壳聚糖稳定纳米零价铁及衍生物在水处理中的应用

Application of chitosan stabilized nanoscale zero-valent iron and its derivatives in water treatment

摘要:

壳聚糖稳定纳米零价铁（CS-NZVI）是一种新型复合材料，兼具还原能力和吸附能力，可用于水中金属离子、含砷盐的去除和芳香族染料的降解。本文介绍了目前制备CS-NZVI的主要方法和特点，总结了利用CS-NZVI处理重金属离子、砷离子、芳香族有机化合物等的机理和应用研究进展，在此基础上，综述了壳聚糖改性CS-NZVI、金属催化剂改性CS-NZVI以及复合改性CS-NZVI等几种壳聚糖稳定纳米零价铁衍生物的改性方法、材料性能和应用进展。最后对优化CS-NZVI制备过程、拓宽应用条件、提高材料性能等方面提出了建议和展望，为进一步研究提供了思路。

Abstract:

Chitosan stabilized nanoscale zero-valent iron (CS-NZVI) is a novel composite material with both reducing and adsorption ability, which can be used for the removal of metal ions and arsenates in water and the degradation of aromatic dyes. This paper introduces the main methods and characteristics of CS-NZVI preparation, summarizes the mechanism and application research progress of CS-NZVI treatment of heavy metal ions, arsenic ions, aromatic organic compounds, etc. On this basis, the modification methods, material properties and application progress of several chitosan stabilized nano ferritic derivatives, such as chitosan modified CS-NZVI, metal catalyst modified CS-NZVI and composite modified CS-NZVI, were reviewed. Finally, suggestions and prospects for optimizing the preparation process of CS-NZVI, broadening the application conditions and improving the material properties were put forward, which provided ideas for further research.