不同来源及脱乙酰度壳聚糖对铜离子吸附特性的研究  

Effect of different deacetylation degree and different sources of chitosan on the adsorptivity for Cu^(2+)

作　　者：胡健[1] 康贻军[1,2] 梅丽娟[1] 朴哲[1] 殷士学[1] 

机构地区：[1]扬州大学环境科学与工程学院,江苏扬州225009 [2]盐城师范学院生命科学与技术学院,江苏盐城224002

出　　处：《扬州大学学报（农业与生命科学版）》2008年第4期76-79,共4页Journal of Yangzhou University：Agricultural and Life Science Edition

基　　金：国家自然科学基金资助项目(130470060,40471072)

摘　　要：从虾、蟹壳中提取甲壳素并分别制备不同脱乙酰度壳聚糖,比较不同来源、不同脱乙酰度壳聚糖对铜离子的吸附特性。结果表明:蟹源壳聚糖对铜的吸附能力明显高于虾源壳聚糖,高脱乙酰度壳聚糖吸附铜离子的能力明显低于低脱乙酰度壳聚糖,除高脱乙酰度虾源壳聚糖外,其余3种壳聚糖等温吸附规律均符合Langmuir模型,4种壳聚糖等温吸附规律均不符合Freundlich模型。In order to understand the adsorption characteristics for Cu^2＋ of chitosan from different sources, four chitosan samples were prepared from the carapace of shrimp and crab with high or low deacetylation degree, the results showed that： the adsorption ability of chitosan from crab were higher than that from shrimp, and the adsorption ability of chitosan with high deacetylation degree was lower than that with low deacetylation degree, the isothermals adsorption to Cu^2＋ conformed to the Langmuir model except the chitosan from shrimp with high deacetylation, and for all samples, it was not perfectly conformed to Freundlich model.

关 键 词：壳聚糖 脱乙酰度 铜离子 吸附 

分 类 号：O647.32[理学—物理化学]