| Nano-Fe3O4 particles accelerating electromethanogenesis on an hour-long timescale in wetland soil | |
Xiao, Leilei ; Liu, Fanghua; Liu, Jinchao; Li, Jiajia; Zhang, Yuechao; Yu, Jiafeng; Wang, Oumei
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| 发表期刊 | ENVIRONMENTAL SCIENCE-NANO
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| ISSN | 2051-8153 |
| 2018-02 | |
| 卷号 | 5期号:2页码:436-445 |
| 关键词 | INTERSPECIES ELECTRON-TRANSFER ANOXIC PADDY SOIL GEOBACTER-SULFURREDUCENS ANAEROBIC-BACTERIA FERRIC IRON SYNTROPHIC COOPERATION MAGNETITE ACETATE CARBON METHANOGENESIS |
| 研究领域 | Chemistry, Multidisciplinary ; Environmental Sciences ; Nanoscience & Nanotechnology |
| DOI | 10.1039/c7en00577f |
| 产权排序 | [Xiao, Leilei; Liu, Fanghua; Liu, Jinchao; Li, Jiajia; Zhang, Yuechao] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Biol & Biol Resources Utilizat, 17 Chunhui Rd, Yantai 264003, Shandong, Peoples R China; [Liu, Jinchao; Li, Jiajia; Zhang, Yuechao] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Yu, Jiafeng] Dezhou Univ, Shandong Prov Key Lab Biophys, Inst Biophys, Dezhou 253023, Peoples R China; [Wang, Oumei] Binzhou Med Univ, 346 Guanhai Rd, Yantai 264003, Shandong, Peoples R China |
| 作者部门 | 海岸带生物学与生物资源保护实验室 |
| 英文摘要 | Electromethanogenesis, which is different from traditional hydrogenotrophic and acetoclastic methanogenesis, is a novel means of methane production involving the direct transfer of electrons to methanogens. Nano-Fe3O4 (nano-magnetite) has been found to strengthen the link between electricity-producing bacteria and methanogens; however, whether nano-Fe3O4 changes the carbon- and/or electron-flow pathways involved in the methanogenic processes in natural soil remains unknown. Experiments on wetland soil were reported in this work. Experimental results showed that nano-Fe3O4 particles significantly stimulated methane production. Combining the application of a stable isotope tracer ((CH3COOH)-C-13) and an acetoclastic methanogenesis inhibitor (CH3F) and thermodynamic calculations, the results indicated that nano-Fe3O4 accelerated the CO2 reduction process rather than acetoclastic methanogenesis. Comprehensive utilization of a variety of methods (thermodynamic calculations, current density measurements, and model analysis) suggested that electrons, which came from syntrophic acetate oxidation (SAO), were the reducing agents for methane production. Nano-Fe3O4 did not appear to change the carbon flow but did promote electron transfer, and the whole process can be finished within an hour-long timescale. Furthermore, a dramatic increase in acetoclastic methanogenesis was observed within only 9 h incubation. This suggests that the methanogenic pathways are flexible and transitory in natural soil. Coupled with cDNA sequencing results for the active bacteria and archaea, it is suggested that SAO and electromethanogenesis were preferred when Geobacter and Methanosarcina were involved. These findings add to the knowledge of the role of nano-Fe3O4 in methanogenic processes in natural and artificial environments. |
| 文章类型 | Article |
| 资助机构 | National Natural Science Foundation of China [41371257, 41573071, 41703075, 91751112] ; Natural Science Foundation of Shandong Province [ZR2016DQ12] ; Young Taishan Scholars Programme of Shandong Province [tsqn20161054] ; Shandong Provincial Key Laboratory of Biophysics |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | INTERSPECIES ELECTRON-TRANSFER ; ANOXIC PADDY SOIL ; GEOBACTER-SULFURREDUCENS ; ANAEROBIC-BACTERIA ; FERRIC IRON ; SYNTROPHIC COOPERATION ; MAGNETITE ; ACETATE ; CARBON ; METHANOGENESIS |
| 研究领域[WOS] | Chemistry ; Environmental Sciences & Ecology ; Science & Technology - Other Topics |
| WOS记录号 | WOS:000425492800017 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/24398 |
| 专题 | 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 |
| 作者单位 | 1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Biol & Biol Resources Utilizat, 17 Chunhui Rd, Yantai 264003, Shandong, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Dezhou Univ, Shandong Prov Key Lab Biophys, Inst Biophys, Dezhou 253023, Peoples R China; 4.Binzhou Med Univ, 346 Guanhai Rd, Yantai 264003, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiao, Leilei,Liu, Fanghua,Liu, Jinchao,et al. Nano-Fe3O4 particles accelerating electromethanogenesis on an hour-long timescale in wetland soil[J]. ENVIRONMENTAL SCIENCE-NANO,2018,5(2):436-445. |
| APA | Xiao, Leilei.,Liu, Fanghua.,Liu, Jinchao.,Li, Jiajia.,Zhang, Yuechao.,...&Wang, Oumei.(2018).Nano-Fe3O4 particles accelerating electromethanogenesis on an hour-long timescale in wetland soil.ENVIRONMENTAL SCIENCE-NANO,5(2),436-445. |
| MLA | Xiao, Leilei,et al."Nano-Fe3O4 particles accelerating electromethanogenesis on an hour-long timescale in wetland soil".ENVIRONMENTAL SCIENCE-NANO 5.2(2018):436-445. |
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