Optimization and characterization of polysaccharide-based bioflocculant produced by Paenibacillus elgii B69 and its application in wastewater treatment

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• 作者：Ou Li^a ; Cui Lu^a ; Ao Liu^a ; Liang Zhu^a ; Pin-Mei Wang^b ; Chao-Dong Qian^a ; Xin-Hang Jiang^a ; Xue-Chang Wu^a ; ^{mblab@zju.edu.cn} ; ^{mblab@163.com}
• 关键词：Response surface methodology ; Bioflocculant ; Wastewater ; Heavy metal ion ; Dyeing pigment
• 刊名：Bioresource Technology
• 出版年：2013
• 出版时间：April, 2013
• 年：2013
• 卷：134
• 期：Complete
• 页码：87-93
• 全文大小：457 K

文摘

The optimization, purification and characterization of bioflocculant produced by Paenibacillus elgii B69 were investigated. The bioflocculant was an exopolysaccharide composed of glucose, glucuronic acid, mannose and xylose. The maximum bioflocculant production was about 25.63 g/L achieved with sucrose at 51.35 g/L, peptone at 6.78 g/L and yeast extract at 0.47 g/L optimized by response-surface methodology. In addition, a series of experiments was performed to investigate the flocculation activities towards kaolin clay, dyeing pigment, heavy metal ion, and real wastewater and the result indicated the new bioflocculant had high activities towards all the tested pollutions. These results showed its great potential for water pretreatment used in industry.