Methane production by acetate dismutation stimulated by Shewanella oneidensis and carbon materials: An alternative to classical CO2 reduction
Xiao, Leilei; Liu, Fanghua; Lichtfouse, Eric; Zhang, Peng; Feng, Dawei; Li, Fangbai
Source PublicationCHEMICAL ENGINEERING JOURNAL
2020-06-01
Volume389Pages:124469
KeywordINTERSPECIES ELECTRON-TRANSFER ANAEROBIC-DIGESTION ISOTOPE FRACTIONATION MICROBIAL COMMUNITY POWER-GENERATION WASTE-WATER METHANOGENESIS GEOBACTER QUANTIFICATION PARTICLES
MOST Discipline CatalogueEngineering, Environmental ; Engineering, Chemical
DOI10.1016/j.cej.2020.124469
Contribution Rank[Xiao, Leilei; Liu, Fanghua; Feng, Dawei] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Biol & Biol Resources Utilizat, Yantai 264003, Peoples R China; [Liu, Fanghua] Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao 266237, Peoples R China; [Xiao, Leilei; Liu, Fanghua; Feng, Dawei] Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China; [Lichtfouse, Eric] Aix Marseille Univ, Coll France, CEREGE, INRA,IRD,CNRS, Ave Louis Philibert, F-13100 Aix En Provence, France; [Zhang, Peng] Kunming Univ Sci & Technol, Fac Environm Sci & Engn, Kunming 650500, Yunnan, Peoples R China; [Li, Fangbai] Guangdong Inst Ecoenvironm Sci & Technol, Guangdong Key Lab Integrated Agroenvironm Pollut, Guangzhou 510650, Peoples R China
Department海岸带生物学与生物资源保护实验室
AbstractMethane is a major greenhouse gas responsible of global warming and renewable energy, but the precise contribution of biomethane from microbial decomposition is vague because microbial mechanisms are not fully understood. CO2 reduction and direct acetate dismutation are two main pathways for biomethane production, accounting for similar to 1/3 and 2/3 of produced methane in terrestrial ecosystems, respectively. A classical process explaining methane production involves CO2 reduction by direct interspecies electron transfer (DIET). Herein, we hypothesized that methane could also be produced by direct acetate dismutation by syntrophy between electron-donating Shewanella oneidensis MR-1 and electron-accepting methanogens. We tested the effect of two conducing carbon materials, granular activated carbon and carbon nanotubes, on methane production. The electrical activity was monitored with a microbial fuel cell. We used CH3F, C-13 labelling, thermodynamics, DNA analysis and modelling to elucidate the mechanism. Results show that the rate of methane production increased by 29.0% using S. oneidensis MR-1, and by 36.2-40.7% using S. oneidensis MR-1 and conducing materials. C-13 labelling shows that about 94% of methane is produced by acetate dismutation. Findings further show that acetate dismutation is enhanced by exoelectrogenic activity, thus suggesting that electrons from S. oneidensis MR-1 are used to convert methyl groups into methane. Overall our results disclose DIET-acetate dismutation as an alternative mechanism of biomethane production, which is highly stimulated by carbon-based conducive materials. These findings are of significance for further understanding methanogenic progresses with the involvement of electroactive microorganisms in natural environments and artificial anaerobic systems.
SubtypeArticle
Indexed BySCI
Language英语
WOS KeywordINTERSPECIES ELECTRON-TRANSFER ; ANAEROBIC-DIGESTION ; ISOTOPE FRACTIONATION ; MICROBIAL COMMUNITY ; POWER-GENERATION ; WASTE-WATER ; METHANOGENESIS ; GEOBACTER ; QUANTIFICATION ; PARTICLES
WOS IDWOS:000519528800093
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/25026
Collection海岸带生物学与生物资源利用重点实验室_海岸带生物学与生物资源保护实验室
Affiliation1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Biol & Biol Resources Utilizat, Yantai 264003, Peoples R China;
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao 266237, Peoples R China;
3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China;
4.Aix Marseille Univ, Coll France, CEREGE, INRA,IRD,CNRS, Ave Louis Philibert, F-13100 Aix En Provence, France;
5.Kunming Univ Sci & Technol, Fac Environm Sci & Engn, Kunming 650500, Yunnan, Peoples R China;
6.Guangdong Inst Ecoenvironm Sci & Technol, Guangdong Key Lab Integrated Agroenvironm Pollut, Guangzhou 510650, Peoples R China
Recommended Citation
GB/T 7714
Xiao, Leilei,Liu, Fanghua,Lichtfouse, Eric,et al. Methane production by acetate dismutation stimulated by Shewanella oneidensis and carbon materials: An alternative to classical CO2 reduction[J]. CHEMICAL ENGINEERING JOURNAL,2020,389:124469.
APA Xiao, Leilei,Liu, Fanghua,Lichtfouse, Eric,Zhang, Peng,Feng, Dawei,&Li, Fangbai.(2020).Methane production by acetate dismutation stimulated by Shewanella oneidensis and carbon materials: An alternative to classical CO2 reduction.CHEMICAL ENGINEERING JOURNAL,389,124469.
MLA Xiao, Leilei,et al."Methane production by acetate dismutation stimulated by Shewanella oneidensis and carbon materials: An alternative to classical CO2 reduction".CHEMICAL ENGINEERING JOURNAL 389(2020):124469.
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