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改性壳聚糖絮凝剂的制备及絮凝性能的研究
Preparation of modified chitosan and its properties of flocculating
【摘要】 以过硫酸铵为引发剂,在壳聚糖与丙烯酰胺的质量比为1∶2的条件下,使壳聚糖和丙烯酰胺在30℃时发生接枝共聚反应,制得改性壳聚糖絮凝剂(CAM),通过对高岭土悬浮液和印染废水的絮凝实验表明,CAM具有阳离子型高分子絮凝剂的典型特征,其絮凝性能优于壳聚糖,在其用量为壳聚糖质量的20%情况下,CAM对印染废水的CODC r去除率提高了30%。
【Abstract】 The modified chitosan (CAM) was made by graft co-polymerization of chitosan and acrylamide using the ammonium persulfate as initiator and the mass ratio of chitosan and acrylamide is 1∶2,reaction temperature is (30℃).The results of flocculating experiments of CAM on kaolin suspension and dyeing waste water indicated that CAM has a typical character of cation high moleculer flocculation and better flocculating ability than chitosan . The removal rate of CODCr of dyeing waste water enhanced by 30% in flocculant’s adding quantity reduced by 80%.
【Key words】 chitosan; acrylamide; co-polymerization; properties of flocculation; dyeing waste water;
- 【文献出处】 南京工业大学学报(自然科学版) ,Journal of Nanjing University of Technology , 编辑部邮箱 ,2005年05期
- 【分类号】X703
- 【被引频次】34
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