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《Environmental Science & Technology》 2012-01
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Investigation into a Bio-flocculant Prepared from Residue of Excess Sludge

LI Chun-ling,JIN Ruo-fei*,ZHOU Ji-ti,JIANG Lin-lin,WANG Jing(School of Environmental Science and Technology,Dalian University of Technology,Dalian 116024,China)  
A kind of bio-flocculant was prepared from residue of excess sludge of a WWTP and experimental studies were conducted to examine its flocculent activity by which the optimum condition for preparation could be determined.Stability of the bio-flocculant was tested and the result showed its excellent thermal and pH stabilities,its good storage stability-activity of flocculation maintained 94% and more after 100 days storage.Chemical analysis showed that its main component was polysaccharide and SEM was used to examine the flocs form and structure.Mechanism of its flocculating with kaolin was also discussed.
【Fund】: 博士后科学基金(200902538);; 国家自然科学基金(50808029);; 国家863计划项目(2009AA062906)
【CateGory Index】: X703
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