Plasmochemical preparation of chitosan-based adsorbtion materials

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Project Identification
GP202/06/P337
Project Period
1/2006 - 12/2008
Investor / Pogramme / Project type
Czech Science Foundation
MU Faculty or unit
Faculty of Science
Keywords
chitosan, atmospheric pressure plasma, heavy metal, wastewater

Chitosan exhibits exceptional adsorption characteristics especially for heavy metals, which are causing a serious concern in wastewater streams.
Immobilization of chitosan onto low-cost substrate significantly improves its feasibility in water treatment plants. Polypropylene (PP) nonwoven fabric was identified as an excellent option for the substrate material; nevertheless a modification of PP surface is required to secure adequate adhesion of chitosan coating. We propose to achieve the PP modification by plasma treatment at atmospheric pressure mediated by Diffuse Coplanar Surface Barrier Discharge – a low-temperature plasma source recently developed with the applicant’s participation. DCSBD electrode will be modified to enhance the uniform plasma fraction, which is known to cause better results of chitosan coating. A process control of the chitosan-coating will be then pursued to enhance the porosity of final layer and to minimize the treatment time. Adsorption of chitosan coating to various heavy metal ions will be studied and consequently optimized for highest adsorption capacity. Finally a plasma post-treatment of chitosan-coated nonwoven will be studied.

Publications

Total number of publications: 5


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