Oceans as bioenergy pools for methane production using activated methanogens in waste sewage sludge
The dissolved CO2 that causes ocean acidification has great potential for bioenergy production. In this study, we demonstrate that activated methanogens in waste sewage sludge (WSS) are useful for converting bicarbonate in seawater into methane. These activated methanogens were adapted in different...
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ftrepec:oai:RePEc:eee:appene:v:202:y:2017:i:c:p:399-407 2024-04-14T08:17:38+00:00 Oceans as bioenergy pools for methane production using activated methanogens in waste sewage sludge Mohd Yasin, Nazlina Haiza Ikegami, Azusa Wood, Thomas K. Yu, Chang-Ping Haruyama, Tetsuya Takriff, Mohd Sobri Maeda, Toshinari http://www.sciencedirect.com/science/article/pii/S0306261917307286 unknown http://www.sciencedirect.com/science/article/pii/S0306261917307286 article ftrepec 2024-03-19T10:41:04Z The dissolved CO2 that causes ocean acidification has great potential for bioenergy production. In this study, we demonstrate that activated methanogens in waste sewage sludge (WSS) are useful for converting bicarbonate in seawater into methane. These activated methanogens were adapted in different seawater sources for methane production through repeated batch experiments that resulted in an increase of 300–400 fold in the methane yield. During these repeated batch experiments, the microbial communities in WSS adapted to the high salinity of seawater to generate more methane. Microbial community analysis showed the dominance of Achromobacter xylosoxidans, Serrati sp. and methanogens including Methanobacterium sp., Methanosarcina sp., and Methanosaeta concillii. Using a 13C-labeled isotope, we demonstrate that 81% of the methane is derived from microbial conversion of NaH13CO2 in artificial seawater. Therefore, this study shows that oceans, with the largest surface area on Earth, have a potential as a substrate for methane energy production via an acclimated consortium approach. Carbon dioxide; Ocean acidification; Methanogens; Waste sewage sludge; Methane; Article in Journal/Newspaper Ocean acidification RePEc (Research Papers in Economics) |
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RePEc (Research Papers in Economics) |
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The dissolved CO2 that causes ocean acidification has great potential for bioenergy production. In this study, we demonstrate that activated methanogens in waste sewage sludge (WSS) are useful for converting bicarbonate in seawater into methane. These activated methanogens were adapted in different seawater sources for methane production through repeated batch experiments that resulted in an increase of 300–400 fold in the methane yield. During these repeated batch experiments, the microbial communities in WSS adapted to the high salinity of seawater to generate more methane. Microbial community analysis showed the dominance of Achromobacter xylosoxidans, Serrati sp. and methanogens including Methanobacterium sp., Methanosarcina sp., and Methanosaeta concillii. Using a 13C-labeled isotope, we demonstrate that 81% of the methane is derived from microbial conversion of NaH13CO2 in artificial seawater. Therefore, this study shows that oceans, with the largest surface area on Earth, have a potential as a substrate for methane energy production via an acclimated consortium approach. Carbon dioxide; Ocean acidification; Methanogens; Waste sewage sludge; Methane; |
format |
Article in Journal/Newspaper |
author |
Mohd Yasin, Nazlina Haiza Ikegami, Azusa Wood, Thomas K. Yu, Chang-Ping Haruyama, Tetsuya Takriff, Mohd Sobri Maeda, Toshinari |
spellingShingle |
Mohd Yasin, Nazlina Haiza Ikegami, Azusa Wood, Thomas K. Yu, Chang-Ping Haruyama, Tetsuya Takriff, Mohd Sobri Maeda, Toshinari Oceans as bioenergy pools for methane production using activated methanogens in waste sewage sludge |
author_facet |
Mohd Yasin, Nazlina Haiza Ikegami, Azusa Wood, Thomas K. Yu, Chang-Ping Haruyama, Tetsuya Takriff, Mohd Sobri Maeda, Toshinari |
author_sort |
Mohd Yasin, Nazlina Haiza |
title |
Oceans as bioenergy pools for methane production using activated methanogens in waste sewage sludge |
title_short |
Oceans as bioenergy pools for methane production using activated methanogens in waste sewage sludge |
title_full |
Oceans as bioenergy pools for methane production using activated methanogens in waste sewage sludge |
title_fullStr |
Oceans as bioenergy pools for methane production using activated methanogens in waste sewage sludge |
title_full_unstemmed |
Oceans as bioenergy pools for methane production using activated methanogens in waste sewage sludge |
title_sort |
oceans as bioenergy pools for methane production using activated methanogens in waste sewage sludge |
url |
http://www.sciencedirect.com/science/article/pii/S0306261917307286 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://www.sciencedirect.com/science/article/pii/S0306261917307286 |
_version_ |
1796316863436685312 |