Simultaneous intensification of direct acetate cleavage and CO2 reduction to generate methane by bioaugmentation and increased electron transfer
Xiao, LL; Sun, R; Zhang, P; Zheng, SL; Tan, Y; Li, JJ; Zhang, YC; Liu, FH
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
2019-12-15
Volume378Pages:UNSP 122229
KeywordBioaugmentation Direct interspecies electron transfer Coexistence of multiple methanogenic pathways CO2 reduction Hydrogenetrophic methanogenesis Acetoclastic methanogenesis
MOST Discipline CatalogueEngineering, Environmental ; Engineering, Chemical
DOI10.1016/j.cej.2019.122229
Contribution Rank[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
Department海岸带生物学与生物资源保护实验室
AbstractDirect 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.
SubtypeArticle
Indexed BySCI
Language英语
WOS KeywordANAEROBIC-DIGESTION ; HYDROGEN-PRODUCTION ; ACETOCLASTIC METHANOGENESIS ; CARBON ; ENHANCEMENT ; WASTE ; FERMENTATION ; METHANOSAETA ; STIMULATION ; COMMUNITY
WOS Research AreaEngineering, Environmental ; Engineering, Chemical
WOS IDWOS:000487764800149
Funding OrganizationNational 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]
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/24788
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, 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
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GB/T 7714
Xiao, 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.
APA Xiao, 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.
MLA Xiao, 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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