Co-Fermentation of Microalgae Biomass and <i>Miscanthus × giganteus</i> Silage—Assessment of the Substrate, Biogas Production and Digestate Characteristics
The development of a sustainable bioenergy market is currently largely fueled by energy crops, whose ever-increasing production competes with the global food and feed supply. Consequently, non-food crops need to be considered as alternatives for energy biomass production. Such alternatives include m...
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MDPI AG
2022-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/14/7291 |
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| author | Marcin Dębowski Joanna Kazimierowicz Marcin Zieliński Izabela Bartkowska |
| author_facet | Marcin Dębowski Joanna Kazimierowicz Marcin Zieliński Izabela Bartkowska |
| author_sort | Marcin Dębowski |
| collection | DOAJ |
| description | The development of a sustainable bioenergy market is currently largely fueled by energy crops, whose ever-increasing production competes with the global food and feed supply. Consequently, non-food crops need to be considered as alternatives for energy biomass production. Such alternatives include microalgal biomass, as well as energy crops grown on non-agricultural land. The aim of the present study was to evaluate how co-digestion of microalgal biomass with giant miscanthus silage affects feedstock properties, the biogas production process, biogas yields, methane fractions and the digestate profile. Combining giant miscanthus silage with microbial biomass was found to produce better C/N ratios than using either substrate alone. The highest biogas and methane production rates—628.00 ± 20.05 cm<sup>3</sup>/gVS and 3045.56 ± 274.06 cm<sup>3</sup> CH<sub>4</sub>/d—were obtained with 40% microalgae in the feedstock. In all variants, the bulk of the microbial community consisted of bacteria (EUB338) and archaea (ARC915). |
| first_indexed | 2024-03-09T10:22:59Z |
| format | Article |
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| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T10:22:59Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-2c8ea43698ea41f780c2fcf3a5b3ef962023-12-01T21:52:31ZengMDPI AGApplied Sciences2076-34172022-07-011214729110.3390/app12147291Co-Fermentation of Microalgae Biomass and <i>Miscanthus × giganteus</i> Silage—Assessment of the Substrate, Biogas Production and Digestate CharacteristicsMarcin Dębowski0Joanna Kazimierowicz1Marcin Zieliński2Izabela Bartkowska3Department of Environmental Engineering, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, 10-720 Olsztyn, PolandDepartment of Water Supply and Sewage Systems, Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, 15-351 Bialystok, PolandDepartment of Environmental Engineering, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, 10-720 Olsztyn, PolandDepartment of Water Supply and Sewage Systems, Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, 15-351 Bialystok, PolandThe development of a sustainable bioenergy market is currently largely fueled by energy crops, whose ever-increasing production competes with the global food and feed supply. Consequently, non-food crops need to be considered as alternatives for energy biomass production. Such alternatives include microalgal biomass, as well as energy crops grown on non-agricultural land. The aim of the present study was to evaluate how co-digestion of microalgal biomass with giant miscanthus silage affects feedstock properties, the biogas production process, biogas yields, methane fractions and the digestate profile. Combining giant miscanthus silage with microbial biomass was found to produce better C/N ratios than using either substrate alone. The highest biogas and methane production rates—628.00 ± 20.05 cm<sup>3</sup>/gVS and 3045.56 ± 274.06 cm<sup>3</sup> CH<sub>4</sub>/d—were obtained with 40% microalgae in the feedstock. In all variants, the bulk of the microbial community consisted of bacteria (EUB338) and archaea (ARC915).https://www.mdpi.com/2076-3417/12/14/7291co-digestionmethaneC/N ratioenergy cropsmicroalgal biomassbacterial community |
| spellingShingle | Marcin Dębowski Joanna Kazimierowicz Marcin Zieliński Izabela Bartkowska Co-Fermentation of Microalgae Biomass and <i>Miscanthus × giganteus</i> Silage—Assessment of the Substrate, Biogas Production and Digestate Characteristics Applied Sciences co-digestion methane C/N ratio energy crops microalgal biomass bacterial community |
| title | Co-Fermentation of Microalgae Biomass and <i>Miscanthus × giganteus</i> Silage—Assessment of the Substrate, Biogas Production and Digestate Characteristics |
| title_full | Co-Fermentation of Microalgae Biomass and <i>Miscanthus × giganteus</i> Silage—Assessment of the Substrate, Biogas Production and Digestate Characteristics |
| title_fullStr | Co-Fermentation of Microalgae Biomass and <i>Miscanthus × giganteus</i> Silage—Assessment of the Substrate, Biogas Production and Digestate Characteristics |
| title_full_unstemmed | Co-Fermentation of Microalgae Biomass and <i>Miscanthus × giganteus</i> Silage—Assessment of the Substrate, Biogas Production and Digestate Characteristics |
| title_short | Co-Fermentation of Microalgae Biomass and <i>Miscanthus × giganteus</i> Silage—Assessment of the Substrate, Biogas Production and Digestate Characteristics |
| title_sort | co fermentation of microalgae biomass and i miscanthus giganteus i silage assessment of the substrate biogas production and digestate characteristics |
| topic | co-digestion methane C/N ratio energy crops microalgal biomass bacterial community |
| url | https://www.mdpi.com/2076-3417/12/14/7291 |
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