铁改基生物炭用于矿山土壤中的多金属稳定:定量机械学见解,DFT分析和微生物社区转移
Xin Sun1, Qin Yuan1, Xiangfei Jiao1
1School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China.
Journal of environmental management
|November 13, 2025
概括
这项研究引入了铁协同生物炭 (Fe-Ca-BC) 用于修复重金属污染的土壤. 这种新型生物炭有效地稳定了铜,和等金属,改善了土壤健康和微生物群落.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 材料科学 材料科学 材料科学
背景情况:
- 采矿区经常遭受严重的土壤退化和混合重金属 (Cu,Pb,Cd) 的高度.
- 有效和持久的整治材料对于恢复这些受污染的生态系统至关重要.
研究的目的:
- 开发和评估一种由废米和蛋合成的铁协同生物炭 (Fe-Ca-BC),用于重金属整治.
- 研究Fe-Ca-BC的稳定机制和对土壤特性和微生物群落的影响.
主要方法:
- 使用协同战略合成铁改性基生物炭 (Fe-Ca-BC).
- 在严重污染的土壤中应用Fe-Ca-BC,并评估60天内的重金属 (Cu,Pb,Cd) 减少.
- 稳定机制的分配,密度函数理论 (DFT) 的计算,以及对土壤物理化学性质和微生物群落的分析.
主要成果:
- 3%的Fe-Ca-BC应用显著减少了可用的Cu,Pb和Cd分别为75.47%,63.93%和43.56%,表现优于单元生物炭.
- 稳定机制包括物理吸附/离子交换,共同沉,金属复合和微生物贡献,由DFT计算显示自发化学吸收证实.
- Fe-Ca-BC的应用改善了土壤的pH值,阴离子交换能力,有机物质,并丰富了耐重金属的微生物群落,表明了生物炭驱动的微生物材料协同作用.
结论:
- Fe-Ca-BC 是一种高效的绿色材料,用于修复矿区中重金属污染的土壤.
- 协同策略通过多种机制增强生物炭稳定性和重金属固定.
- 这项研究为有效的土壤修复提供了对材料-微生物-金属相互作用的新见解.
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