Impacts of fracking fluids on microbial communities in shale basins

压裂液对页岩盆地微生物群落的影响

• 批准号: 2439162
• 金额: --
• 依托单位: University of Bristol
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2439162
• 关键词: Impacts; fracking; fluids; microbial; communities; Impacts; fracking; fluids; microbial; communities

Introduction of fracking injection fluids to groundwater environments has the potential to alter the composition and function of resident microbial communities. Although several recent studies measured microbial diversities and activities in hydraulically fractured shales and associated waters, the potential impacts on resident microbial communities of fracking fluids, flowback and produced water are unknown. These fluids can change the chemistry of the microbial habitat, for example, by changing the availability and type of substrate for metabolism, the redox state, pH, and salinity, as well as physical parameters such as pressure. This project will investigate the potential effects of fracking fluids on microbial communities using a combined experimental and computer modelling approach.Laboratory-based microcosm experiments will be used to test the response of microbial communities to fracking fluids and related changing environmental conditions, which will be manipulated in the laboratory. Geochemical modelling will be used to further assess the potential effects of fracking fluids and associated environmental changes on the growth rates of near-surface and sub-surface microorganisms utilizing a range of different metabolic processes under field specific conditions. Overall, this work will enable better assessment of the environmental risks of fracking and will enable the student to pursue careers in academia, environmental consulting, industry or the public-sector.

将压裂注射液引入地下水环境有可能改变居民微生物群落的组成和功能。尽管最近的一些研究测量了液压骨折的页岩和相关水的微生物多样性和活性，但对压裂液，流动和产生水的居民微生物群落的潜在影响尚不清楚。这些流体可以通过改变代谢，氧化还原态，pH和盐度的底物以及诸如压力等物理参数的底物的可用性和底物类型来改变微生物栖息地的化学性质。该项目将使用合并的实验和计算机建模方法研究压裂流体对微生物群落的潜在影响。基于实验室的缩影实验将用于测试微生物群落对压裂流体和相关变化环境条件的响应，在实验室中可以操纵这种环境条件。地球化学模型将用于进一步评估压裂流体的潜在影响以及相关的环境变化对利用一系列不同代谢过程在现场特定条件下的一系列不同代谢过程的近地表和地下微生物的生长速率。总体而言，这项工作将使能够更好地评估压裂环境风险，并使学生能够从事学术界，环境咨询，行业或公共部门的职业。