alexa Recyclable Crosslinked O-Carboxymethyl Chitosan for Removal of Cationic Dye from Aqueous Solutions | OMICS International | Abstract
ISSN: 2157-7587

Hydrology: Current Research
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Research Article

Recyclable Crosslinked O-Carboxymethyl Chitosan for Removal of Cationic Dye from Aqueous Solutions

Kishor Sarkar, Manish Debnath and P.P. Kundu*
Department of Polymer Science & Technology, University of Calcutta, India
Corresponding Author : P.P. Kundu
Department of Polymer Science & Technology
University of Calcutta
92 A. P. C. Road, Kolkata-9, India
Tel/Fax: +91033-23525106
E-mail: [email protected]
Received June 13, 2012; Accepted July 23, 2012; Published July 26, 2012
Citation: Sarkar K, Debnath M, Kundu PP (2012) Recyclable Crosslinked O-Carboxymethyl Chitosan for Removal of Cationic Dye from Aqueous Solutions. Hydrol Current Res 3:138. doi: 10.4172/2157-7587.1000138
Copyright: © 2012 Sarkar K, 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.
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Abstract

Carboxymethyl chitosan have been investigated for many biomedical applications as well as for the removal of metal ion and cationic dye from aqueous solution. But, carboxymethyl chitosan is soluble in water and therefore, it is difficult to reuse. The aim of the work was to prepare cross-linked O-carboxymethyl chitosan (OCMCTS) with different degree of substitution for the removal of Crystal Violet (CV) cationic dye from aqueous solution. The influence of the parameters such as initial pH of the dye solution, initial dye concentration, adsorption temperature, degree of substitution of OCMCTS and adsorption time on the adsorption capacity was studied using batch method. The results showed that the adsorption capacity of modified CTS increased from 28.49 mg/g to 239.54 mg/g. The kinetic study of OCMCTS showed that it follows the pseudo-second-order kinetic rather than pseudo-first-order kinetic. The adsorption equilibrium showed that the experimental data could be best fitted to the Langmuir equation. The desorbed OCMCTS can be reused to absorb the cationic dyes. Therefore, cross-linked OCMCTS may be favorable adsorbent and could be employed as low-cost alternatives for the removal of cationic dyes in wastewater treatment.

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