壳聚糖基吸附膜的研究进展

Advance in the Study of Chitosan-Based Adsorption Membranes

壳聚糖是一种环境友好生物质材料。由于其分子链上带有不同的功能基团,对水体中的重金属离子具有较好的吸附效果。由此,基于壳聚糖的吸附膜材料在处理水体重金属离子污染方面受到了国内外研究者的广泛关注。综述了近十年来壳聚糖基吸附膜对水体中金属离子的吸附性能的研究,分析了不同类别壳聚糖基吸附膜的制备方法及应用情况,简要概述CS的改性方法,详细讨论了吸附膜的解吸附和再生问题。最后,提出了壳聚糖基吸附膜的未来发展方向在于:努力提高机械稳定性和可重复使用性,以及制备自再生壳聚糖基膜的可能性。

Chitosan(CS)is a type of environmental friendly biomass material.Because CS has different functional groups on the molecular chain,it has a good adsorption effect on heavy-metal ions in water.Therefore,chitosan-based adsorption membrane and related materials have been widely used in the treatment of heavy metal ion from polluted water.In this paper,researches on the adsorption performance of chitosan-based adsorption membranes for the removal of metal ions from water in the last ten years is reviewed,the preparation methods and applications of different types of chitosan-based adsorption membranes are analyzed,the modification methods of CS are briefly summarized,and the desorption and regeneration of the adsorption membranes are discussed in detail.Finally,the future development of chitosan-based adsorption membranes will be focused on such aspects as the improvement of mechanical stability and reusability,as well as the preparation of self-regenerating chitosan-based membranes.