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《Environmental Chemistry》 2001-06
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STUDIES ON CHARACTERISTICS OF MICROBIAL FLOCCULANT

Gong Xiaoyan Luan Zhaokun Wang Shuguang Li Zehua(Research Center for Eco-Environmental Sciences, Chinee Academy of SciencesState Key Laboratory of Environmental Aquatic Chemistry, Beijing, 100085)  
Flocculation characteristics of bioflocculant produced by Bacillus sp. B-2 were studied. It showed that Bacillus sp. B-2 produced extracellular flocculant with the highest flocculation activity of 97% superior to common used organic or inorgantic flocculant during its growth. Under the opti-mum conditions, the amount of flocculant production was 1.7 g· l-1. The suitable pH value for the flocculant to flocculate Kaolin clay suspension was higher than 7. Ca2+ , Mg2+ , Mn2+ , Al3+ facilitate flocculation activity of microbial flocculant and the flocculating activity was intensifed with increase in Ca 2+ concentration.
【Fund】: 国家自然科学重点基金资助项目(批准号:59838300)
【CateGory Index】: X172
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