation: Yadav SK, Dixit AK (2015) Efficient Removal of Cr(VI) from Aqueous Solution onto Palm Trunk Charcoal: Kinetic and Equilibrium Studies. Chem Sci J 6:114. doi:10.4172/Chemical-Sciences.1000114

Copyright: © 2015 Yadav SK, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

In the present study, carbonization method using mineral acids at elevated temperature. The potential of chemically carbonized palm trunk charcoal (PTC) for the effective removal of Cr(VI) ions from aqueous solution has been investigated in batch experiments. The sorption kinetics at pH=1.5 and the sorption isotherms at different pHs were studied. Chromium concentration was analyzed spectrophotometrically using 1,5-diphenylcarbazide. In order to the maximal adsorption at pH 1.5 was 24.7 mg g-1. The equilibrium adsorption capacity of PTC increases (4.99 to 24.7 mg g-1) as the initial Cr(VI) concentration increases (10-50 mg L-1). The adsorption behavior of Cr(VI) is best described by the pseudo-second order model and the calculated equilibrium capacity (15.6 mg g-1) agree with the experimental value (14.75 mg g-1). The equilibrium data were well fitted by the Langmuir isotherm model by revealing the maximum sorption capacity of PTC (24.7 mg g-1). The mechanism of adsorption was also studied using Fourier transform infrared (FTIR) spectroscopy. The bond of Cr(VI) to the functional groups of charcoal seems to be irreversible in the case of dried Cr(VI) saturated charcoals.

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