An Evaluation of Subsurface Microbial Activity Conditional to Subsurface Temperature, Porosity, and Permeability at North American Carbon Sequestration Sites

doi:10.2172/1327812

GSTDTAP > 地球科学

DOI	10.2172/1327812
报告编号	NETL-TRS--8-2016
来源ID	OSTI ID: 1327812
	An Evaluation of Subsurface Microbial Activity Conditional to Subsurface Temperature, Porosity, and Permeability at North American Carbon Sequestration Sites
	Wilson, B.; Mordensky, S.; Verba, Circe; Rabjohns, K.; Colwell, F.
	2016-06-21
出版年	2016
页数	28
语种	英语
国家	美国
领域	地球科学
英文摘要	Several nations, including the United States, recognize global climate change as a force transforming the global ecosphere. Carbon dioxide (CO₂) is a greenhouse gas that contributes to the evolving climate. Reduction of atmospheric CO₂ levels is a goal for many nations and carbon sequestration which traps CO₂ in the Earthâs subsurface is one method to reduce atmospheric CO₂ levels. Among the variables that must be considered in developing this technology to a national scale is microbial activity. Microbial activity or biomass can change rock permeability, alter artificial seals around boreholes, and play a key role in biogeochemistry and accordingly may determine how CO₂ is sequestered underground. Certain physical parameters of a reservoir found in literature (e.g., temperature, porosity, and permeability) may indicate whether a reservoir can host microbial communities. In order to estimate which subsurface formations may host microbes, this report examines the subsurface temperature, porosity, and permeability of underground rock formations that have high potential to be targeted for CO₂ sequestration. Of the 268 North American wellbore locations from the National Carbon Sequestration Database (NATCARB; National Energy and Technology Laboratory, 2015) and 35 sites from Nelson and Kibler (2003), 96 sequestration sites contain temperature data. Of these 96 sites, 36 sites have temperatures that would be favorable for microbial survival, 48 sites have mixed conditions for supporting microbial populations, and 11 sites would appear to be unfavorable to support microbial populations. Future studies of microbe viability would benefit from a larger database with more formation parameters (e.g. mineralogy, structure, and groundwater chemistry), which would help to increase understanding of where CO₂ sequestration could be most efficiently implemented.
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来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/7131
专题	地球科学
推荐引用方式 GB/T 7714	Wilson, B.,Mordensky, S.,Verba, Circe,et al. An Evaluation of Subsurface Microbial Activity Conditional to Subsurface Temperature, Porosity, and Permeability at North American Carbon Sequestration Sites,2016.