摘要
以过硫酸铵和亚硫酸氢钠为引发剂,在N2保护下,以丙烯酰胺为接枝物,对壳聚糖进行改性,制得了壳聚糖接枝丙烯酰胺共聚物(CAM),并将其应用于处理电镀含铬废水.确定了以壳聚糖接枝共聚物在处理含铬废水中的最佳加入量,以及适宜的搅拌时间、搅拌速度和最佳pH值等条件.结果表明,对电镀含铬废水进行絮凝处理时的CAM的最佳用量为2 mg(CAM)/L(废水),pH值为7.8时,搅拌速度为200 r/min,搅拌时间为3 min,沉降时间为4 h,其絮凝效果最好,铬的除去率达到94%.
Chitosan was modified by acrylamide with ammonium persulfate and sodium sulfite as initiators under the protection of nitrogen.The resulting product,chitosan grafting acrylamide polymer(CAM),was obtained.Application of CAM in treatment of eleceroplating chromium-containing waste water was carried out.The parameters including amount of CAM,treated time,stirring speed and pH were optimized.The optimized results were as follows.A mount of CAM is 2 mg/L,the stirring speed is 200 r/min maintained 3 min,aging tim...
出处
《陕西师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第6期47-50,共4页
Journal of Shaanxi Normal University：Natural Science Edition
基金
温州市科技计划资助项目(H20070015)
关键词
壳聚糖
接枝
丙烯酰胺
重金属离子
絮凝
chitosan
grafting
acrylamide
heavy metal ion
flocculating
