A syntrophic propionate-oxidizing microflora and its bioaugmentation on anaerobic wastewater treatment for enhancing methane production and COD removal

被引：0
作者：
Chong Liu
Jianzheng Li
Shuo Wang
Loring Nies
机构：
[1] Harbin Institute of Technology,State Key Laboratory of Urban Water Resource and Environment
[2] Jiangnan University,School of Environment and Civil Engineering
[3] Purdue University,School of Civil Engineering
来源：
Frontiers of Environmental Science & Engineering | 2016年 / 10卷
关键词：
Anaerobic wastewater treatment; Methane production; Hydrogen-producing acetogenesis; Methanogenesis; Rate-limiting step; Bioaugmentation;
D O I：
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学科分类号：
摘要：
Methane fermentation process can be restricted and even destroyed by the accumulation of propionate because it is the most difficult to be anaerobically oxidized among the volatile fatty acids produced by acetogenesis. To enhance anaerobic wastewater treatment process for methane production and COD removal, a syntrophic propionate-oxidizing microflora B83 was obtained from an anaerobic activated sludge by enrichment with propionate. The inoculation of microflora B83, with a 1:9 ratio of bacteria number to that of the activated sludge, could enhance the methane production from glucose by 2.5 times. With the same inoculation dosage of the microflora B83, COD removal in organic wastewater treatment process was improved from 75.6% to 86.6%, while the specific methane production by COD removal was increased by 2.7 times. Hydrogen-producing acetogenesis appeared to be a rate-limiting step in methane fermentation, and the enhancement of hydrogen-producing acetogens in the anaerobic wastewater treatment process had improved not only the hydrogen-producing acetogenesis but also the acidogenesis and methanogenesis. [graphic not available: see fulltext]
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[1]  
Gunaseelan V N(1997)Anaerobic digestion of biomass for methane production: a review Biomass and Bioenergy 13 83-114
[2]  
Gou M(2016)Microbial community structure and dynamics of starch-fed and glucose-fed chemostats during two years of continuous operation Frontiers of Environmental Science & Engineering 10 368-380
[3]  
Zeng J(2007)Regulation and optimization of the biogas process: propionate as a key parameter Biomass and Bioenergy 31 820-830
[4]  
Wang H Z(2008)Statistical modeling and optimization of biomass granulation and COD removal in UASB reactors treating low strength wastewaters Bioresource Technology 99 4229-4238
[5]  
Tang Y Q(2015)Performance and bioparticle growth of anaerobic baffled reactor (ABR) fed with lowstrength domestic sewage Frontiers of Environmental Science & Engineering 9 352-364
[6]  
Shigematsu T(1991)Conversion of acetate, propionate and butyrate to methane under thermophilic conditions in batch reactors Water Research 25 1509-1513
[7]  
Morimura S(2001)A comprehensive study into the molecular methodology and molecular biology of methanogenic Archaea FEMS Microbiology Reviews 25 553-571
[8]  
Kida K(2016)Vacuum promotes metabolic shifts and increases biogenic hydrogen production in dark fermentation systems Frontiers of Environmental Science & Engineering 10 513-521
[9]  
Nielsen H B(2009)Electron transfer in syntrophic communities of anaerobic bacteria and archaea Nature Reviews. Microbiology 7 568-577
[10]  
Uellendahl H(2011)Growth- and substrate-dependent transcription of formate dehydrogenase and hydrogenase coding genes in Microbiology 157 280-289
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