Diversity of the resident microbiota in a thermophilic municipal biogas plant

Title data

Weiss, Agnes ; Jérôme, Valérie ; Freitag, Ruth ; Mayer, Helmut K.:
Diversity of the resident microbiota in a thermophilic municipal biogas plant.
In: Applied Microbiology and Biotechnology. Vol. 81 (2008) Issue 1 . - pp. 163-173.
ISSN 1432-0614
DOI: https://doi.org/10.1007/s00253-008-1717-6

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Abstract in another language

Biogas plants continuously convert biological wastes mainly into a mixture of methane, CO2 and H2O---a conversion that is carried out by a consortium of bacteria and archaea. Especially in the municipal plants dedicated towards waste treatment, the reactor feed may vary considerably, exposing the resident microbiota to a changing variety of substrates. To evaluate how and if such changes influence the microbiology, an established biogas plant (6,600 m3, up to 600 m3 biogas per h) was followed over the course of more than 2 years via polymerase chain reaction--denaturing gradient gel electrophoresis of 16S rRNA genes and subsequent sequencing. Both the bacterial and the archaeal community remained stable over the investigation. Of the bacterial consortium, about half of the sequences were in decreasing order of occurrence: Thermoacetogenium sp., Anaerobaculum mobile, Clostridium ultunense, Petrotoga sp., Lactobacillus hammesii, Butyrivibrio sp., Syntrophococcus sucromutans, Olsenella sp., Tepidanaerobacter sp., Sporanaerobacter acetigenes, Pseudoramibacter alactolyticus, Lactobacillus fuchuensis or Lactobacillus sakei, Lactobacillus parabrevis or Lactobacillus spicheri and Enterococcus faecalis. The other half matched closely to ones from similar habitats (thermophilic anaerobic methanogenic digestion). The archaea consisted of Methanobrevibacter sp., Methanoculleus bourgensis, Methanosphaera stadtmanae, Methanimicrococcus blatticola and uncultured Methanomicrobiales. The role of these species in methane production is discussed.

Further data

Item Type:	Article in a journal
Refereed:	Yes
Institutions of the University:	Faculties Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Process Biotechnology Faculties > Faculty of Engineering Science > Chair Process Biotechnology > Chair Process Biotechnology - Univ.-Prof. Dr. Ruth Freitag Research Institutions > Research Units > ZET - Zentrum für Energietechnik Research Institutions Research Institutions > Research Units
Result of work at the UBT:	Yes
DDC Subjects:	600 Technology, medicine, applied sciences 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited:	24 Feb 2016 14:20
Last Modified:	09 Nov 2022 08:01
URI:	https://eref.uni-bayreuth.de/id/eprint/31037