Impact of undissociated volatile fatty acids on acidogenesis in a two-phase anaerobic system
This study investigated the degradation and production of volatile fatty acids（VFAs）in the acidogenic phase reactor of a two-phase anaerobic system.20 mmol/L bromoethanesulfonic acid（BESA）was used to inhibit acidogenic methanogens（which were present in the acidogenic phase reactor）from degrading VFA...
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| Published in | Journal of environmental sciences (China) Vol. 42; no. 4; pp. 196 - 201 |
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| Main Authors | , , , , |
| Format | Journal Article |
| Language | English |
| Published |
Netherlands
Elsevier B.V
01.04.2016
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-0742 1878-7320 |
| DOI | 10.1016/j.jes.2015.06.015 |
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| Abstract | This study investigated the degradation and production of volatile fatty acids（VFAs）in the acidogenic phase reactor of a two-phase anaerobic system.20 mmol/L bromoethanesulfonic acid（BESA）was used to inhibit acidogenic methanogens（which were present in the acidogenic phase reactor）from degrading VFAs.The impact of undissociated volatile fatty acids（un VFAs）on＂net＂VFAs production in the acidogenic phase reactor was then evaluated,with the exclusion of concurrent VFAs degradation.＂Net＂VFAs production from glucose degradation was partially inhibited at high un VFAs concentrations,with 59%,37% and 60% reduction in production rates at 2190 mg chemical oxygen demand（COD）/L undissociated acetic acid（un HAc）,2130 mg COD/L undissociated propionic acid（un HPr）and 2280 mg COD/L undissociated n-butyric acid（un HBu）,respectively.The profile of VFAs produced further indicated that while an un VFA can primarily affect its own formation,there were also un VFAs that affected the formation of other VFAs. |
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| AbstractList | This study investigated the degradation and production of volatile fatty acids（VFAs）in the acidogenic phase reactor of a two-phase anaerobic system.20 mmol/L bromoethanesulfonic acid（BESA）was used to inhibit acidogenic methanogens（which were present in the acidogenic phase reactor）from degrading VFAs.The impact of undissociated volatile fatty acids（un VFAs）on＂net＂VFAs production in the acidogenic phase reactor was then evaluated,with the exclusion of concurrent VFAs degradation.＂Net＂VFAs production from glucose degradation was partially inhibited at high un VFAs concentrations,with 59%,37% and 60% reduction in production rates at 2190 mg chemical oxygen demand（COD）/L undissociated acetic acid（un HAc）,2130 mg COD/L undissociated propionic acid（un HPr）and 2280 mg COD/L undissociated n-butyric acid（un HBu）,respectively.The profile of VFAs produced further indicated that while an un VFA can primarily affect its own formation,there were also un VFAs that affected the formation of other VFAs. This study investigated the degradation and production of volatile fatty acids (VFAs) in the acidogenic phase reactor of a two-phase anaerobic system. 20 mmol/L bromoethanesulfonic acid (BESA) was used to inhibit acidogenic methanogens (which were present in the acidogenic phase reactor) from degrading VFAs. The impact of undissociated volatile fatty acids (unVFAs) on "net" VFAs production in the acidogenic phase reactor was then evaluated, with the exclusion of concurrent VFAs degradation. "Net" VFAs production from glucose degradation was partially inhibited at high unVFAs concentrations, with 59%, 37% and 60% reduction in production rates at 2190 mg chemical oxygen demand (COD)/L undissociated acetic acid (unHAc), 2130 mg COD/L undissociated propionic acid (unHPr) and 2280 mg COD/L undissociated n-butyric acid (unHBu), respectively. The profile of VFAs produced further indicated that while an unVFA can primarily affect its own formation, there were also unVFAs that affected the formation of other VFAs. This study investigated the degradation and production of volatile fatty acids (VFAs) in the acidogenic phase reactor of a two-phase anaerobic system. 20mmol/L bromoethanesulfonic acid (BESA) was used to inhibit acidogenic methanogens (which were present in the acidogenic phase reactor) from degrading VFAs. The impact of undissociated volatile fatty acids (unVFAs) on “net” VFAs production in the acidogenic phase reactor was then evaluated, with the exclusion of concurrent VFAs degradation. “Net” VFAs production from glucose degradation was partially inhibited at high unVFAs concentrations, with 59%, 37% and 60% reduction in production rates at 2190mg chemical oxygen demand (COD)/L undissociated acetic acid (unHAc), 2130mg COD/L undissociated propionic acid (unHPr) and 2280mg COD/L undissociated n-butyric acid (unHBu), respectively. The profile of VFAs produced further indicated that while an unVFA can primarily affect its own formation, there were also unVFAs that affected the formation of other VFAs. This study investigated the degradation and production of volatile fatty acids (VFAs) in the acidogenic phase reactor of a two-phase anaerobic system. 20mmol/L bromoethanesulfonic acid (BESA) was used to inhibit acidogenic methanogens (which were present in the acidogenic phase reactor) from degrading VFAs. The impact of undissociated volatile fatty acids (unVFAs) on “net” VFAs production in the acidogenic phase reactor was then evaluated, with the exclusion of concurrent VFAs degradation. “Net” VFAs production from glucose degradation was partially inhibited at high unVFAs concentrations, with 59%, 37% and 60% reduction in production rates at 2190mg chemical oxygen demand (COD)/L undissociated acetic acid (unHAc), 2130mg COD/L undissociated propionic acid (unHPr) and 2280mg COD/L undissociated n-butyric acid (unHBu), respectively. The profile of VFAs produced further indicated that while an unVFA can primarily affect its own formation, there were also unVFAs that affected the formation of other VFAs. [Display omitted] |
| Author | Keke Xiao Yan Zhou Chenghong Guo Yogananda Maspolim Wun Jern Ng |
| AuthorAffiliation | Advanced Enuironmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore. School of Ciuil and F.nuironmental Engineering, Nanyang Technological Uniuersity, Singapore 639798, Singapore |
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| Cites_doi | 10.1016/0300-9084(87)90242-2 10.1128/AEM.56.3.719-723.1990 10.1016/j.chemosphere.2014.07.028 10.1016/j.ijhydene.2010.09.092 10.1021/es00026a019 10.1016/j.watres.2008.06.010 10.1016/S0032-9592(98)00027-2 10.1016/j.ijhydene.2009.11.114 10.1007/BF03326198 10.1016/S0043-1354(02)00256-7 10.1128/AEM.64.2.530-534.1998 10.1016/j.biortech.2011.03.079 10.2166/wst.1991.0567 10.2166/wst.1998.0580 10.1016/j.bej.2013.03.011 10.1007/BF02931947 10.1080/00139307109434990 10.1016/j.procbio.2005.01.025 10.1016/j.chemosphere.2014.09.004 10.1007/BF00252157 10.1002/jctb.1012 10.1021/es8037142 10.1021/es0510515 |
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| DocumentTitleAlternate | Impact of undissociated volatile fatty acids on acidogenesis in a two-phase anaerobic system |
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| Keywords | Substrate inhibition Anaerobic process Undissociated volatile fatty acids Acidogenesis Waste treatment |
| Language | English |
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| Notes | Anaerobic process Waste treatment Substrate inhibition Undissociated volatile fatty acids Acidogenesis This study investigated the degradation and production of volatile fatty acids（VFAs）in the acidogenic phase reactor of a two-phase anaerobic system.20 mmol/L bromoethanesulfonic acid（BESA）was used to inhibit acidogenic methanogens（which were present in the acidogenic phase reactor）from degrading VFAs.The impact of undissociated volatile fatty acids（un VFAs）on＂net＂VFAs production in the acidogenic phase reactor was then evaluated,with the exclusion of concurrent VFAs degradation.＂Net＂VFAs production from glucose degradation was partially inhibited at high un VFAs concentrations,with 59%,37% and 60% reduction in production rates at 2190 mg chemical oxygen demand（COD）/L undissociated acetic acid（un HAc）,2130 mg COD/L undissociated propionic acid（un HPr）and 2280 mg COD/L undissociated n-butyric acid（un HBu）,respectively.The profile of VFAs produced further indicated that while an un VFA can primarily affect its own formation,there were also un VFAs that affected the formation of other VFAs. 11-2629/X ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
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| Snippet | This study investigated the degradation and production of volatile fatty acids（VFAs）in the acidogenic phase reactor of a two-phase anaerobic system.20 mmol/L... This study investigated the degradation and production of volatile fatty acids (VFAs) in the acidogenic phase reactor of a two-phase anaerobic system. 20mmol/L... This study investigated the degradation and production of volatile fatty acids (VFAs) in the acidogenic phase reactor of a two-phase anaerobic system. 20... |
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| SubjectTerms | acetic acid Acidogenesis Anaerobic process Anaerobiosis Biodegradation, Environmental Bioreactors chemical oxygen demand COD Fatty Acids, Volatile glucose methanogens propionic acid Substrate inhibition Undissociated volatile fatty acids volatile fatty acids Waste treatment 两相厌氧系统 产甲烷菌 产酸相反应器 化学需氧量 挥发性脂肪酸 糖降解 解离 |
| Title | Impact of undissociated volatile fatty acids on acidogenesis in a two-phase anaerobic system |
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