Polymer(Korea) (폴리머)

The Polymer Society of Korea (한국고분자학회)
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Adsorption Behavior of Sr Ion on Calcium-Alginate-Chitosan

Calcium-Alginate-Chitosan의 스트론튬 이온 흡착 거동

  • Lan, Dong (Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics) ;
  • Bing, Deng (Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics) ;
  • Lanlan, Ding (Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics) ;
  • Qiong, Cheng (Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics) ;
  • Yong, Yang (Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics) ;
  • Yang, Du (Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics)
  • Received : 2013.12.15
  • Accepted : 2014.04.20
  • Published : 2014.09.25
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Abstract

Sodium alginate and chitosan are added to a $CaCl_2$ solution to prepare calcium-alginate-chitosan and calciumalginate gels. After dehydration through stoving, two types of adsorbent particles are obtained. The adsorption process of the particles obtained for low concentrations of $Sr^{2+}$ satisfies a second-order kinetic equation and the Freundlich adsorption model. The thermodynamic behaviors of the particles indicate that adsorption occurs via a spontaneous physical process. XPS pattern analysis is used to demonstrate the adsorption of $Sr^{2+}$ by calcium alginate and chitosan. By building an interaction model of the molecules of chitosan and alginate with $Ca^{2+}$ and $Sr^{2+}$ to calculate energy parameters, Fukui index, Mulliken charge, and Mulliken population, adsorption of $Sr^{2+}$ on the molecular chains of chitosan as well as the boundary of calcium-alginate-chitosan is observed to show weak stability; by contrast, adsorption between molecular chains is high.

Keywords

Acknowledgement

Supported by : Institute of Neclear Physics nd Chemistry

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