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Fuel Pelletization of Digestate: A Pathway to Renewable and Sustainable Energy Sources

cris.lastimport.scopus2025-10-23T06:55:50Z
dc.abstract.enDigestate as a by-product of biogas production requires appropriate utilization methods to convert it into a valuable resource. This study investigated the feasibility of using digestate from a biogas plant as a sustainable feedstock for fuel pellet production. Digestate from an agricultural biogas plant was dried and pelletized, both with and without the addition of biochar. The resulting pellets were analyzed for their physicochemical properties, elemental composition, and calorific value. Samples of pellets were examined using a calorimeter and XRF analyzer. Results showed that digestate pellets exhibited promising fuel characteristics comparable to traditional wood pellets (17.07–17.11 MJ/kg). However, the addition of biochar, while increasing calorific value, led to high ash content and elevated concentrations of Cl, S, N, Ni, Zn, exceeding acceptable limits defined by ISO 17225-6. Consequently, biochar addition is not recommended due to potential environmental concerns upon combustion. The findings highlight that digestate with initial moisture content of 7–7.5% is the most suitable for pelletization in terms of mechanical durability and strength quality. Further research is recommended to fully assess the environmental and economic viability of digestate-based fuel pellets. This approach addresses two issues: it enables waste utilization and produces a valuable resource.
dc.affiliationWydział Inżynierii Środowiska i Inżynierii Mechanicznej
dc.affiliation.instituteKatedra Inżynierii Biosystemów
dc.contributor.authorVaskina, Iryna
dc.contributor.authorVaskin, Roman
dc.contributor.authorOstroha, Ruslan
dc.contributor.authorYukhymenko, Mykola
dc.contributor.authorSkydanenko, Maksym
dc.contributor.authorKupryaniuk, Karol
dc.contributor.authorDemkova, Lenka
dc.contributor.authorSydorenko, Serhii
dc.date.access2025-06-18
dc.date.accessioned2025-06-18T11:38:48Z
dc.date.available2025-06-18T11:38:48Z
dc.date.copyright2025-05-02
dc.date.issued2025
dc.description.abstract<jats:p>Digestate as a by-product of biogas production requires appropriate utilization methods to convert it into a valuable resource. This study investigated the feasibility of using digestate from a biogas plant as a sustainable feedstock for fuel pellet production. Digestate from an agricultural biogas plant was dried and pelletized, both with and without the addition of biochar. The resulting pellets were analyzed for their physicochemical properties, elemental composition, and calorific value. Samples of pellets were examined using a calorimeter and XRF analyzer. Results showed that digestate pellets exhibited promising fuel characteristics comparable to traditional wood pellets (17.07–17.11 MJ/kg). However, the addition of biochar, while increasing calorific value, led to high ash content and elevated concentrations of Cl, S, N, Ni, Zn, exceeding acceptable limits defined by ISO 17225-6. Consequently, biochar addition is not recommended due to potential environmental concerns upon combustion. The findings highlight that digestate with initial moisture content of 7–7.5% is the most suitable for pelletization in terms of mechanical durability and strength quality. Further research is recommended to fully assess the environmental and economic viability of digestate-based fuel pellets. This approach addresses two issues: it enables waste utilization and produces a valuable resource.</jats:p>
dc.description.accesstimeat_publication
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if2,8
dc.description.number2
dc.description.versionfinal_published
dc.description.volume6
dc.identifier.doi10.3390/fuels6020032
dc.identifier.issn2673-3994
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/2869
dc.identifier.weblinkhttps://www.mdpi.com/2673-3994/6/2/32
dc.languageen
dc.pbn.affiliationenvironmental engineering, mining and energy
dc.relation.ispartofFuels
dc.relation.pagesart. 32
dc.rightsCC-BY
dc.sciencecloudsend
dc.share.typeOPEN_JOURNAL
dc.subject.enash
dc.subject.enbiogas plant
dc.subject.engranulation
dc.subject.enpellets
dc.subject.enwaste-to-energy
dc.subject.plpopiół
dc.subject.plbiogazownia
dc.subject.plgranulacja
dc.subject.plpeletki
dc.subject.plenergia z odpadów
dc.titleFuel Pelletization of Digestate: A Pathway to Renewable and Sustainable Energy Sources
dc.title.volumeSpecial Issue Feature Papers in Fuels
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.issue2
oaire.citation.volume6