Xiao, Leilei
; Liu, Fanghua; Liu, Jinchao; Li, Jiajia; Zhang, Yuechao; Yu, Jiafeng; Wang, Oumei发表期刊ENVIRONMENTAL SCIENCE-NANO
ISSN2051-8153
2018-02
卷号5期号:2页码:436-445
关键词INTERSPECIES ELECTRON-TRANSFERANOXIC PADDY SOILGEOBACTER-SULFURREDUCENSANAEROBIC-BACTERIAFERRIC IRONSYNTROPHIC COOPERATIONMAGNETITEACETATECARBONMETHANOGENESIS
研究领域Chemistry, Multidisciplinary; Environmental Sciences; Nanoscience & Nanotechnology
DOI10.1039/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
引用统计被引频次：45[WOS][WOS记录][WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://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 7714Xiao, 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.
APAXiao, 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.
MLAXiao, 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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