阳离子聚丙烯酰胺对克雷伯杆菌絮凝效果的研究  

Study on flocculation efficiencies of Klebsiella cell with cationic polyacrylamide

作　　者：崔秀云[1] 马全红[1] 吴敏[1] 倪进波[1] 

机构地区：[1]东南大学化学化工学院,江苏南京211189

出　　处：《应用化工》2007年第11期1061-1065,共5页Applied Chemical Industry

基　　金：江苏省高技术项目(BG2006036)

摘　　要：采用有机絮凝剂阳离子型聚丙烯酰胺对克雷伯菌菌悬液进行絮凝处理。探讨了浓度、pH值、温度、助滤剂对絮凝剂絮凝及过滤性能的影响,并采用光学显微镜和扫描电子显微镜对菌悬液、絮凝剂和絮体3个方面进行了絮凝形态观察。结果表明,絮凝剂浓度为0.08 g/L,pH=7,温度为37℃时絮凝效果最佳。添加助滤剂Al2(SO4)3.18H2O、CaCl2.2H2O后过滤效果有明显的提高,且絮凝颗粒增大,沉降速度加快。Flocculation of Klebsiella cell broth with cationic polyacrylamide flocculants was studied. The effects of concentration, pH, temperature and filter on the flocculation and filtration were investigated. The flocculants morphology were observed by optical microscope and SEM（ scanning electron microscope） in there aspects：bacterial suspension, flocculants and flocs. Experimental results indicated that the optimum flocculation conditions were ： the concentration of cationic polyacrylamide was 0.08 g/L, pH = 7 and temperature 37 ℃. The effects of filtration was improved obviously after adding filter aid agents Al2 （ SO4 ） 3 · 18H2O and CaCl2 · 2H2O. The results also show that filter aid can largen flocculent grain, quicken sedimentation rate.

关 键 词：克雷伯菌 阳离子型聚丙烯酰胺 絮凝 过滤 絮凝形态 

分 类 号：TQ314.253[化学工程—高聚物工业] TQ028.5