Specific Methane Yield of Wetland Biomass in Dry and Wet Fermentation Technologies

Our study evaluated the specific methane yield (SMY) of selected wetland species subjected to wet and dry anaerobic digestion: <i>Carex elata</i> All. (CE), a mixture (~50/50) of <i>Carex elata</i> All. and <i>Carex acutiformis</i> L. (CA), <i>Phragmites aus...

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Main Authors: Robert Czubaszek, Agnieszka Wysocka-Czubaszek, Wendelin Wichtmann, Piotr Banaszuk
Format: Article
Language:English
Published: MDPI AG 2021-12-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/14/24/8373
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author Robert Czubaszek
Agnieszka Wysocka-Czubaszek
Wendelin Wichtmann
Piotr Banaszuk
author_facet Robert Czubaszek
Agnieszka Wysocka-Czubaszek
Wendelin Wichtmann
Piotr Banaszuk
author_sort Robert Czubaszek
collection DOAJ
description Our study evaluated the specific methane yield (SMY) of selected wetland species subjected to wet and dry anaerobic digestion: <i>Carex elata</i> All. (CE), a mixture (~50/50) of <i>Carex elata</i> All. and <i>Carex acutiformis</i> L. (CA), <i>Phragmites australis</i> (Cav.) Trin. ex Steud. (PA), <i>Typha latifolia</i> L. (TL) and <i>Phalaris arundinacea</i> L. (PAr). Plants were harvested in late September, and therefore, the study material was characterised by high lignin content. The highest lignin content (36.40 ± 1.04% TS) was observed in TL, while the lowest (16.03 ± 1.54% TS) was found in CA. PAr was characterised by the highest hemicellulose content (37.55 ± 1.04% TS), while the lowest (19.22 ± 1.22% TS) was observed in TL. Cellulose content was comparable in almost all plant species studied and ranged from 25.32 ± 1.48% TS to 29.37 ± 0.87% TS, except in PAr (16.90 ± 1.29% TS). The methane production potential differed significantly among species and anaerobic digestion (AD) technologies. The lowest SMY was observed for CE (121 ± 28 NL kg<sub>VS</sub><sup>−1</sup>) with dry fermentation (D–F) technology, while the SMY of CA was the highest for both technologies, 275 ± 3 NL kg<sub>VS</sub><sup>−1</sup> with wet fermentation (W–F) technology and 228 ± 1 NL kg<sub>VS</sub><sup>−1</sup> with D–F technology. The results revealed that paludi-biomass could be used as a substrate in both AD technologies; however, biogas production was more effective for W–F. Nonetheless, the higher methane content in the biogas and the lower energy consumption of technological processes for D–F suggest that the final amount of energy remains similar for both technologies. The yield is critical in energy production by the AD of wetland plants; therefore, a promising source of feedstock for biogas production could be biomass from rewetted and previously drained areas, which are usually more productive than natural habitats.
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spelling doaj.art-58ff29bed1f84b498d93a0cb9fab264d2023-11-23T08:06:23ZengMDPI AGEnergies1996-10732021-12-011424837310.3390/en14248373Specific Methane Yield of Wetland Biomass in Dry and Wet Fermentation TechnologiesRobert Czubaszek0Agnieszka Wysocka-Czubaszek1Wendelin Wichtmann2Piotr Banaszuk3Faculty 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, PolandSuccow Foundation, Partner in the Greifswald Mire Centre, Ellernholzstraße 1, 17489 Greifswald, GermanyFaculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, Wiejska 45A Str., 15-351 Bialystok, PolandOur study evaluated the specific methane yield (SMY) of selected wetland species subjected to wet and dry anaerobic digestion: <i>Carex elata</i> All. (CE), a mixture (~50/50) of <i>Carex elata</i> All. and <i>Carex acutiformis</i> L. (CA), <i>Phragmites australis</i> (Cav.) Trin. ex Steud. (PA), <i>Typha latifolia</i> L. (TL) and <i>Phalaris arundinacea</i> L. (PAr). Plants were harvested in late September, and therefore, the study material was characterised by high lignin content. The highest lignin content (36.40 ± 1.04% TS) was observed in TL, while the lowest (16.03 ± 1.54% TS) was found in CA. PAr was characterised by the highest hemicellulose content (37.55 ± 1.04% TS), while the lowest (19.22 ± 1.22% TS) was observed in TL. Cellulose content was comparable in almost all plant species studied and ranged from 25.32 ± 1.48% TS to 29.37 ± 0.87% TS, except in PAr (16.90 ± 1.29% TS). The methane production potential differed significantly among species and anaerobic digestion (AD) technologies. The lowest SMY was observed for CE (121 ± 28 NL kg<sub>VS</sub><sup>−1</sup>) with dry fermentation (D–F) technology, while the SMY of CA was the highest for both technologies, 275 ± 3 NL kg<sub>VS</sub><sup>−1</sup> with wet fermentation (W–F) technology and 228 ± 1 NL kg<sub>VS</sub><sup>−1</sup> with D–F technology. The results revealed that paludi-biomass could be used as a substrate in both AD technologies; however, biogas production was more effective for W–F. Nonetheless, the higher methane content in the biogas and the lower energy consumption of technological processes for D–F suggest that the final amount of energy remains similar for both technologies. The yield is critical in energy production by the AD of wetland plants; therefore, a promising source of feedstock for biogas production could be biomass from rewetted and previously drained areas, which are usually more productive than natural habitats.https://www.mdpi.com/1996-1073/14/24/8373paludi-biomasswetlandsanaerobic digestionspecific methane yield
spellingShingle Robert Czubaszek
Agnieszka Wysocka-Czubaszek
Wendelin Wichtmann
Piotr Banaszuk
Specific Methane Yield of Wetland Biomass in Dry and Wet Fermentation Technologies
Energies
paludi-biomass
wetlands
anaerobic digestion
specific methane yield
title Specific Methane Yield of Wetland Biomass in Dry and Wet Fermentation Technologies
title_full Specific Methane Yield of Wetland Biomass in Dry and Wet Fermentation Technologies
title_fullStr Specific Methane Yield of Wetland Biomass in Dry and Wet Fermentation Technologies
title_full_unstemmed Specific Methane Yield of Wetland Biomass in Dry and Wet Fermentation Technologies
title_short Specific Methane Yield of Wetland Biomass in Dry and Wet Fermentation Technologies
title_sort specific methane yield of wetland biomass in dry and wet fermentation technologies
topic paludi-biomass
wetlands
anaerobic digestion
specific methane yield
url https://www.mdpi.com/1996-1073/14/24/8373
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AT agnieszkawysockaczubaszek specificmethaneyieldofwetlandbiomassindryandwetfermentationtechnologies
AT wendelinwichtmann specificmethaneyieldofwetlandbiomassindryandwetfermentationtechnologies
AT piotrbanaszuk specificmethaneyieldofwetlandbiomassindryandwetfermentationtechnologies