生物炭已被广泛应用于修复重金属污染水体与土壤,但其催化性能较差、芳香性较低、吸附点位较少等不足限制了其应用。由铁基化合物和生物炭制备的铁基生物炭复合材料,在优化生物炭性能的同时,能够很好地改善铁基材料易氧化和易团聚的缺点,表现出良好的重金属钝化效果。综述了铁基生物炭复合材料的分类及制备方法,以及该材料对环境重金属污染修复的研究进展,最后指出了铁基生物炭复合材料在实际应用中可能存在的问题。以期为铁基生物炭复合材料在重金属污染修复中的应用提供理论依据。
Biochar has been widely used for remediation of heavy metal contaminated water bodies and soils,but its deficiencies such as poor catalytic performance,low aromaticity,and fewer adsorption sites limit its application.The iron-based biochar composites prepared from iron-based compounds and biochar can well improve the shortcomings of iron-based materials that are easy to oxidise and agglomerate while optimising the performance of biochar,and show good heavy metal passivation effects.This paper reviewed the classification and preparation methods of iron-based biochar composites,as well as the research progress of this material on the remediation of environmental heavy metal pollution,and finally pointed out the possible problems of iron-based biochar composites in practical applications,aiming to provide a theoretical basis for the application of iron-based biochar composites in heavy metal pollution remediation.
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