摘要
农田土壤遭受重金属复合污染的问题不容忽视,亟须深入的理论研究和行之有效的修复技术。黏土矿物在钝化农田土壤重金属的研究中展现了良好的钝化效果和应用前景。通过搜集近年来黏土矿物在修复重金属污染农田土壤方面的相关文献,介绍蒙脱石等常用黏土矿物的结构特性,综述了黏土矿物对重金属的钝化机制,综合分析了黏土矿物对重金属的钝化效果,探讨了黏土矿物吸附能力、黏土矿物施加量和土壤pH、土壤水分对钝化效果的影响。提出黏土矿物钝化重金属的稳定性以及持久性、黏土矿物改性以及黏土矿物与其他材料复配是未来研究的重点,以期对未来黏土矿物钝化修复农田土壤重金属的理论研究和生产实践提供参考。
The problem of heavy metal pollution in farmland soil cannot be ignored,and there is an urgent need for in-depth theoretical research and effective remediation techniques.Clay minerals have shown good passivation effects and application prospects in the study of passivating heavy metals in farmland soil.This article collects relevant literature on the use of clay minerals in the remediation of heavy metal contaminated farmland soil in recent years,introduces the structural characteristics of commonly used clay minerals such as montmorillonite,summarizes the passivation mechanism of clay minerals on heavy metals,comprehensively analyzes the passivation effect of clay minerals on heavy metals,explores the influence of clay mineral adsorption capacity,application amount of clay minerals,soil pH,and soil moisture on passivation effect,and proposes that the stability and persistence of clay mineral passivation of heavy metals,modification of clay minerals,and combination of clay minerals with other materials are the focus of future research,in order to provide reference for theoretical research and production practice of clay mineral passivation remediation of heavy metals in farmland soil.
作者
鲁先科
杜俊
栾文楼
LU Xian-ke;DU Jun;LUAN Wen-lou(Hebei GEO University,Shijiazhuang 050031,China;Hebei Key Laboratory of Green Development of Rock and Mineral Materials,Hebei GEO University,Shijiazhuang 050031,China)
出处
《河北地质大学学报》
2024年第3期80-92,共13页
Journal of Hebei Geo University
基金
国家自然科学基金区域创新发展联合基金(U21A2023)。
关键词
黏土矿物
重金属
土壤
钝化
clay minerals
heavy metals
soil
passivation
