壳聚糖季铵盐复合絮凝剂对高岭土悬浮液的絮凝处理  

The flocculation processing of chitosan quaternary ammonium salt compound flocculant to kaolin suspending liquid

作　　者：王香爱[1] 

机构地区：[1]渭南师范学院化学化工系,陕西渭南714000

出　　处：《化工科技》2011年第2期6-9,共4页Science & Technology in Chemical Industry

基　　金：陕西省科技厅自然科学基金项目(2007B23);陕西省教育厅专项科研资助项目(07JK242)

摘　　要：以3-氯-2-羟丙基三甲基氯化铵(CTA)对壳聚糖(CTS)进行季铵化改性,制备了壳聚糖季铵盐(CTA-CTS),用其和聚合氯化铝(PAC)复配对高岭土悬浮液进行絮凝处理。考察了复合絮凝剂的质量配比、沉降时间、pH值对絮凝性能的影响。最佳絮凝条件为:壳聚糖季铵盐用量为2 mg/L、m(PAC)∶m(CTA-CTS)=13、沉降时间为22 min、pH=6,高岭土悬浮液的浊度可降至1.0。The chitosan（CTS） was modified using 3-chloro-2-hydroxypropyl-3-methyl-ammonium chloride（CTA） and the 2-hydroxypropyl-3-methyl-chitosan quaternary ammonium salt（CTA-CTS） was prepared.The chitosan quaternary ammonium salt was combined with the poly aluminum trichloride（PAC） to flocculate the kaolin-containing suspension.The effect of mass ratio of the PAC to CTA-CTS,the setting time and the pH on the flocculation was studied.The optimum conditions are that the content of CTA-CTS is 2mg/L,The mass ratio of the PAC to CTA-CTS is 13,the setting time is 22min,pH is 6.Under these conditions,the turbidity value of the kaolin-containing may drop to 1.0.

关 键 词：壳聚糖季铵盐 复合絮凝剂 絮凝 

分 类 号：X703.1[环境科学与工程—环境工程]