Preparation of Cationic Polyacrylamide-Grafted Starch Flocculant and Its Application in the Treatment of Coal Slurry Wastewater

摘要：

　　A cationic polyacrylamide-grafted starch (St-g-CPAM) floceulant for the coal slurry wastewater,was prepared by using corn starch and acrylamide (AM) as monomers,ethylene methyl propenoyl trimethylammonium chloride (DMC) as cationic monomer through solution polymerization.The effects of initiator concentration,reaction temperature,and monomer concentration on percentage of grafting and the grafting efficiency were investigated.The results show that the optimal conditions of the polymerization are as follows:the monomer to substrate ratio of 2.5,AM:DMC ratio of 2:1,potassium persulfate of 3×10-3mol/L,reaction time of 4h,the reaction temperature of 50℃.The additional dosage of St-g-CPAM is varying between 20 and 30 mg/L to obtain good flocculation capability.

关键词： cationic polyacrylamide flocculant coal slurry wastewater starch graft

作者: Ming Gao Zhi-qiang XU

作者单位: School of Chemical and Environmental Engineering,China University of Mining and Technology,Beijing 1 School of Chemical and Environmental Engineering,China University of Mining and Technology,Beijing 1

会议类型: 国际会议

会议名称: 2012 International Conference on Intelligent System and Applied Material(2012智能系统与应用材料国际会议)(GSAM2012)

会议地点: 太原

会议语种:英文

页码: 485-489

在线出版日期: 2012-01-13（万方平台首次上网日期，不代表论文的发表时间）