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Moisture governs diesel biodegradation in sand soil – polystyrene microplastic have a negligible impact

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dc.abstract.enGlobal plastic production has reached 450 million tons annually, yet less than 15 % is recycled, with nearly one-third entering the environment, often as microplastics. This study investigates how microplastics influence pollutant behavior and soil microbiome function. We hypothesized that microplastics act as competitive sorbents, interacting with humic acids, which function like sponges, regulating the transient availability of xenobiotics through sorption and desorption. This may reduce their immediate toxicity, thereby facilitating biodegradation by the soil microbiome. To test this, we conducted 365-day microcosm experiments using sandy soil and diesel as the sole carbon and energy source. A characterized bacterial community, known for degradation, was added, alongside varying amounts of PS microplastic. Water content was adjusted to reflect permanent wilting point (PWP), field capacity (FC), and saturation (SAT). PS microplastics showed complete resistance to biological degradation, with minimal surface changes after 12 months. Diesel degradation kinetics were most significantly influenced by water availability. Compared to PWP, microbial communities mineralized diesel 2–7 times more effectively under FC conditions and 5–7 times more effectively under SAT conditions. These results challenge the biodegradability of PS and emphasize that unmodified PS does not significantly affect hydrophobic xenobiotic degradation processes. Water availability was the most decisive factor.
dc.affiliationWydział Rolnictwa, Ogrodnictwa i Biotechnologii
dc.affiliationWydział Nauk o Żywności i Żywieniu
dc.affiliation.instituteKatedra Biotechnologii i Mikrobiologii Żywności
dc.affiliation.instituteKatedra Biochemii i Biotechnologii
dc.contributor.authorCiesielski, Tomasz
dc.contributor.authorTitov, Ivan
dc.contributor.authorSemerád, Jaroslav
dc.contributor.authorParus, Anna
dc.contributor.authorMarecik, Roman
dc.contributor.authorCłapa, Tomasz
dc.contributor.authorNarożna, Dorota
dc.contributor.authorTrzebny, Artur
dc.contributor.authorKloziński, Arkadiusz
dc.contributor.authorSiwińska-Ciesielczyk, Katarzyna
dc.contributor.authorDabert, Mirosława
dc.contributor.authorTáncsics, András
dc.contributor.authorHeipieper, Hermann J.
dc.contributor.authorCajthaml, Tomáš
dc.contributor.authorWoźniak-Karczewska, Marta
dc.contributor.authorChrzanowski, Łukasz
dc.date.access2025-09-24
dc.date.accessioned2025-10-01T06:28:57Z
dc.date.available2025-10-01T06:28:57Z
dc.date.copyright2025-09-16
dc.date.issued2025
dc.description.accesstimeat_publication
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if11,3
dc.description.number15 October 2025
dc.description.points200
dc.description.versionfinal_published
dc.description.volume498
dc.identifier.doi10.1016/j.jhazmat.2025.139907
dc.identifier.eissn1873-3336
dc.identifier.issn0304-3894
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/5114
dc.identifier.weblinkhttps://www.sciencedirect.com/science/article/pii/S0304389425028262
dc.languageen
dc.relation.ispartofJournal of Hazardous Materials
dc.relation.pagesart. 139907
dc.rightsCC-BY
dc.sciencecloudnosend
dc.share.typeOTHER
dc.subject.enbioremediation
dc.subject.ensorption
dc.subject.enemerging contaminant
dc.titleMoisture governs diesel biodegradation in sand soil – polystyrene microplastic have a negligible impact
dc.typeJournalArticle
dspace.entity.typePublication