深盐层储氢对地球化学和微生物的潜在影响

IF 3.6 4区 生物学 Q2 ENVIRONMENTAL SCIENCES
Kara A. Tinker, Winston Anthony, Meghan Brandi, Sam Flett, Christopher E. Bagwell, Chuck Smallwood, Ryan Davis, Djuna Gulliver
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引用次数: 0

摘要

氢是一种有价值的商品,是一种很有前途的可变能源生产能源载体。氢气的储存可以通过在地下储层中注入氢气或氢气/甲烷气体混合物来实现。然而,可能影响储存氢的地球化学和生物反应尚不清楚。因此,我们从位于伊利诺伊州南部圣彼得地层的深层蓄水层中收集了样本。储层物质主要为含硫和铁矿的石英,流体主要成分为氯化物和硫酸盐。16S rRNA基因扩增子测序显示微生物群落生物量低,不含明显的耗氢菌。接下来,我们富集了一个野外样本以增加生物量,并完成了宏基因组分析,发现存在少量与氢消耗相关的基因。然后,我们在储层条件下完成了一系列反应器实验,模拟了15% H2/85% CH4气体的短期储氢,高回采情景。我们发现反应器实验中地球化学和微生物学的变化很小。这项工作表明,短期储存可能是非常成功的,尽管需要完成大量额外的工作,以准确评估与长期氢储存方案相关的风险。我们必须继续扩大对盐水含水层中存在的动力学的理解,并为氢储存如何影响地下地质储存环境提供新的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Identifying Potential Geochemical and Microbial Impacts of Hydrogen Storage in a Deep Saline Aquifer

Identifying Potential Geochemical and Microbial Impacts of Hydrogen Storage in a Deep Saline Aquifer

Hydrogen is valuable commodity and a promising energy carrier for variable energy production. Storage of hydrogen may occur through injection of hydrogen or a hydrogen/methane gas blend in subsurface reservoirs. However, the geochemical and biological reactions that may impact the stored hydrogen are not yet understood. Therefore, we collected samples from a deep storage aquifer located in the St. Peter Formation in southern Illinois. The reservoir material was primarily quartz with sulphur and iron deposits, while the major constituents of the fluid were chloride and sulphate. 16S rRNA gene amplicon sequencing revealed a low biomass microbial community that contained no obvious hydrogen-consuming bacteria. Next, we enriched a field sample to increase the biomass and completed a metagenomic analysis, finding a low number of genes present that are associated with hydrogen consumption. Then, we completed a series of reactor experiments under reservoir conditions with 15% H2/85% CH4 gas simulating a short-term hydrogen storage, high withdrawal scenario. We found minimal changes in the geochemistry or microbiology for the reactor experiments. This work suggests that short-term storage may be highly successful, although significant additional work needs to be completed in order to accurately evaluate the risks associated with long-term hydrogen storage scenarios. It is essential we continue to expand our understanding of the dynamics present in saline aquifers and provide new insights into how hydrogen storage may impact underground geological storage environments.

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来源期刊
Environmental Microbiology Reports
Environmental Microbiology Reports ENVIRONMENTAL SCIENCES-MICROBIOLOGY
CiteScore
6.00
自引率
3.00%
发文量
91
审稿时长
3.0 months
期刊介绍: The journal is identical in scope to Environmental Microbiology, shares the same editorial team and submission site, and will apply the same high level acceptance criteria. The two journals will be mutually supportive and evolve side-by-side. Environmental Microbiology Reports provides a high profile vehicle for publication of the most innovative, original and rigorous research in the field. The scope of the Journal encompasses the diversity of current research on microbial processes in the environment, microbial communities, interactions and evolution and includes, but is not limited to, the following: the structure, activities and communal behaviour of microbial communities microbial community genetics and evolutionary processes microbial symbioses, microbial interactions and interactions with plants, animals and abiotic factors microbes in the tree of life, microbial diversification and evolution population biology and clonal structure microbial metabolic and structural diversity microbial physiology, growth and survival microbes and surfaces, adhesion and biofouling responses to environmental signals and stress factors modelling and theory development pollution microbiology extremophiles and life in extreme and unusual little-explored habitats element cycles and biogeochemical processes, primary and secondary production microbes in a changing world, microbially-influenced global changes evolution and diversity of archaeal and bacterial viruses new technological developments in microbial ecology and evolution, in particular for the study of activities of microbial communities, non-culturable microorganisms and emerging pathogens.
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