壳聚糖-沸石杂化膜的制备及其对甲基橙的吸附  

Preparation of chitosan-zeolite hybrid membrane and its adsorption to methyl orange

作　　者：陈盛[1] 罗志敏[1] 刘燕[2] 

机构地区：[1]福建师范大学福建分校,福清350300 [2]福建师范大学环境科学与工程学院,福州350007

出　　处：《环境工程学报》2012年第5期1613-1618,共6页Chinese Journal of Environmental Engineering

基　　金：福建省教育厅科技项目(JB09240);福州市科技局项目(2010-G-110)

摘　　要：采用物理共混法制备了壳聚糖-沸石杂化膜,用扫描电镜(SEM)和热重分析仪(TGA)对其进行表征,并系统地研究了壳聚糖-沸石杂化膜对甲基橙的吸附行为。结果表明,最佳质量配比为(沸石/壳聚糖)为1∶20;pH值对吸附的影响最为关键,在实验浓度的范围内对甲基橙溶液最大吸附量为974.05 mg/g。杂化膜对甲基橙的等温吸附行为符合Lang-muir模型,吸附动力学模式符合准二级动力学方程,考虑以化学吸附行为为主。杂化膜有良好的再生能力。The hybrid membrane was prepared by chitosan and zeolite,then characterized by SEM and TG,and its adsorption performance on methyl orange was described.The best mass proportion（zeolite /chitosan） was 1∶20.The pH value was an important factor of the adsorption,the maximum adsorption capacity was up to 974.05 mg/g under the experimental conditions.The absorption isotherm conformed to Langmuir model.The adsorption of methyl orange by hybrid membrane fitted well to the pseudo-second-order model,and indicated a behaviour of chemical adsorption.

关 键 词：沸石 壳聚糖 甲基橙 吸附 

分 类 号：X703[环境科学与工程—环境工程]