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矿物−微生物协同处理酸性矿山排水中重金属污染及其生态应用

Synergistic mineral−microbial treatment of heavy metal contamination in acid mine drainage and its ecological applications

  • 摘要: 酸性矿山排水(AMD)作为金矿开采产生的典型环境问题,长期制约行业绿色可持续发展。然而,AMD环境中矿物与微生物间的活跃互作在导致污染形成的同时,也驱动着碳、硫、铁等营养元素的生物地球化学循环,调控重金属归趋及赋存形态的改变,因此基于矿物−微生物协同作用的治理技术在矿山生态环境修复与重建中展现出重要的应用前景。系统综述了金矿AMD场地中矿物−微生物互作的双重角色与机制,详细介绍了AMD环境中微生物介导矿物形成与转化的微观机制及矿物对微生物群落的调控与塑造作用,重点阐述了矿物−微生物互作对AMD场地中重金属迁移、转化与释放的影响,以及该机制在AMD环境中污染治理和生态重建中的应用前景。研究旨在为金矿尾矿污染生态治理提供跨学科理论框架,并基于当前生物修复技术研究的局限性提出潜在策略与研究前景,以推动矿物−微生物协同修复技术从理论走向工程化应用。

     

    Abstract: Acid mine drainage (AMD), a typical environmental problem generated from gold mining, has long constrained the green and sustainable development of the industry. However, the active interactions between minerals and microbes in AMD environments not only drive the formation of pollution but also promote the biogeochemical cycling of carbon, sulfur, iron, and other nutrients, regulating the fate and speciation changes of heavy metals. Therefore, remediation technologies based on mineral−microbe synergism demonstrate significant application prospects in the ecological restoration and reconstruction of mining areas. This review systematically summarized the dual roles and mechanisms of mineral−microbe interactions in AMD sites of gold mines. It detailed the microscopic mechanisms through which microbial communities mediate mineral formation and transformation, as well as the regulatory and shaping effects of minerals on microbial communities, with a focus on the influence of mineral−microbe interactions on the migration, transformation, and release of heavy metals in AMD sites, along with the application prospects of such interactions in pollution control and ecological reconstruction. The research aims to provide an interdisciplinary theoretical framework for the ecological remediation of gold mine tailings and proposes potential strategies and research prospects based on the current limitations of bioremediation technologies, so as to promote the transformation of mineral−microbe synergistic remediation from theory to engineering application.

     

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