化学改性沸石对重金属离子去除的研究进展

Research Progress on Removal of Heavy Metal Ions by Chemically Modified Zeolite

随着工业的不断发展,重金属污染程度日益加深,严重危害人类的健康。近年来,化学改性沸石因具有较大的比表面积和较强的离子交换能力,在重金属离子处理领域被广泛应用。然而,在化学改性过程中,由于使用酸、碱、无机盐、有机试剂等改性剂,在能耗、成本以及可持续发展方面仍存在一定弊端。因此,开展沸石化学改性方法的研究,使其简单化、工业化、绿色化,具有重要的研究意义与经济效益。本文从沸石的结构层面介绍了沸石化学改性的方法,分析了磁性沸石和纳米沸石的优异性,总结了改性沸石在去除重金属离子方面的应用,并对其未来发展趋势进行展望。

With the continuous development of industry,heavy metal pollution is deepening day by day,which seriously endangers human health.In recent years,chemically modified zeolite has been widely used in the field of heavy metal ions treatment because of its large specific surface area and strong ion exchange capacity.However,due to the use of acid,alkali,inorganic salts and organic reagents as modifiers in the chemical modification process,there are still some drawbacks in terms of energy consumption,cost and sustainable development.Therefore,it is of great significance and economic benefit to carry out the research on chemical modification methods of zeolite to make it simple,industrialized and green.In this paper,the methods of chemically modified zeolite were introduced from the structure level of zeolite,the excellent properties of magnetic zeolite and nanometer zeolite were analyzed,the application of modified zeolite in removing heavy metal ions was summarized,and the future development trend of the modified zeolite was prospected.