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《Journal of Anhui Agricultural Sciences》 2010-23
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Optimization of Culture Condition of Bioflocculant-producing and Component Analysis of Microbial Flocculant

CUI Ke et al (Chengdu University of Information Technology,Chengdu,Sichuan 610225)  
[Objective] The research aimed to screen culture condition of bioflocculant-producing and analyze the component of microbial flocculant. [Method] A flocculant-producing strain MB-7 was isolated. The effects of different culture condition such as carbon source,nitrogen source,pH value,temperature,culture time and rotation speed on flocculation rate were studied. [Result] The optimum culture condition of flocculant produced by strain MB-7 was as follow:carbon source was starch,nitrogen source was ammonium sulfate,the optimum culture time was 72 h,pH value was 7.0,culture temperature was 30 ℃ and rotation speed was 160 r/min. The flocculating rate of strain MB-7 was 94.5% against 4% Kaolin clay suspension. The main active components of flocculant presented in the fermentation broth,and the main components of MBF-7 was polysaccharide,the content was 85.7%. [Conclusion] The study can lay basis for developing high efficiency,no poison,no second pollution and bio-degradable water treatment agent.
【Fund】: 四川省教育厅青年基金项目;; 成都信息工程学院发展基金项目
【CateGory Index】: X703.5
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