羧甲基壳聚糖插层膨润土的研制及其对Cu^(2+)的吸附

Preparation of Carboxymethyl Chitosan Intercalation Bentonite and Its Adsorption to Cu^(2+)

以钠基膨润土为原料制备插层膨润土复合吸附材料。通过X-衍射(XRD)和红外吸收光谱(IR)表征插层膨润土的结构,用分光光度法分析插层膨润土对Cu2+的吸附性能。结果表明:羧甲基壳聚糖成功插入膨润土层间,插层土对Cu2+有良好吸附性能,当羧甲基壳聚糖与有机膨润土质量比1∶15,吸附时间2h,铜离子浓度为100mg/L,吸附率达99.6%。

The intercalation bentonite compound adsorption materials was prepared from sodium bentonite. Its structure was characterized by XRD and IR. The adsorption behaviour to Cu^2＋ was analyzed by infrared spectum analysis. The results showed that the carboxymethyl chitosan had been inserted into the organo-bentonite＇s layer successfully, and the adsorption performance of the intercalation organo-bentonite to Cu^2＋ was good. When carboxymethyl chitosan ： Organo-bentonite （w/w） was 1 ： 15, the adsorption time was 2h and the concentration of Cu^2＋ was 100mg/L, the adsorption rate reached 99.6%.