Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/170383
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dc.contributor.authorLu, Xuhongen_US
dc.contributor.authorHe, Hongpingen_US
dc.contributor.authorWang, Yaoen_US
dc.contributor.authorGuo, Yuliangen_US
dc.contributor.authorFei, Xunchangen_US
dc.date.accessioned2023-09-11T02:57:18Z-
dc.date.available2023-09-11T02:57:18Z-
dc.date.issued2023-
dc.identifier.citationLu, X., He, H., Wang, Y., Guo, Y. & Fei, X. (2023). Masses and size distributions of mechanically fragmented microplastics from LDPE and EPS under simulated landfill conditions. Journal of Hazardous Materials, 445, 130542-. https://dx.doi.org/10.1016/j.jhazmat.2022.130542en_US
dc.identifier.issn0304-3894en_US
dc.identifier.urihttps://hdl.handle.net/10356/170383-
dc.description.abstractLandfills contain significant amounts of plastic waste (PW) and microplastics (MPs). However, the contributions of various PW fragmentation processes to the quality and quantity of MPs in landfills are unclear. In this study, LDPE and EPS pieces were mixed with sand to simulate landfilled solid waste, which experienced one-dimensional abiotic compression under vertical stress of 100-800 kPa for 1-300 days. The generated MPs were stained and quantified with a fluorescent microscope. The numbers and masses of the fragmented MPs increase with the increasing compression stress and duration following linear or exponential trends. EPS has a lower stiffness than LDPE, thus generates more MPs under the same compression conditions. Stress-dependent and time-dependent fragmentation mechanisms are distinguished, the former is driven by sand-plastic porosity reduction and the latter is due to microscopic interfacial creep with minimal porosity reduction. Most of the mechanically fragmented MPs have diameters < 100 µm. The MPs size distributions follow an established power-law model, which are dependent on stress, duration, porosity reduction, and fragmentation mechanism. Our results serve as conservative estimations on long-term MPs generation in real landfills, which provide confirmative and quantitative evidence to support the previous studies reporting the varied MPs abundances and properties within landfills.en_US
dc.description.sponsorshipEconomic Development Board (EDB)en_US
dc.description.sponsorshipNanyang Technological Universityen_US
dc.language.isoenen_US
dc.relation.ispartofJournal of Hazardous Materialsen_US
dc.rights© 2022 Elsevier B.V. All rights reserved.en_US
dc.subjectEngineering::Environmental engineeringen_US
dc.titleMasses and size distributions of mechanically fragmented microplastics from LDPE and EPS under simulated landfill conditionsen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.contributor.researchNanyang Environment and Water Research Instituteen_US
dc.contributor.researchResidues and Resource Reclamation Centreen_US
dc.identifier.doi10.1016/j.jhazmat.2022.130542-
dc.identifier.pmid37055960-
dc.identifier.scopus2-s2.0-85143872205-
dc.identifier.volume445en_US
dc.identifier.spage130542en_US
dc.subject.keywordsPlastic Wasteen_US
dc.subject.keywordsFragmentationen_US
dc.description.acknowledgementThe authors would like to acknowledge Nanyang Technological University (NTU, Singapore), Nanyang Environment and Water Research Institute (Singapore), and the Economic Development Board (Singapore) for the financial support and scholarships for this research.en_US
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item.grantfulltextnone-
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