Bioconversion Pathway of CO2 in the Presence of Ethanol by Methanogenic Enrichments from Production Water of a High-Temperature Petroleum Reservoir

Transformation of CO2 in both carbon capture and storage (CCS) to biogenic methane in petroleum reservoirs is an attractive and promising strategy for not only mitigating the greenhouse impact but also facilitating energy recovery in order to meet societal needs for energy. Available sources of petr...

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Bibliographic Details
Published in:Energies (Basel) 2019-03, Vol.12 (5), p.918
Main Authors: Yang, Guang-Chao, Zhou, Lei, Mbadinga, Serge, Gu, Ji-Dong, Mu, Bo-Zhong
Format: Article
Language:English
Subjects:
Acetic acid
Alcohol
Alcohol dehydrogenase
Bicarbonates
Bioconversion
Biodegradation
Bioreactors
Carbon dioxide
Chromatography
Clean energy
Clean technology
CO2 bioconversion
Cooperation
Crude oil
Deoxyribonucleic acid
DNA
Economic conditions
Economic incentives
Energy recovery
Enhanced oil recovery
Enrichment
Ethanol
High temperature
Hydrogen
Metabolism
Methane
Methanogenesis
Methanogenic archaea
Methanogenic bacteria
Microbial activity
Microorganisms
NADP
Oil fields
Oil recovery
oil reservoir
Oil reservoirs
Oxidation
Phylogenetics
Reservoirs
Trace elements
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Summary:Transformation of CO2 in both carbon capture and storage (CCS) to biogenic methane in petroleum reservoirs is an attractive and promising strategy for not only mitigating the greenhouse impact but also facilitating energy recovery in order to meet societal needs for energy. Available sources of petroleum in the reservoirs reduction play an essential role in the biotransformation of CO2 stored in petroleum reservoirs into clean energy methane. Here, the feasibility and potential on the reduction of CO2 injected into methane as bioenergy by indigenous microorganisms residing in oilfields in the presence of the fermentative metabolite ethanol were assessed in high-temperature petroleum reservoir production water. The bio-methane production from CO2 was achieved in enrichment with ethanol as the hydrogen source by syntrophic cooperation between the fermentative bacterium Synergistetes and CO2-reducing Methanothermobacter via interspecies hydrogen transfer based upon analyses of molecular microbiology and stable carbon isotope labeling. The thermodynamic analysis shows that CO2-reducing methanogenesis and the methanogenic metabolism of ethanol are mutually beneficial at a low concentration of injected CO2 but inhibited by the high partial pressure of CO2. Our results offer a potentially valuable opportunity for clean bioenergy recovery from CCS in oilfields.
ISSN:1996-1073
1996-1073
DOI:10.3390/en12050918