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Anaerobic acidification of a synthetic wastewater in batch reactors at 55°C

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Titel: Anaerobic acidification of a synthetic wastewater in batch reactors at 55°C
Autoren: Fang, HHP, Yu, HQ
Quelle: Water Science and Technology. 46:153-157
Verlagsinformationen: IWA Publishing, 2002.
Publikationsjahr: 2002
Schlagwörter: Waste Disposal, Fluid - Methods, Temperature, 0211 other engineering and technologies, Bacteria, Anaerobic - Physiology, Agriculture, Fatty Acids, Volatile - Analysis - Metabolism, 02 engineering and technology, Hydrogen-Ion Concentration, Oxygen - Analysis, 7. Clean energy, 6. Clean water, Bioreactors, Proteins - Metabolism, Fermentation, Alcohols - Analysis, Carbohydrate Metabolism, Animals, Cattle
Beschreibung: Experiments were conducted to study the acidogenesis of a dairy wastewater in batch reactors at pH 5.5 and 55°C. There was a biased fermentation sequence for carbohydrate and protein, and the protein fermentation was delayed by carbohydrate. The production of hydrogen was exclusively from the fermentation of carbohydrate. Acetate and butyrate concentrations both increased rapidly at the beginning and peaked at some points, then declined in the reactors fed with 8 g-COD (chemical oxygen demand)/l, or higher concentrations. Butanol and propanol fractions increased with the substrate concentration. The metabolism shifted from the volatile fatty acid-producing pathways to the alcohol-producing pathways when the substrate concentration increased beyond 8 g-COD/l. The acidogenic biomass yield was in the range 0.19-0.25 mg-VSS/mg-COD.
Publikationsart: Article
Conference object
Sprache: English
ISSN: 1996-9732
0273-1223
DOI: 10.2166/wst.2002.0731
Zugangs-URL: https://www.ncbi.nlm.nih.gov/pubmed/12523747
https://iwaponline.com/wst/article/46/11-12/153/11102/Anaerobic-acidification-of-a-synthetic-wastewater
http://hub.hku.hk/handle/10722/152121
http://hdl.handle.net/10722/152121
http://hdl.handle.net/10722/110879
Dokumentencode: edsair.doi.dedup.....d5cd1c15e4c32aa74d153f11f3708c3b
Datenbank: OpenAIRE
Beschreibung
Abstract:Experiments were conducted to study the acidogenesis of a dairy wastewater in batch reactors at pH 5.5 and 55°C. There was a biased fermentation sequence for carbohydrate and protein, and the protein fermentation was delayed by carbohydrate. The production of hydrogen was exclusively from the fermentation of carbohydrate. Acetate and butyrate concentrations both increased rapidly at the beginning and peaked at some points, then declined in the reactors fed with 8 g-COD (chemical oxygen demand)/l, or higher concentrations. Butanol and propanol fractions increased with the substrate concentration. The metabolism shifted from the volatile fatty acid-producing pathways to the alcohol-producing pathways when the substrate concentration increased beyond 8 g-COD/l. The acidogenic biomass yield was in the range 0.19-0.25 mg-VSS/mg-COD.
ISSN:19969732
02731223
DOI:10.2166/wst.2002.0731