磁性吸附材料在土壤重金属污染修复中的应用价值与不足

Application Value and Deficiencies of Magnetic Adsorption Materials in Soil Heavy Metal Pollution Remediation

当前我国土壤环境重金属污染问题依然突出,形势不容乐观.土壤重金属污染如何进行有效的控制与修复已经成为当前研究的热点和难点.传统的修复方法,如固化稳定化、土壤淋洗、植物修复、电动修复等存在修复效率低下或二次污染等问题,难以真正实现土壤重金属污染绿色修复.磁性吸附材料在土壤重金属污染修复中表现出良好的性能,在外源磁场作用下能够实现重金属污染物与土壤的分离,真正实现土壤重金属污染绿色修复,也为土壤重金属污染修复研究提供新的思路与选择.本文通过分析土壤重金属污染修复现状与磁性吸附材料对环境介质中重金属离子的吸附效应,提出了磁性吸附材料用于土壤重金属修复的优势与不足,指出了今后磁性吸附材料在土壤重金属污染修复中的应用研究方向.

At present,the problem of heavy metal pollution in soil is still serious.How to control and repair heavy metal pollution in soil has become one of the hot and difficult issues.Traditional remediation methods,such as stabilization/solidification technology,soil flushing,phytoremediation and electric remediation,have problems of low remediation efficiency and secondary pollution,which make it difficult to realize the green remediation of heavy metal pollution in soil.Magnetic adsorption materials show good performance in the remediation of heavy metal pollution in soil.Under the action of external magnetic field,it can separate heavy metal pollutants from soil,meet the needs of green remediation of heavy metal pollution in soil,and provide new ideas and options for the remediation of heavy metal pollution in soil.In this paper,by analyzing the current situation of heavy metal pollution remediation in soil and the adsorption effect of magnetic adsorption materials on heavy metal,the advantages and disadvantages of magnetic adsorption materials for heavy metal remediation in soil are put forward,and the research direction of magnetic adsorption materials for heavy metal remediation in soil in the future is pointed out.