| Download | - View final version: Maximizing the biomethane yield from algal biomass by integrating hydrothermal posttreatment of the anaerobic solid digestate (PDF, 1.3 MiB)
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| Author | Search for: Nuchdang, Sasikarn1; Search for: Frigon, Jean-Claude1; Search for: Roy, Caroline1; Search for: Pilon, Guillaume1; Search for: Phalakornkule, Chantaraporn; Search for: Guiot, Serge R.1 |
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| Affiliation | - National Research Council of Canada. Energy, Mining and Environment
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| Format | Text, Article |
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| Conference | Venice2016, Sixth International Symposium on Energy from Biomass and Waste, 14-17 November 2016, Venice, Italy |
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| Subject | microalgae; degradation; wet oxidation; hydrothermal carbonization; biomethane; anaerobic digestion |
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| Abstract | As an alternative to applying the hydrothermal treatment to the raw algal feedstock before the anaerobic digestion (i.e. pre-treatment), one considered a post- treatment scenario where anaerobic digestion is directly used as the primary treatment while the hydrothermal treatment is thereafter applied to the digestate. Hydrothermal treatments such as wet oxidation (WetOx) and hydrothermal carbonization (HTC) were compared at a temperature of 200°C, for initial pressure of 0.1 and 0.82 MPa, and no holding time after the process had reached the temperature setpoint. Both WetOx and HTC resulted in a substantial solids conversion (47% with HTC; 64-83% with WetOx) into soluble products, while some carbon loss was observed (20-33%). This generated high soluble products concentrations (from 6.2 to 10.9 g soluble chemical oxygen demand/L). Biomethane potential tests showed that these hydrothermal treatments allowed for a 4-fold improvement of the digestate anaerobic biodegradability, with a methane potential of about 200 LSTP CH4/kg volatile solids when based on the organic content of the untreated digestate. |
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| Publication date | 2016-11-14 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | NRC-EME-55778 |
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| NPARC number | 23002058 |
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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 | eec725a4-7834-4f91-9c87-5f2dbf533654 |
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| Record created | 2017-08-01 |
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| Record modified | 2020-05-30 |
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