Optimization of liquid hot water pretreatment on Hybrid Pennisetum anaerobic digestion and its effect on energy efficiency

doi:10.1016/j.enconman.2020.112718

	Optimization of liquid hot water pretreatment on Hybrid Pennisetum anaerobic digestion and its effect on energy efficiency
	Kang, Xihui 2,3,4,5; Zhang, Yi 2; Lin, Richen 1,6; Li, Lianhua 2,3; Zhen, Feng 2,3; Kong, Xiaoying 2,3,4; Sun, Yongming 2,3,4; Yuan, Zhenhong 2
刊名	ENERGY CONVERSION AND MANAGEMENT
	2020-04-15
卷号	210 页码:11
关键词	Energy crops Pretreatment Liquid hot water Anaerobic digestion Response surface methodology Energy efficiency
ISSN号	0196-8904
DOI	10.1016/j.enconman.2020.112718
通讯作者	Li, Lianhua(lilh@ms.giec.ac.cn) ; Sun, Yongming(sunym@ms.giec.ac.cn)
英文摘要	To overcome the inherent complexity of lignocellulosic biomass and improve its biological conversion efficiency, the central composite surface response methodology was used to optimize the process variables (temperature, reaction time and liquid-to-solid ratio) in liquid hot water pretreatment for biomethane production from the anaerobic digestion of Hybrid Pennisetum (a typical energy crop in southern China). Temperature, reaction time and water content were varied between 160-200 degrees C, 20-60 min and 60-90 mL respectively. The biomethane yields from pretreated material were considered as response variables to different processes conditions. Results showed untreated Hybrid Pennisetum had a biomethane potential of 218.6 L/kg volatile solid (VS) (corresponding to a biodegradability of 62.6%). The effect of liquid hot water pretreatment on the biomethane yield was distinct. Pretreatment severities less than 4.55 resulted in increased biomethane yields. However, further increasing the severity led to lower biomethane yields. The optimum biomethane yield (290.6 L/kg VS) was obtained from pretreated Hybrid Pennisetum at 175 degrees C for 35 min, with the highest biodegradability of 83.2%. Energy balance showed that, under the optimal pretreatment condition, the highest energy conversion efficiency of 76.1% was attained in theory. If the process energy inputs are included, a process energy efficiency of 51.7% could be realized with proper heat recovery.
资助项目	National Natural Science Foundation of China[51776208] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA21050400] ; Science and Technology Planning Project of Guangdong Province[2017B020238005] ; Science and Technology Program of Guangzhou[201803030007] ; Agricultural Technology Research and Development Project of Guangdong Province[2018LM2178] ; European Union's Horizon 2020 research and innovation programme under the Marie SklodowskaCurie grant[797259] ; Office of the China Postdoctoral Council[ZD2018025] ; Helmholtz Association[ZD2018025]
WOS关键词	IMPROVING METHANE PRODUCTION ; HYDROTHERMAL PRETREATMENT ; ENZYMATIC DIGESTIBILITY ; LIGNOCELLULOSIC BIOMASS ; BIOMETHANE PRODUCTION ; CO-DIGESTION ; RICE STRAW ; PROCESS PERFORMANCE ; ACID PRETREATMENT ; LIGNIN REMOVAL
WOS研究方向	Thermodynamics ; Energy & Fuels ; Mechanics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000524316000039
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Science and Technology Planning Project of Guangdong Province ; Science and Technology Program of Guangzhou ; Agricultural Technology Research and Development Project of Guangdong Province ; European Union's Horizon 2020 research and innovation programme under the Marie SklodowskaCurie grant ; Office of the China Postdoctoral Council ; Helmholtz Association
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/27037]
专题	中国科学院广州能源研究所
通讯作者	Li, Lianhua; Sun, Yongming
作者单位	1.Univ Coll Cork, Environm Res Inst, MaREI Ctr, Cork, Ireland 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 3.CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 4.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.Univ Coll Cork, Sch Engn, Cork, Ireland
推荐引用方式 GB/T 7714	Kang, Xihui,Zhang, Yi,Lin, Richen,et al. Optimization of liquid hot water pretreatment on Hybrid Pennisetum anaerobic digestion and its effect on energy efficiency[J]. ENERGY CONVERSION AND MANAGEMENT,2020,210:11.
APA	Kang, Xihui.,Zhang, Yi.,Lin, Richen.,Li, Lianhua.,Zhen, Feng.,...&Yuan, Zhenhong.(2020).Optimization of liquid hot water pretreatment on Hybrid Pennisetum anaerobic digestion and its effect on energy efficiency.ENERGY CONVERSION AND MANAGEMENT,210,11.
MLA	Kang, Xihui,et al."Optimization of liquid hot water pretreatment on Hybrid Pennisetum anaerobic digestion and its effect on energy efficiency".ENERGY CONVERSION AND MANAGEMENT 210(2020):11.