壳聚糖对水中铝离子的吸附性能  

Adsorption Property of Chitosan Towards Aluminium(Ⅲ)

作　　者：刘秉涛[1] 娄渊知[1] 姜安玺[2] 

机构地区：[1]华北水利水电学院环境工程系,河南郑州450011 [2]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090

出　　处：《化学研究》2006年第3期46-48,63,共4页Chemical Research

摘　　要：研究了静态条件下壳聚糖对铝离子的吸附性能,探讨了壳聚糖吸附A l3+的最佳条件.结果表明,壳聚糖对水溶液中的A l3+吸附速度比较快,饱和吸附量为49.0 mg.g-1,适宜的pH为4,温度影响不大.对等温吸附平衡数据进行分析,符合Langmu ir吸附模型.对壳聚糖-铝(Ⅲ)配合物的红外光谱及电子能谱分析表明,壳聚糖分子中的氨基与A l3+发生了配位作用,吸附机理以单分子层化学吸附为主.The adsorption of Al^3 ＋ onto chitosan（CTS） was studied under static condition. The results showed that the adsorption of Al^3 ＋ onto chitosan was a fast process with 49 mg·g^-1 capacity, while the adequate pH was 4 without temperature effect. The adsorption process was in accordance with Langmuir isotherm. The FTIR, XPS analyses of formed Chitosan -Al（Ⅲ） indicate that the adsorption was from the coordination of -NH2groups of chitosan to Al^3 ＋. The mechanicsm was mainly controlled by chemical monolayer adsorption.

关 键 词：壳聚糖 铝 吸附 配位 

分 类 号：O647.3[理学—物理化学]