Influence of temperature fluctuation on thermophilic anaerobic digestion of municipal organic solid waste.

Content Provider	Europe PMC
Author	Wu, Man-Chang Sun, Ke-Wei Zhang, Yong
Abstract	A laboratory-scale experiment was carried out to assess the influence of temperature fluctuation on thermophilic anaerobic digestion of municipal organic solid waste (MOSW). Heating failure was simulated by decreasing temperature suddenly from 55 °C to 20 °C suddenly; 2 h time is needed for temperature decrease and recovery. Under the conditions of 8.0 g/(L·d) and 15 d respectively for MOSW load and retention time, following results were noted: (1) biogas production almost stopped and VFA (volatile fatty acid) accumulated rapidly, accompanied by pH decrease; (2) with low temperature (20 °C) duration of 1, 5, 12 and 24 h, it took 3, 11, 56 and 72 h for the thermophilic anaerobic digestion system to reproduce methane after temperature fluctuation; (3) the longer the low temperature interval lasted, the more the methanogenic bacteria would decay; hydrolysis, acidification and methanogenesis were all influenced by temperature fluctuation; (4) the thermophilic microorganisms were highly resilient to temperature fluctuation.
Related Links	https://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC1419061&blobtype=pdf
ISSN	16731581
Volume Number	7
PubMed Central reference number	PMC1419061
Issue Number	3
PubMed reference number	16502503
Journal	J Zhejiang Univ Sci B
DOI	10.1631/jzus.2006.b0180
Language	English
Publisher	Zhejiang University Press
Publisher Date	2006-03-01
Publisher Place	Hangzhou
Access Restriction	Open
Subject Keyword	Temperature fluctuation Low temperature duration Thermophilic anaerobic digestion Municipal organic solid waste
Content Type	Text
Resource Type	Article
Subject	Veterinary Medicine Biochemistry, Genetics and Molecular Biology Pharmacology, Toxicology and Pharmaceutics