Adsorption of Dimethylformamide by Macroporous Chitosan Membranes

摘要：

The aim of this work is to develop a macroporous chitosan membrane by using silica gel as porogen for dimethylformamide adsorption. The morphology, porosity and DMF adsorption capacity of the macroporous chitosan membrane were measured. SEM photographs show the pores in the membrane dispersed uniformly. The porosity of the membrane was depending on the weight ratio of silica gel to chitosan and reached a maximum value of 50.33% when the weight ratio of silica gel to chitosan was 10.DMF adsorption capacity of the macroporous chitosan membranes increased with increasing porosity of the membranes and reached 145 mg/g membrane when porosity of the membrane was 50.33%. The adsorption equilibrium data can be well fitted using Freundlich adsorption model. Regeneration of the macroporous chitosan membranes was also investigated. The results show that DMF adsorption capacities of the macroporous chitosan membranes keep almost unchanged after regenerated several times.

关键词： dimethylformamide macroporous chitosan membrane adsorption silica gel

作者: Li Sifang Chen Qiang

作者单位: Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China

会议类型: 国际会议

会议名称: The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)

会议地点: 大连

会议语种:英文

在线出版日期: 2008-08-04（万方平台首次上网日期，不代表论文的发表时间）