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Author(s): |
Yan-ling Bao, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, China
Guang-ze Dai, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, China
Chun-jiang Yan, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, China
Mei-xia Li, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, China
Zheng-shuai Niu, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, China
Peng Xie, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, China |
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Abstract: |
In this paper, by using PAN-based carbon fiber (CF) with different modifications as biofilm carriers, duplex modification consisted of surface oxidation and metalion-adsorption was proved to be the best method of surface treatment for CF carrier. CF surface characteristics represented by laser confocal microsopy (LCM), X-ray photoelectron spectrum (XPS) and the degree of moisture, and analysis of immobilization of microorganisms shows that increasing surface hydrophilicity and roughness is good for biofilm formation, the O-C=O group on CF surface is helpful in enhance the adhesion strength of microorganisms, and metalions adsorbed on CF surface may enhance the immobilization strength of microorganisms by connecting electronegative oxygen groups on CF surface and extracellular polymeric substances (EPS) which is also electronegative.
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