Synthesis of Crosslinked Chitosan-Supported Thiadizole Hetrocyclic Functional Chelatig Resin and Its Adsorptin Properties

doi:10.3724/SP.J.1095.2011.00397

Chinese Journal of Applied Chemistry ›› 2011, Vol. 28 ›› Issue (06): 634-639.DOI: 10.3724/SP.J.1095.2011.00397

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Synthesis of Crosslinked Chitosan-Supported Thiadizole Hetrocyclic Functional Chelatig Resin and Its Adsorptin Properties

QIU Congjiao¹, LIU Meiling^1*, ZHAO Yan¹, LI Haitao^1,2*

(1.Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research(Ministry of Education),
College of Chemistry and Chemical Engineering,Hunan Normal University,Changsha 410151;
2.Safety Professional and Technology College,Changsha 410081)

Received:2010-07-07 Revised:2010-09-19 Online:2011-06-10 Published:2011-06-10

Abstract

Abstract:

A new hydrophilic functional chelating resin(CTS-AMT) with heterocyclic group were synthesized by the graft reaction between 2-amino-5-mercapto-1,3,4-thiadizole(AMT) and macroporous Schiff base chitosan(CTS)chelated bead. The structure of the resin was confirmed by FTIR spectra and elemental analysis. The adsorption property and the selectivity of CTS-AMT and the parent chitosan for Cd2+, Zn2+, Cu2+, Pb2+, Ag+ and Hg2+ were compared. The experimental results show that CTS-AMT has a higher adsorption capacity and a better selectivity than CTS as expected. In the solution of pH=5.0, T=298.15 K, the adsorption of resin on metal ions can be accomplished in about 1.5 h. The static adsorption capacities for Hg2+, Ag+ and Pb2+ are 2.54, 2.31, and 1.71 mmol/g, respectively. It shows that the adsorption isotherms approximately follows Langmuir isotherm equation under the experimental concentrations.

Key words: Cross-linked chitosan, thiadiazole, synthesis, adsorption, Metal ion

CLC Number:

QIU Congjiao1, LIU Meiling1*, ZHAO Yan1, LI Haitao1,2*. Synthesis of Crosslinked Chitosan-Supported Thiadizole Hetrocyclic Functional Chelatig Resin and Its Adsorptin Properties[J]. Chinese Journal of Applied Chemistry, 2011, 28(06): 634-639.

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Synthesis of Crosslinked Chitosan-Supported Thiadizole Hetrocyclic Functional Chelatig Resin and Its Adsorptin Properties

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