摘要
在合成壳聚糖席夫碱的基础上,探讨磁场作用下壳聚糖(CS)及其改性后的壳聚糖席夫碱(SB)对Cr(Ⅵ)的吸附特性.吸附动力学研究表明:壳聚糖席夫碱比改性前的壳聚糖吸附Cr(Ⅵ)的性能增强了两倍多,达到饱和吸附的时间缩短了一半.实验结果也表明,磁场处理可进一步增强壳聚糖和壳聚糖席夫碱的吸附性能,合适的磁场条件下可以有效地吸附废水中的Cr(Ⅵ).
Chitosan（CS） was modified to be Schiff base（SB） by the condensation reaction between chitosan and benzaldehyde.After synthesizing the SB,the property of SB for adsorbing Cr（Ⅵ） was determined.The change of adsorptive capacity was investigated for the modified chitosan.And the effects of magnetic field on the Cr（Ⅵ） adsorption both for CS and SB were studied.It was found from kinetics study that there was two times more adsorption for SB than that for CS.And the period to saturation adsorption for SB was half shorter than that for CS.The experimental results also showed that the adsorptions with SB and CS could be enhanced by the magnetic field treatment.Especially the adsorptive capacity of SB could be increased by a big extent.An efficient adsorption for the waste water with Cr（Ⅵ） could be ensured by a suitable magnetic treatment.
出处
《陕西科技大学学报（自然科学版）》
2010年第6期1-6,共6页
Journal of Shaanxi University of Science & Technology
基金
国家863项目(2007AA100405)
关键词
壳聚糖
席夫碱
铬离子
吸附
chitosan（CS）
Schiff base（SB）
chromium ions Cr（Ⅵ）
adsorption
