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Studies on the Performance of Protonated cross linked Chitosan Beads (PCCB) for Chromium Removal

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Author Affiliations

  • 1 Department of Chemical Engineering, Coimbatore Institute of Technology, Coimbatore-14, Tamil Nadu, INDIA

Res.J.chem.sci., Volume 2, Issue (6), Pages 55-59, June,18 (2012)

Abstract

The heavy metals in the soil and ground water have endangered our environment and human body by direct or indirect pathway. Theoretically, the traditional remediation method is physical-chemical processes, which resulted in high capital cost and serious damage in contaminated sites. Currently, bioremediation is a developing biologic process that offers the possibility to destroy various contaminants using natural biological activity. Biopolymers are industrially attractive for a number of reasons; their capability of lowering transition metal-ion concentration to parts per billion concentrations, they are widely available and are environmentally safe.This paper deals with the preparation of protonated cross linked chitosan beads for the removal of chromium ions from aqueous solution. The effect of process parameters such as initial metal ion concentration, contact time, pH and temperature were studied on the performance of percentage removal of chromium. Adsorption isotherms and kinetic studies were established to test the solute interaction with solvent and rate of the reaction respectively. Thermodynamic parameters were also determined to find the nature and spontaneity of the reaction.

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