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随着铁碳(Fe-C)共沉机理被越来越多的学者认可,Fe-C共沉物成为近年环境科学领域内的研究热点之一。在探讨铁氧化物和有机质的相互作用及Fe-C共沉物对重金属的吸附研究进展基础上,阐述了共沉物在固定土壤重金属离子方面的潜力:在有机质参与作用下,铁氧化物的表面性质、吸附性能等均发生了规律性变化,这些变化是决定土壤环境中重金属离子迁移转化的前提。在影响因素方面,p H值、有机质含量、铁氧化物种类及表面性质对共沉物的吸附效果影响较为显著。通过研究可以看出,一定条件下Fe-C共沉物所拥有的优良吸附性能将为土壤重金属污染场地修复治理工作提供重要理论基础。
As Fe-C co-precipitation mechanism is recognized by more and more scholars, Fe-C coprecipitation has become one of the hot topics in the field of environmental science in recent years. On the basis of the discussion of the interaction between iron oxide and organic matter and the adsorption of heavy metals by Fe-C coprecipitate, the potential of coprecipitation in the fixation of heavy metal ions in soils is described. Under the action of organic matter, Surface properties, adsorption properties have undergone a regular change, these changes are the prerequisite for the transfer of heavy metal ions in the soil environment. In terms of influencing factors, p H value, organic matter content, iron oxide species and surface properties have a significant effect on the adsorption effect of the coprecipitate. It can be seen from the study that the excellent adsorption properties of the Fe-C coprecipitate under certain conditions will provide an important theoretical basis for the remediation work of the sites contaminated by heavy metals in the soil.