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矿化细菌对尾渣渣中的多金属迁移行为的影响:固定和调动的共存

Dinghua Peng¹, Yumei Zhang¹, Xianghan Chen¹

¹Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, PR China.

Journal of hazardous materials

|September 19, 2024

概括

微生物诱导的酸盐沉 (MIPP) 有效地固定了在尾矿中的,特别是当与土壤混合时. 然而,MIPP可以增加铜,和等其他重金属的流动性.

科学领域:

环境科学环境科学
微生物学微生物学
地质化学地质化学

背景情况:

生物矿物化是一种有前途的技术,用于修复重金属 (HM) 污染的场所.
微生物诱导的酸盐沉 (MIPP) 对尾渣中HM行为的影响仍然在很大程度上未被调查.

研究的目的:

这项研究调查了MIPP对尾渣中的多个HM (Cd,Cu,Pb,Zn) 的影响.
这项研究考察了MIPP带有和没有土壤混合对HM固定和移动性的影响.

主要方法:

微生物诱导的酸盐沉 (MIPP) 应用于尾渣.
分析重金属度使用DTPA提取和漂水试验.
进行了矿物学表征,以确定固定和调动机制.

主要成果:

MIPP表现出显著的Cd固定 (43.41%在7天内),通过土壤混合来增强.
DTPA可提取的Cu,Zn和Pb在MIPP治疗后增加.
MIPP降低了Cd2+,Pb2+,Ca2+,Mg2+和Al3+在液中的度,对Cu2+和Zn2+的影响最小.

结论:

MIPP是有效的Cd固定在瓦纳尾矿,与土壤混合提高其性能和可持续性.
这项研究揭示了MIPP下复杂的HM行为,可能会调动Cu,Zn和Pb.
酸盐沉 (例如,Cd(PO4) 2) 驱动不动化,而矿物溶解 (例如,PbZnSiO2) 则有助于动员,为矿山废物整治提供了洞察力.

关键词:

细菌殖民化的细菌殖民.生物矿物化生物矿物化进行表征分析分析.重金属的分数重金属的分数.微生物诱导的酸盐沉

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