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Quantitative and Qualitative Changes in the Genetic Diversity of Bacterial Communities in Anaerobic Bioreactors with the Diatomaceous Earth/Peat Cell Carrier

cris.virtual.author-orcid0000-0001-6128-0315
cris.virtual.author-orcid0000-0003-0421-6071
cris.virtual.author-orcid0000-0002-4237-6407
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cris.virtual.author-orcid0000-0001-9879-3683
cris.virtual.author-orcid0000-0003-0810-8086
cris.virtualsource.author-orcidab187d78-3916-499a-a077-9e8a0069cf71
cris.virtualsource.author-orcid9462fa94-74eb-4b70-864b-63d84802f9f0
cris.virtualsource.author-orcidbed1e4f8-04b9-4a1e-939f-aa94095604ec
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cris.virtualsource.author-orcidca072ee5-5e34-4a46-8369-e7963fb188c0
cris.virtualsource.author-orcid90398b3a-5dd4-4557-a041-509a3389a7fb
dc.abstract.enThis paper analyses the impact of the diatomaceous earth/peat (DEP; 3:1) microbial carrier on changes in the bacterial microbiome and the development of biofilm in the anaerobic digestion (AD) of confectionery waste, combined with digested sewage sludge as inoculum. The physicochemical properties of the carrier material are presented, with particular focus on its morphological and dispersion characteristics, as well as adsorption and thermal properties. In this respect, the DEP system was found to be a suitable carrier for both mesophilic and thermophilic AD. The evaluation of quantitative and qualitative changes in the genetic diversity of bacterial communities, carried out using next-generation sequencing (NGS), showed that the material has a modifying effect on the bacterial microbiome. While Actinobacteria was the most abundant cluster in the WF-control sample (WF—waste wafers), Firmicutes was the dominant cluster in the digested samples without the carrier (WF-dig.; dig.—digested) and with the carrier (WF + DEP). The same was true for the count of Proteobacteria, which decreased twofold during biodegradation in favor of Synergistetes. The Syntrophomonas cluster was identified as the most abundant genus in the two samples, particularly in WF + DEP. This information was supplemented by observations of morphological features of microorganisms carried out using fluorescence microscopy. The biodegradation process itself had a significant impact on changes in the microbiome of samples taken from anaerobic bioreactors, reducing its biodiversity. As demonstrated by the results of this innovative method, namely the BioFlux microfluidic flow system, the decrease in the number of taxa in the digested samples and the addition of DEP contributed to the microbial adhesion in the microfluidic system and the formation of a stable biofilm.
dc.affiliationWydział Inżynierii Środowiska i Inżynierii Mechanicznej
dc.affiliationWydział Rolnictwa, Ogrodnictwa i Bioinżynierii
dc.affiliation.instituteKatedra Inżynierii Wodnej i Sanitarnej
dc.affiliation.instituteKatedra Gleboznawstwa i Mikrobiologii
dc.affiliation.instituteKatedra Ekologii i Ochrony Środowiska
dc.affiliation.instituteKatedra Inżynierii Biosystemów
dc.contributor.authorPilarska, Agnieszka
dc.contributor.authorWolna-Maruwka, Agnieszka
dc.contributor.authorNiewiadomska, Alicja
dc.contributor.authorGrządziel, Jarosław
dc.contributor.authorGałązka, Anna
dc.contributor.authorPaluch, Emil
dc.contributor.authorBorowiak, Klaudia
dc.contributor.authorPilarski, Krzysztof
dc.date.access2026-02-02
dc.date.accessioned2026-02-18T09:57:23Z
dc.date.available2026-02-18T09:57:23Z
dc.date.copyright2022-08-18
dc.date.issued2022
dc.description.abstract<jats:p>This paper analyses the impact of the diatomaceous earth/peat (DEP; 3:1) microbial carrier on changes in the bacterial microbiome and the development of biofilm in the anaerobic digestion (AD) of confectionery waste, combined with digested sewage sludge as inoculum. The physicochemical properties of the carrier material are presented, with particular focus on its morphological and dispersion characteristics, as well as adsorption and thermal properties. In this respect, the DEP system was found to be a suitable carrier for both mesophilic and thermophilic AD. The evaluation of quantitative and qualitative changes in the genetic diversity of bacterial communities, carried out using next-generation sequencing (NGS), showed that the material has a modifying effect on the bacterial microbiome. While Actinobacteria was the most abundant cluster in the WF-control sample (WF—waste wafers), Firmicutes was the dominant cluster in the digested samples without the carrier (WF-dig.; dig.—digested) and with the carrier (WF + DEP). The same was true for the count of Proteobacteria, which decreased twofold during biodegradation in favor of Synergistetes. The Syntrophomonas cluster was identified as the most abundant genus in the two samples, particularly in WF + DEP. This information was supplemented by observations of morphological features of microorganisms carried out using fluorescence microscopy. The biodegradation process itself had a significant impact on changes in the microbiome of samples taken from anaerobic bioreactors, reducing its biodiversity. As demonstrated by the results of this innovative method, namely the BioFlux microfluidic flow system, the decrease in the number of taxa in the digested samples and the addition of DEP contributed to the microbial adhesion in the microfluidic system and the formation of a stable biofilm.</jats:p>
dc.description.accesstimeat_publication
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if6,0
dc.description.number16
dc.description.points140
dc.description.versionfinal_published
dc.description.volume11
dc.identifier.doi10.3390/cells11162571
dc.identifier.issn2073-4409
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/7374
dc.identifier.weblinkhttps://www.mdpi.com/2073-4409/11/16/2571
dc.languageen
dc.relation.ispartofCells
dc.relation.pagesart. 2571
dc.rightsCC-BY
dc.sciencecloudnosend
dc.share.typeOPEN_JOURNAL
dc.subject.enmicrobial carrier
dc.subject.enanaerobic bioreactors
dc.subject.engenetic diversity
dc.subject.enmicrobial adhesion
dc.subject.enBioFlux system
dc.subject.enmicrobiome visualisation
dc.titleQuantitative and Qualitative Changes in the Genetic Diversity of Bacterial Communities in Anaerobic Bioreactors with the Diatomaceous Earth/Peat Cell Carrier
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.issue16
oaire.citation.volume11