改性生物炭固定土壤中重金属机理的研究进展
Advances in research on the mechanism of modified biochar to immobilize heavy metals in soil
毛纪鹏 1乔怡娜 1熊健 2贾梦晔 1刘娇琴 1贺增弟 1晋日亚 1张晶晶1
作者信息
- 1. 中北大学 环境与安全工程学院,山西 太原 030051
- 2. 西藏大学 生态环境学院,西藏 拉萨 850000
- 折叠
摘要
固定化是一种降低土壤重金属毒性的有效方法,改性生物炭固定重金属的能力已取得了显著成果,其在土壤修复中得到广泛关注.但改性生物炭在污染土壤中固定重金属的综合机理需进一步探究,因此运用CiteSpace数据分析软件,以氧阴离子型重金属As和阳离子型重金属Cd为例对改性生物炭固定土壤中重金属的机理进行分析,综述了其氧化还原、表面共沉淀、络合、离子交换及静电吸引的作用机制.对改性生物炭增强固定土壤重金属不同机理的原因和方法进行总结,对其处理土壤重金属污染的前景进行了展望,为改性生物炭治理土壤重金属污染的应用提供参考.
Abstract
Immobilization is an effective method to reduce the toxicity of heavy metals in soil.The ability of modified biochar to immobilize heavy metals has achieved remarkable results,and it has been widely a concern in soil remediation.However,the comprehensive mechanism of immobilizing heavy metals in con-taminated soil by modified biochar needs further exploration.Therefore,CiteSpace data analysis software was used to analyze the mechanism of fixing heavy metals in soil by modified biochar.Oxygen-anionic heavy metals As and cationic heavy metals Cd were taken as examples to analyze the mechanism of immo-bilizing heavy metals in soil by modified biochar.The mechanisms of redox,surface coprecipitation,compl-exation,ion exchange,and electrostatic attraction were reviewed.The reasons and methods of different mechanisms of modified biochar enhancing immobilized soil heavy metal were summarized,and the pros-pect of its treatment of heavy metal pollution in soil was prospected,which provided a reference for the ap-plication of modified biochar in the treatment of heavy metal pollution in soil.
关键词
改性生物炭/土壤/As/Cd/固定机理Key words
modified biochar/soil/As/Cd/immobilization mechanism引用本文复制引用
基金项目
西藏自治区科技计划中央引导地方项目(2022)(XZ202202YD0027C)
中央财政支持地方高校发展专项(2022年1号)
中央财政支持地方高校发展专项(2023年1号)
西藏自治区科技计划重点研发计划(2021)(XZ202101ZY0012G)
山西省研究生创新项目(2022Y589)
出版年
2024
NETL
NSTL
万方数据