title: Effect of temperature on survival of pathogenic bacteria in biogas plants.
abstract: The paper deals with the hygienic advantages of sanitation to treat dairy manure in full-scale biogas plants. The slurry samples were collected from two thermophilic biogas plants (55°C) and two mesophilic biogas plants (38°C) in Hokkaido Japan. A detectable number of Coli-aerogenes group and Enterococcus in the slurries after anaerobic digestion (AD) could not be found in either thermophilic biogas plants. However, in both mesophilic biogas plants the viable numbers of Coli-aerogenes group and Enterococcus were detected in the slurries even after anaerobic digestion. The mean decimation reduction time (T(90) ) values of the Coli-aerogenes group and Enterococcus in the slurries during mesophilic digestion were 13.3 days and 16.7 days, respectively.
authors.affiliation: Obihiro University of Agriculture and Veterinary Medicine, Hokkaido Kobe University, Nada, Japan.
authors.forename: Masahiro
authors.initials: M
authors.lastname: Iwasaki
authors.forename: Takaki
authors.initials: T
authors.lastname: Yamashiro
authors.forename: Nilmini
authors.initials: N
authors.lastname: Beneragama
authors.forename: Takehiro
authors.initials: T
authors.lastname: Nishida
authors.forename: Katsuya
authors.initials: K
authors.lastname: Kida
authors.forename: Ikko
authors.initials: I
authors.lastname: Ihara
authors.forename: June-Ichi
authors.initials: J
authors.lastname: Takahashi
authors.forename: Kazutaka
authors.initials: K
authors.lastname: Umetsu
mesh_terms: D001673:Biodegradation, Environmental; D056804:Biofuels; D019149:Bioreactors; D021902:Enterobacter aerogenes / Q000302:isolation & purification* / Q000472:pathogenicity; D016983:Enterococcus / Q000302:isolation & purification* / Q000472:pathogenicity; D004926:Escherichia coli / Q000302:isolation & purification* / Q000472:pathogenicity; D007564:Japan; D008372:Manure / Q000382:microbiology*; D012037:Refuse Disposal / Q000379:methods*; D013696:Temperature; D013997:Time Factors
chemical_list: D056804:Biofuels; D008372:Manure