Common Reed and Maize Silage Co-Digestion as a Pathway towards Sustainable Biogas Production

The key factor in sustainable biogas production is a feedstock whose production has no adverse impact on the environment. Since maize cultivation harms the environment, biogas plant operators seek a more sustainable feedstock. Common reed is an invasive species mown as part of wetland conservation m...

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Main Authors: Robert Czubaszek, Agnieszka Wysocka-Czubaszek, Wendelin Wichtmann, Grzegorz Zając, Piotr Banaszuk
Format: Article
Language:English
Published: MDPI AG 2023-01-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/16/2/695
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author Robert Czubaszek
Agnieszka Wysocka-Czubaszek
Wendelin Wichtmann
Grzegorz Zając
Piotr Banaszuk
author_facet Robert Czubaszek
Agnieszka Wysocka-Czubaszek
Wendelin Wichtmann
Grzegorz Zając
Piotr Banaszuk
author_sort Robert Czubaszek
collection DOAJ
description The key factor in sustainable biogas production is a feedstock whose production has no adverse impact on the environment. Since maize cultivation harms the environment, biogas plant operators seek a more sustainable feedstock. Common reed is an invasive species mown as part of wetland conservation measures, or it can be harvested from paludiculture. This study aimed to investigate wet co-digestion of maize silage with 10%, 30%, and 50% content of common reed silage using the biochemical methane potential (BMP) test. In addition, the potential energy generated and avoided greenhouse gas (GHG) emissions were calculated. The substitution of maize silage with 10%, 30%, and 50% content of reed silage reduced the methane (CH<sub>4</sub>) yield by 13%, 28%, and 35%, respectively. A disadvantage of reed silage addition was increased ammonia (NH<sub>3</sub>) and hydrogen sulfide (H<sub>2</sub>S) concentrations in biogas. Although substituting maize silage with reed silage decreases the CH<sub>4</sub> yield, the co-digestion of maize and reed biomass from conservation or paludiculture may positively affect environmental aspects of energy generation. The substitution of maize with reed in biogas plants decreases the area used for maize cultivation and reduces GHG emissions.
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spelling doaj.art-b273524cfbac49c4b55f4621aa1fad492023-11-30T22:02:42ZengMDPI AGEnergies1996-10732023-01-0116269510.3390/en16020695Common Reed and Maize Silage Co-Digestion as a Pathway towards Sustainable Biogas ProductionRobert Czubaszek0Agnieszka Wysocka-Czubaszek1Wendelin Wichtmann2Grzegorz Zając3Piotr Banaszuk4Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, Wiejska 45A Str., 15-351 Bialystok, PolandFaculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, Wiejska 45A Str., 15-351 Bialystok, PolandPartners in the Greifswald Mire Centre, Succow Foundation and Greifswald University, Ellernholzstraße 1, 17489 Greifswald, GermanyFaculty of Production Engineering, University of Life Sciences in Lublin, Głęboka 28 Str., 20-950 Lublin, PolandFaculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, Wiejska 45A Str., 15-351 Bialystok, PolandThe key factor in sustainable biogas production is a feedstock whose production has no adverse impact on the environment. Since maize cultivation harms the environment, biogas plant operators seek a more sustainable feedstock. Common reed is an invasive species mown as part of wetland conservation measures, or it can be harvested from paludiculture. This study aimed to investigate wet co-digestion of maize silage with 10%, 30%, and 50% content of common reed silage using the biochemical methane potential (BMP) test. In addition, the potential energy generated and avoided greenhouse gas (GHG) emissions were calculated. The substitution of maize silage with 10%, 30%, and 50% content of reed silage reduced the methane (CH<sub>4</sub>) yield by 13%, 28%, and 35%, respectively. A disadvantage of reed silage addition was increased ammonia (NH<sub>3</sub>) and hydrogen sulfide (H<sub>2</sub>S) concentrations in biogas. Although substituting maize silage with reed silage decreases the CH<sub>4</sub> yield, the co-digestion of maize and reed biomass from conservation or paludiculture may positively affect environmental aspects of energy generation. The substitution of maize with reed in biogas plants decreases the area used for maize cultivation and reduces GHG emissions.https://www.mdpi.com/1996-1073/16/2/695biogasspecific methane yieldpaludicultureelectricityheatgreenhouse gases emissions
spellingShingle Robert Czubaszek
Agnieszka Wysocka-Czubaszek
Wendelin Wichtmann
Grzegorz Zając
Piotr Banaszuk
Common Reed and Maize Silage Co-Digestion as a Pathway towards Sustainable Biogas Production
Energies
biogas
specific methane yield
paludiculture
electricity
heat
greenhouse gases emissions
title Common Reed and Maize Silage Co-Digestion as a Pathway towards Sustainable Biogas Production
title_full Common Reed and Maize Silage Co-Digestion as a Pathway towards Sustainable Biogas Production
title_fullStr Common Reed and Maize Silage Co-Digestion as a Pathway towards Sustainable Biogas Production
title_full_unstemmed Common Reed and Maize Silage Co-Digestion as a Pathway towards Sustainable Biogas Production
title_short Common Reed and Maize Silage Co-Digestion as a Pathway towards Sustainable Biogas Production
title_sort common reed and maize silage co digestion as a pathway towards sustainable biogas production
topic biogas
specific methane yield
paludiculture
electricity
heat
greenhouse gases emissions
url https://www.mdpi.com/1996-1073/16/2/695
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