纤维素基吸附剂对重金属离子吸附的研究进展

纤维素作为一种可再生、对环境友好的生物质资源，成为吸附领域的重点研究对象之一。本文着重介绍了氧化改性、酯化改性、醚化改性、接枝共聚、交联改性和复合改性的纤维素基吸附材料在重金属离子吸附领域的研究进展。这些改性方法均能改善纤维素对重金属离子的吸附性能，但存在着流程较长、吸附条件较为苛刻、金属适用范围各异的局限性。因此，应通过进一步系统研究，找到制备可选择性吸附重金属离子的纤维素基吸附材料经济有效的方法。

Research Progress in Cellulose-Based Adsorbents for Heavy Metal Ions

As one of the renewable and environmental-friendly biomass resources， cellulose has become a research hotspot in the field of adsorption. In this paper， the research progress of different modification methods for preparing cellulose-based adsorption materials to remove heavy metal ions was emphatically reviewed， focusing on oxidation， esterification， etherification， graft copolymerization， cross-link and hybrid. All of these methods can improve the adsorption ability of cellulose for removing heavy metal ions， but still have the limitations of long preparing process， rigorous adsorption conditions and narrow application scope for different kinds of heavy metal ions. Hence， efficient and economical methods for preparing cellulose-based adsorption materials with high selectivity and adsorption ability of heavy metal ions should be discovered through further system research.