期刊
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
卷 24, 期 9, 页码 1627-1632出版社
SPRINGER
DOI: 10.1007/s11274-008-9654-1
关键词
bioflocculant; flocculating properties; Bacillus sp.
The characteristics of bioflocculant MBF3-3 produced by Bacillus sp. BF3-3 were investigated here. MBF3-3 showed excellent flocculating activity on real and synthetic wastewaters, and consumed a much lower dosage than that of the widely used polyaluminum chloride (PAC) when flocculating brewery wastewater. Except Fe(3+), metal ions, including Al(3+), Mg(2+), Ca(2+), K(+) and Na(+), can stimulate the flocculating activity of MBF3-3 obviously, and the stimulating effects increased in the order: monovalent < bivalent < trivalent. MBF3-3 was mainly composed of acidic polysaccharide (66.1%) and protein (29.3%), in which acidic polysaccharide was the main effective flocculating component. OH and COO- groups may play a vital role in the flocculation of suspended particles.
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