化工进展

• 研究开发 • 上一篇    下一篇

阳离子聚丙烯酰胺反相胶乳的制备及其絮凝性能

惠 泉,刘福胜,于世涛   

  1. 青岛科技大学化工学院
  • 出版日期:2008-06-05 发布日期:2008-06-05

Preparation and flocculating performance of inverse emulsion of cationic polyacrylamide

HUI Quan,LIU Fusheng,YU Shitao   

  1. College of Chemical Engineering,Qingdao University of Science and Technology
  • Online:2008-06-05 Published:2008-06-05

摘要: 以丙烯酰胺和甲基丙烯酰氧乙基三甲基氯化铵为单体,通过反相乳液聚合法制备了絮凝性能优异的阳离子聚丙烯酰胺反相胶乳。考察了乳化剂浓度、引发剂浓度、单体浓度及阳离子度对聚合物分子量和粒子粒径的影响,并研究了污泥pH值、污泥温度和聚合物用量等条件对絮凝性能的影响。得到的较佳条件是:乳化剂质量分数7.3%,引发剂质量分数0.02%、单体质量分数45%、阳离子度25%,在上述较佳条件下所得聚合物的黏均分子量为339.2万,粒子粒径均低于70 nm;污泥pH值为5~6,聚合物用量为0.057%的条件下污泥的絮凝率达62.2%,脱水率达82%。

Abstract:

Cationic polyacrylamide was prepared by inverse emulsion copolymerization using acrylamide (AM) and methacryloyloxyethyltrimethyl ammonium chloride (DMC) as monomers. The influences of the factors, such as emulsifier concentration, initiator concentration, monomer concentration and cationic degree, on the molecular weight and particle size of polymer were investigated. The effects of pH and temperature of waste water and polymer dosage on flocculating results were studied in flocculating experiment. The obtained optimum conditions were emulsifier weight fraction 7.3%, initiator weight fraction 0.02%, monomer weight fraction 45% and cationic degree 25%. Under the above conditions,the molecular weight and particle size of polymer were 339.2 104 and smaller than 70 nm respectively. And the flocculating rate and dewatering rate were 62.2% and 82% respectively under the conditions of wastewater pH 5—6 and polymer dosage 0.057%.

京ICP备12046843号-2;京公网安备 11010102001994号
版权所有 © 《化工进展》编辑部
地址:北京市东城区青年湖南街13号 邮编:100011
电子信箱:hgjz@cip.com.cn
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持:support@magtech.com.cn