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Microbial community...
Microbial community development during syngas methanation in a trickle bed reactor with various nutrient sources
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- Cheng, G. (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för Molekylära vetenskaper,Department of Molecular Sciences,SLU Swedish University of Agricultural Sciences, Sweden
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- Gabler, Florian (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,RISE,Bioraffinaderi och energi,SLU Swedish University of Agricultural Sciences, Sweden,Institutionen för energi och teknik,Department of Energy and Technology
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- Pizzul, Leticia (author)
- RISE,Bioraffinaderi och energi
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- Olsson, Henrik (author)
- RISE,Bioraffinaderi och energi
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- Nordberg, Åke (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,RISE,Bioraffinaderi och energi,SLU Swedish University of Agricultural Sciences, Sweden,Institutionen för energi och teknik,Department of Energy and Technology,RISE Research Institutes of Sweden
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- Schnürer, Anna (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för Molekylära vetenskaper,Department of Molecular Sciences,SLU Swedish University of Agricultural Sciences, Sweden
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(creator_code:org_t)
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- 2022-07-08
- 2022
- English.
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In: Applied Microbiology and Biotechnology. - : Springer Science and Business Media Deutschland GmbH. - 0175-7598 .- 1432-0614. ; 106, s. 5317-5333
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Abstract
Subject headings
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- Microbial community development within an anaerobic trickle bed reactor (TBR) during methanation of syngas (56% H2, 30% CO, 14% CO2) was investigated using three different nutrient media: defined nutrient medium (241 days), diluted digestate from a thermophilic co-digestion plant operating with food waste (200 days) and reject water from dewatered digested sewage sludge at a wastewater treatment plant (220 days). Different TBR operating periods showed slightly different performance that was not clearly linked to the nutrient medium, as all proved suitable for the methanation process. During operation, maximum syngas load was 5.33 L per L packed bed volume (pbv) & day and methane (CH4) production was 1.26 L CH4/Lpbv/d. Microbial community analysis with Illumina Miseq targeting 16S rDNA revealed high relative abundance (20–40%) of several potential syngas and acetate consumers within the genera Sporomusa, Spirochaetaceae, Rikenellaceae and Acetobacterium during the process. These were the dominant taxa except in a period with high flow rate of digestate from the food waste plant. The dominant methanogen in all periods was a member of the genus Methanobacterium, while Methanosarcina was also observed in the carrier community. As in reactor effluent, the dominant bacterial genus in the carrier was Sporomusa. These results show that syngas methanation in TBR can proceed well with different nutrient sources, including undefined medium of different origins. Moreover, the dominant syngas community remained the same over time even when non-sterilised digestates were used as nutrient medium. Key points: •Independent of nutrient source, syngas methanation above 1 L/Lpbv/D was achieved. •Methanobacterium and Sporomusa were dominant genera throughout the process. •Acetate conversion proceeded via both methanogenesis and syntrophic acetate oxidation. Graphical abstract: [Figure not available: see fulltext.] © 2022, The Author(s).
Subject headings
- NATURVETENSKAP -- Biologi -- Mikrobiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Microbiology (hsv//eng)
Keyword
- Methanation
- Methanobacterium
- Microbial community
- Sporomusa
- Syngas
- Trickling bed reactor
- Anaerobic digestion
- Biogas
- Chemical reactors
- Effluents
- Hydrogenation
- Nutrients
- Sewage sludge
- Sludge digestion
- Synthesis gas
- Wastewater treatment
- Wetlands
- Bed reactors
- Digestate
- Microbial communities
- Nutrient media
- Nutrient sources
- Sporomusum
- Syn gas
- Tricklebed reactors
- Packed beds
Publication and Content Type
- ref (subject category)
- art (subject category)
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