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Eco-Friendly and Effective Diatomaceous Earth/Peat (DEP) Microbial Carriers in the Anaerobic Biodegradation of Food Waste Products

cris.virtual.author-orcid0000-0001-6128-0315
cris.virtual.author-orcid0000-0003-0810-8086
cris.virtual.author-orcid0000-0001-5864-7171
cris.virtual.author-orcid0000-0003-0000-6157
cris.virtual.author-orcid0000-0003-1174-1915
cris.virtual.author-orcid0000-0003-0421-6071
cris.virtual.author-orcid0000-0002-4237-6407
cris.virtualsource.author-orcidab187d78-3916-499a-a077-9e8a0069cf71
cris.virtualsource.author-orcid90398b3a-5dd4-4557-a041-509a3389a7fb
cris.virtualsource.author-orcid05cf39ec-a98c-446c-9029-c67b8334b651
cris.virtualsource.author-orcid5e10caab-6ff8-471e-83cf-04cdbe8885b6
cris.virtualsource.author-orcid86cf2372-a835-4dbf-b1cb-6200ecf27dd5
cris.virtualsource.author-orcid9462fa94-74eb-4b70-864b-63d84802f9f0
cris.virtualsource.author-orcidbed1e4f8-04b9-4a1e-939f-aa94095604ec
dc.abstract.enThis article aims to present the results of research on anaerobic digestion (AD) of waste wafers (WF-control) and co-substrate system—waste wafers and cheese (WFC-control), combined with digested sewage sludge. The aim of this study was to assess the physicochemical parameters of the diatomaceous earth/peat (DEP; 3:1) carrier material and to verify its impact on the enzymatic activity and the process performance. The experiment was conducted in a laboratory, in a periodical mode of operation of bioreactors, under mesophilic conditions. The results of analyses of morphological-dispersive, spectroscopic, adsorption, thermal, and microbiological properties confirmed that the tested carrier material can be an excellent option to implement in biotechnological processes, especially in anaerobic digestion. As part of the experiment, the substrates, feedstock, and fermenting slurry were subjected to the analysis for standard process parameters. Monitoring of the course of AD was performed by measuring the values of key parameters for the recognition of the stability of the process: pH, VFA/TA ratio (volatile fatty acids/total alkalinity), the content of NH4+, and dehydrogenase activity, as an indicator of the intensity of respiratory metabolism of microorganisms. No significant signals of destabilization of the AD process were registered. The highest dehydrogenase activity, in the course of the process, was maintained in the WFC + DEP system. The microbial carrier DEP, used for the first time in the anaerobic digestion, had a positive effect on the yield of methane production. As a result, an increase in the volume of produced biogas was obtained for samples fermented with DEP carrier material for WF + DEP by 13.18% to a cumulative methane yield of 411.04 m3 Mg−1 VS, while for WFC + DEP by 12.85% to 473.91 m3 Mg−1 VS.
dc.affiliationWydział Inżynierii Środowiska i Inżynierii Mechanicznej
dc.affiliationWydział Nauk o Żywności i Żywieniu
dc.affiliationWydział Rolnictwa, Ogrodnictwa i Bioinżynierii
dc.affiliation.instituteKatedra Inżynierii Wodnej i Sanitarnej
dc.affiliation.instituteKatedra Inżynierii Biosystemów
dc.affiliation.instituteKatedra Mleczarstwa i Inżynierii Procesowej
dc.affiliation.instituteKatedra Gleboznawstwa i Mikrobiologii
dc.contributor.authorPilarska, Agnieszka
dc.contributor.authorPilarski, Krzysztof
dc.contributor.authorAdamski, Mariusz
dc.contributor.authorZaborowicz, Maciej
dc.contributor.authorCais-Sokolińska, Dorota
dc.contributor.authorWolna-Maruwka, Agnieszka
dc.contributor.authorNiewiadomska, Alicja
dc.date.access2026-02-06
dc.date.accessioned2026-02-25T08:17:04Z
dc.date.available2026-02-25T08:17:04Z
dc.date.copyright2022-05-09
dc.date.issued2022
dc.description.abstract<jats:p>This article aims to present the results of research on anaerobic digestion (AD) of waste wafers (WF-control) and co-substrate system—waste wafers and cheese (WFC-control), combined with digested sewage sludge. The aim of this study was to assess the physicochemical parameters of the diatomaceous earth/peat (DEP; 3:1) carrier material and to verify its impact on the enzymatic activity and the process performance. The experiment was conducted in a laboratory, in a periodical mode of operation of bioreactors, under mesophilic conditions. The results of analyses of morphological-dispersive, spectroscopic, adsorption, thermal, and microbiological properties confirmed that the tested carrier material can be an excellent option to implement in biotechnological processes, especially in anaerobic digestion. As part of the experiment, the substrates, feedstock, and fermenting slurry were subjected to the analysis for standard process parameters. Monitoring of the course of AD was performed by measuring the values of key parameters for the recognition of the stability of the process: pH, VFA/TA ratio (volatile fatty acids/total alkalinity), the content of NH4+, and dehydrogenase activity, as an indicator of the intensity of respiratory metabolism of microorganisms. No significant signals of destabilization of the AD process were registered. The highest dehydrogenase activity, in the course of the process, was maintained in the WFC + DEP system. The microbial carrier DEP, used for the first time in the anaerobic digestion, had a positive effect on the yield of methane production. As a result, an increase in the volume of produced biogas was obtained for samples fermented with DEP carrier material for WF + DEP by 13.18% to a cumulative methane yield of 411.04 m3 Mg−1 VS, while for WFC + DEP by 12.85% to 473.91 m3 Mg−1 VS.</jats:p>
dc.description.accesstimeat_publication
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if2,5
dc.description.number9
dc.description.points140
dc.description.versionfinal_published
dc.description.volume15
dc.identifier.doi10.3390/en15093442
dc.identifier.issn1996-1073
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/7458
dc.identifier.weblinkhttps://www.mdpi.com/1996-1073/15/9/3442
dc.languageen
dc.relation.ispartofEnergies
dc.relation.pagesart. 3442
dc.rightsCC-BY
dc.sciencecloudnosend
dc.share.typeOPEN_JOURNAL
dc.subject.endiatomaceous earth/peat carrier
dc.subject.enphysicochemical properties
dc.subject.enanaerobic biodegradation
dc.subject.enfood waste
dc.subject.enprocess efficiency
dc.titleEco-Friendly and Effective Diatomaceous Earth/Peat (DEP) Microbial Carriers in the Anaerobic Biodegradation of Food Waste Products
dc.title.volumeSpecial Issue Bioenergy Generation from Different Types of Waste by Anaerobic Digestion
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.issue9
oaire.citation.volume15