Bacteria and archaea involved in anaerobic digestion of distillers grains with solubles
Article
Article Title | Bacteria and archaea involved in anaerobic digestion of distillers grains with solubles |
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ERA Journal ID | 3330 |
Article Category | Article |
Authors | Ziganshin, Ayrat M. (Author), Schmidt, Thomas (Author), Scholwin, Frank (Author), Il'Inskaya, Olga N. (Author), Harms, Hauke (Author) and Kleinsteuber, Sabine (Author) |
Journal Title | Applied Microbiology and Biotechnology |
Journal Citation | 89 (6), pp. 2039-2052 |
Number of Pages | 14 |
Year | 2011 |
Place of Publication | Germany |
ISSN | 0175-7598 |
1432-0614 | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s00253-010-2981-9 |
Web Address (URL) | http://link.springer.com/article/10.1007%2Fs00253-010-2981-9 |
Abstract | Cereal distillers grains, a by-product from bioethanol industry, proved to be a suitable feedstock for biogas production in laboratory scale anaerobic digesters. Five continuously stirred tank reactors were run under constant conditions and monitored for biogas production and composition along with other process parameters. Iron additives for sulfide precipitation significantly improved the process stability and efficiency, whereas aerobic pretreatment of the grains had no effect. The microbial communities in the reactors were investigated for their phylogenetic composition by terminal restriction fragment length polymorphism analysis and sequencing of 16S rRNA genes. The bacterial subcommunities were highly diverse, and their composition did not show any correlation with reactor performance. The dominant phylotypes were affiliated to the Bacteroidetes. The archaeal subcommunities were less diverse and correlated with the reactor performance. The well-performing reactors operated at lower organic loading rates and amended with iron chloride were dominated by aceticlastic methanogens of the genus Methanosaeta. The well-performing reactor operated at a high organic loading rate and supplemented with iron hydroxide was dominated by Methanosarcina ssp. The reactor without iron additives was characterized by propionate and acetate accumulation and high hydrogen sulfide content and was dominated by hydrogenotrophic methanogens of the genus Methanoculleus. |
Keywords | Biogas; DDGS; T-RFLP; Methanogenic archaea; Porphyromonadaceae; Actinomycetales |
ANZSRC Field of Research 2020 | 401199. Environmental engineering not elsewhere classified |
300699. Food sciences not elsewhere classified | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Kazan Federal University, Russia |
DBFZ German Biomass Research Centre, Germany | |
Helmholtz Centre for Environmental Research, Germany | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4432/bacteria-and-archaea-involved-in-anaerobic-digestion-of-distillers-grains-with-solubles
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