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Title:
Influence of acidogenic headspace pressure on methane production under schematic of diversion of acidogenic off-gas to methanogenic reactor
Author: Yan, Bing Hua1,2,3; Selvam, Ammaiyappan2,3,4; Wong, Jonathan W. C.2,3
Source: BIORESOURCE TECHNOLOGY
Issued Date: 2017-12-01
Volume: 245, Pages:1000-1007
Keyword: Anaerobic digestion ; Headspace pressure ; Acidogenic off-gas ; Metabolic pathway
DOI: 10.1016/j.biortech.2017.08.173
DOC Type: Article
English Abstract: This study investigated the effects of 12.6 psi (T1), 6.3 psi (T2), 3.3 psi (T3) and ambient (T4) headspace pressure on the metabolic pathways in the acidogenic leach bed reactor (LBR) and overall methane recovery during two-phase anaerobic digestion of food waste. Diversion of biogas from LBR enhanced COD and soluble product generation in T2, T3 and T4 whereas, high pressure (T1) resulted in comparatively higher lactate production and low protein degradation. A pressure of 3-6 psi (T2 and T3) improved the production of COD by similar to 22-36%, soluble products by similar to 9-43%, volatile solid reduction by similar to 14-19%, and CH4 production by similar to 10-31% compared with control. Besides, similar to 3-6 psi headspace pressure positively influenced the composition of soluble products resulting in enhanced methane recovery adding advantage to the two-phase system. A headspace pressure of similar to 3-6 psi is recommended to enhance the hydrolysis-acidogenesis; however, the actual hydrogen concentration should be considered.
WOS Headings: Science & Technology ; Life Sciences & Biomedicine ; Technology
WOS Subject: Agricultural Engineering ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS Subject Extended: Agriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS Keyword Plus: FERMENTATIVE HYDROGEN-PRODUCTION ; THERMOPHILIC ANAEROBIC-DIGESTION ; POTENTIAL BMP TESTS ; LEACH BED REACTOR ; FOOD WASTE ; CLOSTRIDIUM-BUTYRICUM ; SELECTIVE PRODUCTION ; LACTIC-ACID ; PH CONTROL ; OPTIMIZATION
Indexed Type: SCI
Funder: Shandong Provincial Natural Science Foundation(ZR2016bb06) ; Research Grant Council of Hong Kong Special Administrative Region(HKBU262013)
Language: 英语
WOS ID: WOS:000412443500123
Citation statistics:
Content Type: 期刊论文
URI: http://ir.qibebt.ac.cn/handle/337004/9732
Appears in Collections:环境资源化与水回用团队_期刊论文

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description.institution: 1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Lab Waste Valorisat & Water Reuse, Qingdao, Peoples R China
2.Hong Kong Baptist Univ, Inst Bioresource & Agr, Sinoforest Appl Res Ctr Pearl River Delta Environ, Hong Kong, Hong Kong, Peoples R China
3.Hong Kong Baptist Univ, Dept Biol, Hong Kong, Hong Kong, Peoples R China
4.Manonmaniam Sundaranar Univ, Dept Plant Sci, Tirunelveli 627012, Tamil Nadu, India

Recommended Citation:
Yan, Bing Hua,Selvam, Ammaiyappan,Wong, Jonathan W. C.. Influence of acidogenic headspace pressure on methane production under schematic of diversion of acidogenic off-gas to methanogenic reactor[J]. BIORESOURCE TECHNOLOGY,2017,245:1000-1007.
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