| Download | - View accepted manuscript: Methane production in an UASB reactor operated under periodic mesophilic-thermohilic conditions (PDF, 662 KiB)
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| DOI | Resolve DOI: https://doi.org/10.1002/bit.21850 |
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| Author | Search for: Bourque, J.-S.1; Search for: Guiot, S. R.1; Search for: Tartakovsky, B.1 |
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| Affiliation | - National Research Council of Canada. NRC Biotechnology Research Institute
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| Format | Text, Article |
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| Subject | environmental; periodic operation; temperature; thermophilic-mesophilic consortium; anaerobic degradation |
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| Abstract | Methane production was studied in a laboratory-scale 10 L anaerobic upflow sludge bed (UASB) reactor with periodic variations of the reactor temperature. On a daily basis the temperature was varied between 35 and 45°C or 35 and 55°C with a heating period of 6 h. Each temperature increase was accompanied by an increase in methane production and a decrease in the concentration of soluble organic matter in the effluent. In comparison to a reactor operated at 35°C, a net increase in methane production of up to 22% was observed. Batch activity tests demonstrated a tolerance of mesophilic methanogenic populations to short-term, 2–6 h, temperature increases, although activity of acetoclastic methanogens decreased after 6 h exposure to a temperature of 55°C. 16S sequencing of DGGE bands revealed proliferation of temperature-tolerant Methanospirillum hungatii sp. in the reactor. |
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| Publication date | 2008-03-10 |
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| In | |
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| Language | English |
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| NRC number | NRCC 49099 |
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| NPARC number | 12440520 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | de129452-3237-449b-96ed-73b5545691d3 |
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| Record created | 2009-10-26 |
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| Record modified | 2020-04-15 |
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