Premium
The effect of temperature on survival of pathogenic bacteria in biogas plants
Author(s) -
IWASAKI Masahiro,
YAMASHIRO Takaki,
BENERAGAMA Nilmini,
NISHIDA Takehiro,
KIDA Katsuya,
IHARA Ikko,
TAKAHASHI Juneichi,
UMETSU Kazutaka
Publication year - 2011
Publication title -
animal science journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.606
H-Index - 38
eISSN - 1740-0929
pISSN - 1344-3941
DOI - 10.1111/j.1740-0929.2011.00887.x
Subject(s) - biogas , mesophile , anaerobic digestion , slurry , thermophile , digestion (alchemy) , food science , manure , biology , pulp and paper industry , chemistry , bacteria , environmental science , agronomy , environmental engineering , methane , ecology , engineering , chromatography , genetics
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.