The harvested energy using MFCs by enriching saline-alkali tolerant microorganisms from biogas slurry
Summary: Exoelectrogenic biofilms is crucial for the energy generation and wastewater treatment by bioelectrochemical systems. In this study, two kinds of saline-alkali tolerant mixed exoelectrogenic cultures were enriched from biogas slurry. These mixed exoelectrogens produced current densities of...
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Elsevier
2025-08-01
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| Series: | iScience |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004225013306 |
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| author | Sheng-chao Gao Zhen Zhang Yong-dong Li Zhao-ying Su Jin-song Dong Ru-meng Zhang Wen Zhou Hong-xia Ni Yi Chen Ying Liu |
| author_facet | Sheng-chao Gao Zhen Zhang Yong-dong Li Zhao-ying Su Jin-song Dong Ru-meng Zhang Wen Zhou Hong-xia Ni Yi Chen Ying Liu |
| author_sort | Sheng-chao Gao |
| collection | DOAJ |
| description | Summary: Exoelectrogenic biofilms is crucial for the energy generation and wastewater treatment by bioelectrochemical systems. In this study, two kinds of saline-alkali tolerant mixed exoelectrogenic cultures were enriched from biogas slurry. These mixed exoelectrogens produced current densities of 1,034 ± 30 and 974 ± 53 μA·cm−2, which were 1.68 and 1.58 times higher than G. sulfurreducens PCA at pH 9.0, respectively. Under alkaline conditions with the addition of 1.5% NaCl, the maximum current densities for BS-N2 (546.66 ± 139.20 μA·cm−2) and BS-O2 (583 ± 22.91 μA·cm−2) were about 2.45 and 2.61 times higher than G. sulfurreducens PCA, respectively. The BS-O2 exhibited a high power density of 1,109 ± 115 mW·m−2 at pH 9.2 in a microbial fuel cell. The community analysis revealed Proteobacteria as the predominant phylum, with Firmicutes and Bacteroidetes as the dominant families within the biofilms. These findings provide valuable insights for further research on exoelectrogenesis in challenging environments. |
| format | Article |
| id | doaj-art-bb519420aee041a5abeb858a6161a1f7 |
| institution | Kabale University |
| issn | 2589-0042 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj-art-bb519420aee041a5abeb858a6161a1f72025-08-20T03:56:41ZengElsevieriScience2589-00422025-08-0128811306910.1016/j.isci.2025.113069The harvested energy using MFCs by enriching saline-alkali tolerant microorganisms from biogas slurrySheng-chao Gao0Zhen Zhang1Yong-dong Li2Zhao-ying Su3Jin-song Dong4Ru-meng Zhang5Wen Zhou6Hong-xia Ni7Yi Chen8Ying Liu9Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, No. 22 Xinong Road, Yangling, Shaanxi Province 712100, P.R. ChinaShaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, No. 22 Xinong Road, Yangling, Shaanxi Province 712100, P.R. ChinaNingbo Municipal Center for Disease Control and Prevention, Ningbo Key Laboratory of Virus Research, Ningbo 315010, P.R. ChinaShaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, No. 22 Xinong Road, Yangling, Shaanxi Province 712100, P.R. ChinaShaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, No. 22 Xinong Road, Yangling, Shaanxi Province 712100, P.R. ChinaShaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, No. 22 Xinong Road, Yangling, Shaanxi Province 712100, P.R. ChinaShaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, No. 22 Xinong Road, Yangling, Shaanxi Province 712100, P.R. ChinaNingbo Municipal Center for Disease Control and Prevention, Ningbo Key Laboratory of Virus Research, Ningbo 315010, P.R. ChinaNingbo Municipal Center for Disease Control and Prevention, Ningbo Key Laboratory of Virus Research, Ningbo 315010, P.R. China; Corresponding authorShaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, No. 22 Xinong Road, Yangling, Shaanxi Province 712100, P.R. China; Corresponding authorSummary: Exoelectrogenic biofilms is crucial for the energy generation and wastewater treatment by bioelectrochemical systems. In this study, two kinds of saline-alkali tolerant mixed exoelectrogenic cultures were enriched from biogas slurry. These mixed exoelectrogens produced current densities of 1,034 ± 30 and 974 ± 53 μA·cm−2, which were 1.68 and 1.58 times higher than G. sulfurreducens PCA at pH 9.0, respectively. Under alkaline conditions with the addition of 1.5% NaCl, the maximum current densities for BS-N2 (546.66 ± 139.20 μA·cm−2) and BS-O2 (583 ± 22.91 μA·cm−2) were about 2.45 and 2.61 times higher than G. sulfurreducens PCA, respectively. The BS-O2 exhibited a high power density of 1,109 ± 115 mW·m−2 at pH 9.2 in a microbial fuel cell. The community analysis revealed Proteobacteria as the predominant phylum, with Firmicutes and Bacteroidetes as the dominant families within the biofilms. These findings provide valuable insights for further research on exoelectrogenesis in challenging environments.http://www.sciencedirect.com/science/article/pii/S2589004225013306ElectrochemistryMicrobiologyApplied microbiology |
| spellingShingle | Sheng-chao Gao Zhen Zhang Yong-dong Li Zhao-ying Su Jin-song Dong Ru-meng Zhang Wen Zhou Hong-xia Ni Yi Chen Ying Liu The harvested energy using MFCs by enriching saline-alkali tolerant microorganisms from biogas slurry iScience Electrochemistry Microbiology Applied microbiology |
| title | The harvested energy using MFCs by enriching saline-alkali tolerant microorganisms from biogas slurry |
| title_full | The harvested energy using MFCs by enriching saline-alkali tolerant microorganisms from biogas slurry |
| title_fullStr | The harvested energy using MFCs by enriching saline-alkali tolerant microorganisms from biogas slurry |
| title_full_unstemmed | The harvested energy using MFCs by enriching saline-alkali tolerant microorganisms from biogas slurry |
| title_short | The harvested energy using MFCs by enriching saline-alkali tolerant microorganisms from biogas slurry |
| title_sort | harvested energy using mfcs by enriching saline alkali tolerant microorganisms from biogas slurry |
| topic | Electrochemistry Microbiology Applied microbiology |
| url | http://www.sciencedirect.com/science/article/pii/S2589004225013306 |
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