In-Situ Biogas Upgrading with Pulse H2 Additions:The Relevance of Methanogen Adaption and Inorganic Carbon
| Autor: | Lars Ditlev Mørck Ottosen, Niels V. Voigt, Michael Vedel Wegener Kofoed, Christian Holst Fischer, Jeppe Lund Nielsen, Nadieh de Jonge, Laura Mia Agneessens |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
In situ
Environmental Engineering 020209 energy Population Bioengineering 02 engineering and technology 010501 environmental sciences 01 natural sciences Total inorganic carbon Biogas 0202 electrical engineering electronic engineering information engineering Journal Article education Waste Management and Disposal 0105 earth and related environmental sciences education.field_of_study Waste management biology Renewable Energy Sustainability and the Environment Pulse (signal processing) business.industry General Medicine biology.organism_classification Pulp and paper industry Methanogen Renewable energy Environmental science business Anaerobic exercise |
| Zdroj: | Agneessens, L, Ottosen, L D M, Voigt, N V, Lund Nielsen, J, de Jonge, N, Holst-Fischer, C & Kofoed, M V W 2017, ' In-Situ Biogas Upgrading with Pulse H2 Additions : The Relevance of Methanogen Adaption and Inorganic Carbon ', Bioresource Technology, vol. 233, pp. 256-263 . https://doi.org/10.1016/j.biortech.2017.02.016 Agneessens, L M, Ottosen, L D M, Voigt, N V, Nielsen, J L, de Jonge, N, Fischer, C H & Kofoed, M V W 2017, ' In-situ biogas upgrading with pulse H2 additions : The relevance of methanogen adaption and inorganic carbon level ', Bioresource Technology, vol. 233, pp. 256-263 . https://doi.org/10.1016/j.biortech.2017.02.016 |
| DOI: | 10.1016/j.biortech.2017.02.016 |
| Popis: | Surplus electricity from fluctuating renewable power sources may be converted to CH4 via biomethanisation in anaerobic digesters. The reactor performance and response of methanogen population of mixed-culture reactors was assessed during pulsed H2 injections. Initial H2 uptake rates increased immediately and linearly during consecutive pulse H2 injections for all tested injection rates (0.3 to 1.7LH2/Lsludge/d), while novel high throughput mcrA sequencing revealed an increased abundance of specific hydrogenotrophic methanogens. These findings illustrate the adaptability of the methanogen population to H2 injections and positively affects the implementation of biomethanisation. Acetate accumulated by a 10-fold following injections exceeding a 4:1 H2:CO2 ratio and may act as temporary storage prior to biomethanisation. Daily methane production decreased for headspace CO2 concentrations below 12% and may indicate a high sensitivity of hydrogenotrophic methanogens to CO2 limitation. This may ultimately decide the biogas upgrading potential which can be achieved by biomethanisation. |
| Databáze: | OpenAIRE |
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