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.
出处
《环境工程学报》
CAS
CSCD
北大核心
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)
关键词
沸石
壳聚糖
甲基橙
吸附
zeolite
chitosan
methyl orange
adsorption
