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Citation: QIU Congjiao, LIU Meiling, ZHAO Yan, LI Haitao. Synthesis of Crosslinked Chitosan-Supported Thiadizole Heterocyclic Functional Chelating Resin and Its Adsorption Properties[J]. Chinese Journal of Applied Chemistry, ;2011, 28(6): 634-639. doi: 10.3724/SP.J.1095.2011.00397 shu

Synthesis of Crosslinked Chitosan-Supported Thiadizole Heterocyclic Functional Chelating Resin and Its Adsorption Properties

QIU Congjiao ^a ,
LIU Meiling ^a,, ,
ZHAO Yan ^a ,
LI Haitao ^a,b,,

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

Corresponding author: LIU Meiling, LI Haitao,
Received Date: 7 July 2010
Available Online: 28 September 2010
Fund Project: 国家自然科学基金(21075037) (21075037)湖南省自然科学基金(07JJ3024)资助项目 (07JJ3024)

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.
- cross-linked chitosan,
- thiadizole,
- synthesis,
- adsorption,
- metal-ions
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