壳聚糖-丙烯酰胺-丙烯酸三元接枝共聚物去除废水中铜离子研究  

Study on removing Cu^(2+) in wastewater with graft copolymer of chitosan-acrylamide-acrylic acid

作　　者：武耀锋 

机构地区：[1]中国通用机械工程有限公司,北京100050

出　　处：《再生资源与循环经济》2014年第7期32-35,共4页Recyclable Resources and Circular Economy

基　　金：国家自然科学基金资助项(51308314)

摘　　要：研究pH值、温度、反应物比率对生成三元接枝共聚物的影响,三元接枝共聚物接枝率与接枝效率的计算,以及三元接枝共聚物对铜离子的吸附效果。实验与计算结果表明:生成三元接枝共聚物的最佳反应条件为引发剂(NH4)2S2O8用量6 mmol/L,反应温度50℃,壳聚糖(CTS)∶丙烯酰胺(AM)∶丙烯酸(AA)=1∶2.7∶0.3,pH值=7,反应时间5 h;在相同条件下,三元接枝共聚物对铜离子去除效果比壳聚糖有了明显的改善,对铜离子去除率最高达到90.06%,比壳聚糖对铜离子的去除率高49.72%。This paper studies the influence of pH, temperature and reactants ratio on the graft copolymer, the calculation of the grafting ratio and efficiency, and the absorbing effect on Cu^2＋. The optimum reaction conditions to generate graft copolymer： Dosage of initiator （NH4）2S2O8 is 6mmol/L, Reaction Temperature was 50 ℃, Chitosan （CTS）： Acrylamide （AM）：Acrylic Acid （AA）=1：2.7：0.3, pH=7, Reaction Time is 5h. Under the same conditions, the maximum. removal ratio of the graft copolymer on Cu^2＋ reached 90.06%, which has been improved obviously compared with the chitosan, which was 36.97%.

关 键 词：壳聚糖 丙烯酰胺 丙烯酸 三元接枝共聚物 铜离子 

分 类 号：X703[环境科学与工程—环境工程]