Kinetic studies on the removal of Cr (VI) using natural adsorbent

International Journal of Chemical Engineering Research

© 2017 by SSRG - IJCER Journal

Volume 4 Issue 1

Year of Publication : 2017

Authors : Dr. K.Senthilkumar, N. SriGokilavani, Dr. P. Akilamudhan

10.14445/23945370/IJCER-V4I1P105

How to Cite?

Dr. K.Senthilkumar, N. SriGokilavani, Dr. P. Akilamudhan, "Kinetic studies on the removal of Cr (VI) using natural adsorbent," SSRG International Journal of Chemical Engineering Research, vol. 4,  no. 1, pp. 28-53, 2017. Crossref, https://doi.org/10.14445/23945370/IJCER-V4I1P105

Abstract:

This paper presents the adsorption of Cr (VI) ions in a laboratory batch scale mode by eggshells as a low-cost sorbent, which is available, cheap, and may represent an environmental problem. The adsorption process and extent of adsorption are dependent on the physical and chemical characteristics of the adsorbent, adsorbate and experimental conditions. The effect of process parameters like solution pH, initial concentration of Cr (VI) ions, adsorbent dose, agitation speed and temperature on the adsorption of Cr (VI) was studied. It was found that crushed eggshells possess relatively high sorption capacity, when comparing with other sorbents. The adsorption process follows the second order kinetic equation. Various isotherms were tested and it is found that Langmuir isotherm fits this process.

Keywords:

Adsorption, Cr (VI), low-cost adsorbent, Egg shell powder, Kinetics, adsorption isotherm

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