Physicochemical and microbiological effects of geological biomethane storage in deep aquifers: introduction of O<sub>2</sub> as a cocontaminant

Haddad, P. G.; Ranchou-Peyruse, M.; Guignard, M.; Mura, J.; Castéran, F.; Sénéchal, P.; Larregieu, M.; Isaure, M.-P.; Moonen, P.; Le Hécho, I.; Hoareau, G.; Chiquet, P.; Caumette, G.; Petit, A.; Cezac, P.; Ranchou-Peyruse, A.

doi:10.1039/d3va00086a

Environ. Sci.: Adv.

2023

DOI: 10.1039/d3va00086a

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Physicochemical and microbiological effects of geological biomethane storage in deep aquifers: introduction of O₂ as a cocontaminant

P. G. Haddad,

M. Ranchou-Peyruse,

M. Guignard

et al.

Abstract: The massive arrival of biomethane in geological energy storage will lead to a co-injection of O2 used during the gas desulfurization process. O2 induces changes in the microbial community and interactions with the stored gas and formation water.

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Cited by 2 publications

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Assessment of the in situ biomethanation potential of a deep aquifer used for natural gas storage

Ranchou-Peyruse,

Guignard,

Chiquet

et al. 2024

FEMS Microbiology Ecology

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The dihydrogen (H2) sector is undergoing development and will require massive storage solutions. To minimize costs, the conversion of UGS sites, such as deep aquifers, used for natural gas storage into future underground hydrogen storage (UHS) sites is the favored scenario. However, these sites contain microorganisms capable of consuming H2, mainly sulfate reducers and methanogens. Methanogenesis is therefore expected but its intensity must be evaluated. Here, in a deep aquifer used for UGS, 17 sites were sampled, with low sulfate concentrations ranging from 21.9 to 197.8 µM and a slow renewal of formation water. H2 selected communities mainly were composed of the families Methanobacteriaceae and Methanothermobacteriaceae and the genera Desulfovibrio, Thermodesulfovibrio and Desulforamulus. Experiments were done under different conditions, and sulfate reduction, as well as methanogenesis, were demonstrated in the presence of a H2 or H2/CO2 (80/20) gas phase, with or without calcite/site rock. These metabolisms led to an increase in pH up to 10.2 under certain conditions (without CO2). The results suggest competition for CO2 between lithoautotrophs and carbonate mineral precipitation, which could limit microbial H2 consumption.

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Assessment of the in situ biomethanation potential of a deep aquifer used for natural gas storage

Ranchou-Peyruse,

Guignard,

Chiquet

et al. 2024

FEMS Microbiology Ecology

Self Cite

View full text Add to dashboard Cite

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Experimental simulation of H2 coinjection via a high-pressure reactor with natural gas in a low-salinity deep aquifer used for current underground gas storage

Mura,

Ranchou-Peyruse,

Guignard

et al. 2024

Front. Microbiol.

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If dihydrogen (H2) becomes a major part of the energy mix, massive storage in underground gas storage (UGS), such as in deep aquifers, will be needed. The development of H2 requires a growing share of H2 in natural gas (and its current infrastructure), which is expected to reach approximately 2% in Europe. The impact of H2 in aquifers is uncertain, mainly because its behavior is site dependent. The main concern is the consequences of its consumption by autochthonous microorganisms, which, in addition to energy loss, could lead to reservoir souring and alter the petrological properties of the aquifer. In this work, the coinjection of 2% H2 in a natural gas blend in a low-salinity deep aquifer was simulated in a three-phase (aquifer rock, formation water, and natural gas/H2 mix) high-pressure reactor for 3 months with autochthonous microorganisms using a protocol described in a previous study. This protocol was improved by the addition of protocol coupling experimental measures and modeling to calculate the pH and redox potential of the reactor. Modeling was performed to better analyze the experimental data. As in previous experiments, sulfate reduction was the first reaction to occur, and sulfate was quickly consumed. Then, formate production, acetogenesis, and methanogenesis occurred. Overall, H2 consumption was mainly caused by methanogenesis. Contrary to previous experiments simulating H2 injection in aquifers of higher salinity using the same protocol, microbial H2 consumption remained limited, probably because of nutrient depletion. Although calcite dissolution and iron sulfide mineral precipitation likely occurred, no notable evolution of the rock phase was observed after the experiment. Overall, our results suggested that H2 can be stable in this aquifer after an initial loss. More generally, aquifers with low salinity and especially low electron acceptor availability should be favored for H2 costorage with natural gas.

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Physicochemical and microbiological effects of geological biomethane storage in deep aquifers: introduction of O₂ as a cocontaminant

Abstract: The massive arrival of biomethane in geological energy storage will lead to a co-injection of O2 used during the gas desulfurization process. O2 induces changes in the microbial community and interactions with the stored gas and formation water.

Cited by 2 publications

References 56 publications

Assessment of the in situ biomethanation potential of a deep aquifer used for natural gas storage

Assessment of the in situ biomethanation potential of a deep aquifer used for natural gas storage

Experimental simulation of H2 coinjection via a high-pressure reactor with natural gas in a low-salinity deep aquifer used for current underground gas storage

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Physicochemical and microbiological effects of geological biomethane storage in deep aquifers: introduction of O2 as a cocontaminant

Abstract: The massive arrival of biomethane in geological energy storage will lead to a co-injection of O2 used during the gas desulfurization process. O2 induces changes in the microbial community and interactions with the stored gas and formation water.

Cited by 2 publications

References 56 publications

Assessment of the in situ biomethanation potential of a deep aquifer used for natural gas storage

Assessment of the in situ biomethanation potential of a deep aquifer used for natural gas storage

Experimental simulation of H2 coinjection via a high-pressure reactor with natural gas in a low-salinity deep aquifer used for current underground gas storage

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Product

Resources

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Physicochemical and microbiological effects of geological biomethane storage in deep aquifers: introduction of O₂ as a cocontaminant