Microbial-induced carbonate precipitation applicability with the methane hydrate-bearing layer microbe
Production of methane gas from the methane-hydrate-bearing layer below the deep-ocean floor is expected to be crucial in the future of energy resources worldwide. During the methane gas-production phase from the methane hydrate with the depressurisation method, the depressurising zone around the pro...
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Online Access: | https://doi.org/10.1016/j.jngse.2020.103490 http://infoscience.epfl.ch/record/280721 |
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ftinfoscience:oai:infoscience.epfl.ch:280721 2023-05-15T17:11:14+02:00 Microbial-induced carbonate precipitation applicability with the methane hydrate-bearing layer microbe Hata, Toshiro Saracho, Alexandra Clara Haigh, Stuart K. Yoneda, Jun Yamamoto, Koji 2020-10-07T00:22:21Z https://doi.org/10.1016/j.jngse.2020.103490 http://infoscience.epfl.ch/record/280721 unknown Oxford, ELSEVIER SCI LTD isi:000571076000002 doi:10.1016/j.jngse.2020.103490 http://infoscience.epfl.ch/record/280721 http://infoscience.epfl.ch/record/280721 Text 2020 ftinfoscience https://doi.org/10.1016/j.jngse.2020.103490 2023-02-13T23:01:55Z Production of methane gas from the methane-hydrate-bearing layer below the deep-ocean floor is expected to be crucial in the future of energy resources worldwide. During the methane gas-production phase from the methane hydrate with the depressurisation method, the depressurising zone around the production well will lose strength, causing a potential geohazard. In this study, a bio-mediated treatment to reinforce the methane hydrate layers is proposed. A urease-producing bacterium, Sporosarcina newyorkensis, was isolated for the first time from a pressure core sampled from the Nankai Trough seabed methane-hydrate-bearing layer in Japan. This newly isolated species can survive deep-seabed environments and also enhance the population under nutrient-rich conditions. In addition, it is uniquely characterised with higher urease activities under low-temperature conditions in comparison to the well-known bacterium S. pasteurii. The results of triaxial tests suggest that this bacterium can catalyse the precipitation of calcium carbonate through urea hydrolysis, which enhances the soil strength below the ocean floor and hence reinforces the production well. This will not only make methane gas extraction safer but may also reduce sand production in the well, making extraction operations more efficient and cost effective. Text Methane hydrate EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) Journal of Natural Gas Science and Engineering 81 103490 |
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EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) |
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ftinfoscience |
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Production of methane gas from the methane-hydrate-bearing layer below the deep-ocean floor is expected to be crucial in the future of energy resources worldwide. During the methane gas-production phase from the methane hydrate with the depressurisation method, the depressurising zone around the production well will lose strength, causing a potential geohazard. In this study, a bio-mediated treatment to reinforce the methane hydrate layers is proposed. A urease-producing bacterium, Sporosarcina newyorkensis, was isolated for the first time from a pressure core sampled from the Nankai Trough seabed methane-hydrate-bearing layer in Japan. This newly isolated species can survive deep-seabed environments and also enhance the population under nutrient-rich conditions. In addition, it is uniquely characterised with higher urease activities under low-temperature conditions in comparison to the well-known bacterium S. pasteurii. The results of triaxial tests suggest that this bacterium can catalyse the precipitation of calcium carbonate through urea hydrolysis, which enhances the soil strength below the ocean floor and hence reinforces the production well. This will not only make methane gas extraction safer but may also reduce sand production in the well, making extraction operations more efficient and cost effective. |
format |
Text |
author |
Hata, Toshiro Saracho, Alexandra Clara Haigh, Stuart K. Yoneda, Jun Yamamoto, Koji |
spellingShingle |
Hata, Toshiro Saracho, Alexandra Clara Haigh, Stuart K. Yoneda, Jun Yamamoto, Koji Microbial-induced carbonate precipitation applicability with the methane hydrate-bearing layer microbe |
author_facet |
Hata, Toshiro Saracho, Alexandra Clara Haigh, Stuart K. Yoneda, Jun Yamamoto, Koji |
author_sort |
Hata, Toshiro |
title |
Microbial-induced carbonate precipitation applicability with the methane hydrate-bearing layer microbe |
title_short |
Microbial-induced carbonate precipitation applicability with the methane hydrate-bearing layer microbe |
title_full |
Microbial-induced carbonate precipitation applicability with the methane hydrate-bearing layer microbe |
title_fullStr |
Microbial-induced carbonate precipitation applicability with the methane hydrate-bearing layer microbe |
title_full_unstemmed |
Microbial-induced carbonate precipitation applicability with the methane hydrate-bearing layer microbe |
title_sort |
microbial-induced carbonate precipitation applicability with the methane hydrate-bearing layer microbe |
publisher |
Oxford, ELSEVIER SCI LTD |
publishDate |
2020 |
url |
https://doi.org/10.1016/j.jngse.2020.103490 http://infoscience.epfl.ch/record/280721 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
http://infoscience.epfl.ch/record/280721 |
op_relation |
isi:000571076000002 doi:10.1016/j.jngse.2020.103490 http://infoscience.epfl.ch/record/280721 |
op_doi |
https://doi.org/10.1016/j.jngse.2020.103490 |
container_title |
Journal of Natural Gas Science and Engineering |
container_volume |
81 |
container_start_page |
103490 |
_version_ |
1766068059420753920 |