壳聚糖的改性及应用研究  

STUDY ON MODIFICATION AND APPLICATION OF CHITOSAN

作　　者：刘澜[1,2,3] 郑怀礼[1,2] 吴幼权[1,2] 

机构地区：[1]三峡库区生态环境教育部重点实验室,重庆400045 [2]重庆大学城市建设与环境工程学院,重庆400045 [3]重庆市合川区规划局,重庆401520

出　　处：《水处理技术》2009年第11期48-51,56,共5页Technology of Water Treatment

基　　金：国家自然科学基金项目(20777095);重庆市重点科技攻关项目(CSTC;2006AB7055);教育部高等学校科技创新工程重大项目培育资金项目(708071)

摘　　要：以天然物质壳聚糖和阳离子单体甲基丙烯酰氧乙基三甲基氯化铵(DMC)为基本原料,通过接枝反应,得到改性壳聚糖絮凝剂(CAM),对壳聚糖接枝产物的结构、Zeta电位、pH适应性等进行了分析,并通过对啤酒厂实际生产废水的絮凝试验分析表明,当絮凝剂用量为30mg·L-1时,除浊率可达90%以上,沉降速度可达0.55cm·s-1,COD去除率高于95%,絮凝效果明显优于CTS和PFS。The chitosan and the cationic monomer （2-methacryloyloxyethyl） trimethylammonium chloride （DMC） were modified by graft copolymerization reaction to prepare a high effective fashion flocculants （CAM）. The product structure of graft copolymerization for chitosan and DMC, the Zeta potential, the adaptability analysis ofpH values, and so on ,would be discussed in the study, and through flocculants tests on the brewery wastewater, the results showed that when the dosage of CAM was 30 mg. L^-1, the removal rate of turbidity reached over 90%, the settling velocity was up to 0.55 cm. s^-1, the removal rate of COD was over 95%, the floccutation performance of CAM was superior to that of chitosan and PFS.

关 键 词：壳聚糖 改性 絮凝剂 接枝共聚 ZETA电位 

分 类 号：TQ314.253[化学工程—高聚物工业]