Journal of Fiber Bioengineering and Informatics
 
Journal of Fiber Bioengineering and Informatics  2016, Vol. 9 Issue (2): 89-100    DOI: 10.3993/jfbim00233
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Chitosan and Chitosan/Titania Beads for Reactive Red 35 Removal
Department of Materials Science,Faculty of Science,Chulalongkorn University
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Abstract  

This study investigated the adsorption capacity to remove C.I. Reactive Red 35 by three different adsorbent beads, consisting of pure chitosan and two different chitosan/titania (TiO2) composite beads with the TiO2 being obtained either from the sol-gel method or from added commercial TiO2 (A100-TiO2). From the obtained dye adsorption capacities, the chitosan/TiO2 composite beads with A100-TiO2 had the highest adsorption ability to remove reactive dye solution up to 97%, compared to the chitosan/TiO2 composite beads with TiO2 obtained from the sol-gel method (adsorption capacity of 70-45%). This maybe because the A100-TiO2 contained in the chitosan/TiO2-sol composite beads was in the anatase crystalline form, while the TiO2 obtained from the sol-gel method did not form a good anatase crystalline form, as shown by X-ray diffraction patterns and SEM micrographs. The crystallization of anatase formed in the composite beads enhanced the adsorption capacity of the composite beads. Pure chitosan adsorbent also showed a good adsorption capacity (95%) due to the electrostatic interactions between chitosan and C.I. Reactive Red 35.

Key wordsChitosan      Titania      Adsorption      Isotherm     
Fund:Project supported by Chulalongkorn University graduate school thesis grant, Chulalongkorn University for financial support.
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Siriwan Kittinaovarat
Prangsiri Maneenoun
Cite this article:   
Siriwan Kittinaovarat,Prangsiri Maneenoun. Chitosan and Chitosan/Titania Beads for Reactive Red 35 Removal[J]. Journal of Fiber Bioengineering and Informatics, 2016, 9(2): 89-100.
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