Xiao, LL1
; Sun, R5; Zhang, P4; Zheng, SL1; Tan, Y1; Li, JJ1; Zhang, YC1; Liu, FH1,2,3发表期刊CHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
2019-12-15
卷号378页码:UNSP 122229
关键词BioaugmentationDirect interspecies electron transferCoexistence of multiple methanogenic pathwaysCO2 reductionHydrogenetrophic methanogenesisAcetoclastic methanogenesis
研究领域Engineering, Environmental; Engineering, Chemical
DOI10.1016/j.cej.2019.122229
产权排序[Xiao, Leilei
; Zheng, Shiling; Tan, Yang; Li, Jiajia; Zhang, Yuechao; Liu, Fanghua] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China; [Liu, Fanghua] Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Biol & Biotechnol, Qingdao 266237, Shandong, Peoples R China; [Liu, Fanghua] Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Shandong, Peoples R China; [Zhang, Peng] Kunming Univ Sci & Technol, Fac Environm Sci & Engn, Kunming 650500, Yunnan, Peoples R China; [Sun, Ran] China Agr Univ, Yantai Res Inst, Yantai 264670, Peoples R China
通讯作者Liu, Fanghua(fhliu@yic.ac.cn)
作者部门海岸带生物学与生物资源保护实验室
英文摘要Direct interspecies electron transfer coupled to CO2 reduction, DIET-CO2 reduction, to generate methane is proposed and prosperous in 2010s. It is well known that bioaugmentation and increased electron transfer benefit DIET-CO2 reduction. Herein, we studied whether other methanogenic pathways, such as H-2-mediated methanogenic progress and direct acetate cleavage (acetoclastic methanogenesis), are simultaneously favorable in the presence of conductive materials (CMs). If so, contribution of DIET-CO2 reduction may be overestimated because overwhelming studies just considered this pathway. Detailed researches on whether and how Clostridium pasteurianum coupled with CMs, granular activated carbon, biochar, nano-magnetite and grapheme, influenced methanogenic progresses were conducted. Overall, C. pasteurianum enhanced methane production rate, which was further improved by some CMs. Combined with metabolism, kinetic and electrochemical analysis, experimental results showed that hydrogenotrophic methanogenesis occurred and bioaugmentation strengthened this progress, which was further motivated by CMs, such as biochar and magnetite. 16S rRNA gene analysis suggested that Methanobacteriaceae was potentially responsible for methane production. Whereafter, DIET-CO2 reduction may become prosperous according to electrochemical and thermomechanical analysis. Acetoclastic methanogenesis was also triggered by bioaugmentation based on experiments by using inhibitor, CH3F, for acetoclastic methanogenesis and carbon isotope fractionation. More importantly, magnetite and graphene, which significantly accelerated electron transfer based on electrochemical analysis, further stimulated acetoclastic methanogenesis. Methanothrix dominated and may play an important role in this stage. This work suggests that diverse methanogenic pathways may be benefited from an increase of electron transfer other than DIET-CO2 reduction. Consequently, the long-standing view that only DIET-CO2 reduction was stimulated by conductive materials may need to be reevaluated. Our research provides potential guides to increase methane production during anaerobic digestion by the enhancement of acetoclastic methanogenesis.
文章类型Article
资助机构National Natural Science Foundation of ChinaNational Natural Science Foundation of China [91751112, 41703075, 41573071]; Natural Science Foundation of Shandong ProvinceNatural Science Foundation of Shandong Province [JQ201608, ZR2016DQ12, ZR2018MD011]; Young Taishan Scholars Program [tsqn20161054]
收录类别SCI
语种英语
关键词[WOS]ANAEROBIC-DIGESTION; HYDROGEN-PRODUCTION; ACETOCLASTIC METHANOGENESIS; CARBON; ENHANCEMENT; WASTE; FERMENTATION; METHANOSAETA; STIMULATION; COMMUNITY
研究领域[WOS]Engineering, Environmental; Engineering, Chemical
WOS记录号WOS:000487764800149
引用统计被引频次：36[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/133337/24788
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
通讯作者Liu, FH作者单位1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China;
2.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Biol & Biotechnol, Qingdao 266237, Shandong, Peoples R China;
3.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Shandong, Peoples R China;
4.Kunming Univ Sci & Technol, Fac Environm Sci & Engn, Kunming 650500, Yunnan, Peoples R China;
5.China Agr Univ, Yantai Res Inst, Yantai 264670, Peoples R China
推荐引用方式
GB/T 7714Xiao, LL,Sun, R,Zhang, P,et al. Simultaneous intensification of direct acetate cleavage and CO2 reduction to generate methane by bioaugmentation and increased electron transfer[J]. CHEMICAL ENGINEERING JOURNAL,2019,378:UNSP 122229.
APAXiao, LL.,Sun, R.,Zhang, P.,Zheng, SL.,Tan, Y.,...&Liu, FH.(2019).Simultaneous intensification of direct acetate cleavage and CO2 reduction to generate methane by bioaugmentation and increased electron transfer.CHEMICAL ENGINEERING JOURNAL,378,UNSP 122229.
MLAXiao, LL,et al."Simultaneous intensification of direct acetate cleavage and CO2 reduction to generate methane by bioaugmentation and increased electron transfer".CHEMICAL ENGINEERING JOURNAL 378(2019):UNSP 122229.
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