Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.2001740117 |
Biocement stabilization of an experimental-scale artificial slope and the reformation of iron-rich crusts | |
Alan Levett; Emma J. Gagen; Yitian Zhao; Paulo M. Vasconcelos; Gordon Southam | |
2020-07-21 | |
发表期刊 | Proceedings of the National Academy of Sciences
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出版年 | 2020 |
英文摘要 | Novel biotechnologies are required to remediate iron ore mines and address the increasing number of tailings (mine waste) dam collapses worldwide. In this study, we aimed to accelerate iron reduction and oxidation to stabilize an artificial slope. An open-air bioreactor was inoculated with a mixed consortium of microorganisms capable of reducing iron. Fluid from the bioreactor was allowed to overflow onto the artificial slope. Carbon sources from the bioreactor fluid promoted the growth of a surface biofilm within the artificial slope, which naturally aggregated the crushed grains. The biofilms provided an organic framework for the nucleation of iron oxide minerals. Iron-rich biocements stabilized the artificial slope and were significantly more resistant to physical deformation compared with the control experiment. These biotechnologies highlight the potential to develop strategies for mine remediation and waste stabilization by accelerating the biogeochemical cycling of iron. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/286822 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Alan Levett,Emma J. Gagen,Yitian Zhao,et al. Biocement stabilization of an experimental-scale artificial slope and the reformation of iron-rich crusts[J]. Proceedings of the National Academy of Sciences,2020. |
APA | Alan Levett,Emma J. Gagen,Yitian Zhao,Paulo M. Vasconcelos,&Gordon Southam.(2020).Biocement stabilization of an experimental-scale artificial slope and the reformation of iron-rich crusts.Proceedings of the National Academy of Sciences. |
MLA | Alan Levett,et al."Biocement stabilization of an experimental-scale artificial slope and the reformation of iron-rich crusts".Proceedings of the National Academy of Sciences (2020). |
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