Graphene Addition to Digestion of Thin Stillage Can Alleviate Acidic Shock and Improve Biomethane Production

doi:10.1021/acssuschemeng.0c03484

GIEC OpenIR

	Graphene Addition to Digestion of Thin Stillage Can Alleviate Acidic Shock and Improve Biomethane Production
	Wu, Benteng 1,2; Lin, Richen 1,2; Kang, Xihui 1,2,3; Deng, Chen 1,2; Xia, Ao 4; Dobson, Alan D. W.5; Murphy, Jerry D.1,2
	2020-09-08
发表期刊	ACS SUSTAINABLE CHEMISTRY & ENGINEERING
ISSN	2168-0485
卷号	8 期号:35 页码:13248-13260
通讯作者	Lin, Richen(richen.lin@ucc.ie)
摘要	Production of biomethane from distillery byproducts (such as stillage) in a circular economy system may facilitate a climate neutral alcohol industry. Anaerobic digestion (AD) of easily degradable substrates can lead to rapid acidification and accumulation of intermediate volatile fatty acids, reducing microbial activity and biomethane production. Carbonaceous materials may function as an abiotic conductive conduit to stimulate microbial electron transfer and resist adverse impacts on AD. Herein, nanomaterial graphene and more cost-effective pyrochar were comparatively assessed in their ability to recover AD performance after acidic shock (pH 5.5). Results showed that graphene addition (1.0 g/L) could lead to a biomethane yield of 250 mL/g chemical oxygen demand; this is an 11.0% increase compared to that of the control. The recovered process was accompanied by faster propionate degradation (CH3CH2COO- + 2H(2)O -> CH3COO- + CO2 + 6H(+) + 6e(-)). The enhanced performance was possibly ascribed to the high electrical conductivity of graphene. In comparison, pyrochar addition (1.0 and 10.0 g/L) did not enhance the biomethane yield, though it reduced the digestion lag-phase time by 18.1% and 12.2% compared to the control, respectively. Microbial taxonomy analysis suggested that Methanosarcina (81.5% in abundance) with diverse metabolic pathways and OTU in the order DTU014 (6.4% in abundance) might participate in direct interspecies electron transfer contributing to an effective recovery from acidic shock.
关键词	Anaerobic digestion Biomethane Conductive materials Acidic shock Thin stillage
DOI	10.1021/acssuschemeng.0c03484
关键词[WOS]	INTERSPECIES ELECTRON-TRANSFER ; ANAEROBIC-DIGESTION ; METHANE PRODUCTION ; SYNTROPHIC METABOLISM ; BIOCHAR PROPERTIES ; CO-DIGESTION ; SLUDGE ; COMMUNITIES ; PERFORMANCE ; PROPIONATE
收录类别	SCI
语种	英语
资助项目	Ireland Environmental Protection Agency (EPA) Research Programme 2014-2020[2018-RE-MS-13] ; European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant[797259] ; Science Foundation Ireland (SFI) through the MaREI Centre for Energy, Climate and Marine[12/RC/2302_P2] ; Science Foundation Ireland (SFI) through the MaREI Centre for Energy, Climate and Marine[16/SP/3829] ; Department of Communications, Climate Action and Environment ; National Natural Science Foundation of China[51876016] ; Sustainable Energy Authority Ireland[RDD/00454]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Engineering
项目资助者	Ireland Environmental Protection Agency (EPA) Research Programme 2014-2020 ; European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant ; Science Foundation Ireland (SFI) through the MaREI Centre for Energy, Climate and Marine ; Department of Communications, Climate Action and Environment ; National Natural Science Foundation of China ; Sustainable Energy Authority Ireland
WOS类目	Chemistry, Multidisciplinary ; Green & Sustainable Science & Technology ; Engineering, Chemical
WOS记录号	WOS:000571390000015
出版者	AMER CHEMICAL SOC
引用统计	被引频次：39[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/32081
专题	中国科学院广州能源研究所
通讯作者	Lin, Richen
作者单位	1.Univ Coll Cork, MaREI Ctr, Environm Res Inst, Cork T23 XE10, Ireland 2.Univ Coll Cork, Sch Engn, Cork T23 XE10, Ireland 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 4.Chongqing Univ, Key Lab Low Grade Energy Utilizat Technol & Syst, Minist Educ, Chongqing 400044, Peoples R China 5.Univ Coll Cork, Sch Microbiol, Cork T12 K8AF, Ireland
推荐引用方式 GB/T 7714	Wu, Benteng,Lin, Richen,Kang, Xihui,et al. Graphene Addition to Digestion of Thin Stillage Can Alleviate Acidic Shock and Improve Biomethane Production[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2020,8(35):13248-13260.
APA	Wu, Benteng.,Lin, Richen.,Kang, Xihui.,Deng, Chen.,Xia, Ao.,...&Murphy, Jerry D..(2020).Graphene Addition to Digestion of Thin Stillage Can Alleviate Acidic Shock and Improve Biomethane Production.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,8(35),13248-13260.
MLA	Wu, Benteng,et al."Graphene Addition to Digestion of Thin Stillage Can Alleviate Acidic Shock and Improve Biomethane Production".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 8.35(2020):13248-13260.