Scalable Nanoplastic Degradation in Water with Enzyme-Functionalized Porous Hydrogels

Journal of Hazardous Materials, Год журнала: 2025, Номер 487, С. 137196 - 137196

Опубликована: Янв. 13, 2025

Язык: Английский

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Photoaging Promotes Toxic Micro/Nanoplastics Release from PLA/PBAT Biodegradable Plastic in Gastrointestinal Condition

Environment & Health, Год журнала: 2025, Номер unknown

Опубликована: Янв. 14, 2025

The release of micro/nanoplastics (MNPs) from biodegradable plastics in gastrointestinal environments due to photoaging, along with their associated mechanisms and potential cytotoxicity, is largely unknown. Here, we show that poly(lactic acid)/poly(butylene adipate-co-terephthalate) (PLA/PBAT) films undergo ultraviolet resulting increased surface roughness a higher quantity MNPs on the surface. This aging process involves generation carbon- oxygen-centered free radicals, chain scission, formation oxidation products hydroxyl carbonyl groups. These can be released under water shear force, significantly increasing normalized mass loss aged approximately 0.128 mg/cm2 (18 times than unaged water). In environment, further increases about 0.196 (28 higher), likely enzymatic digestion ion-swelling effects. MNPs, primarily composed PLA, are smaller carry more negative charges conditions. THP-1 cell model, these affect viability dose-dependent manner. obtained through ultrafiltration, compared those collected via centrifugation, display broader size distribution induce pronounced toxicity cells, an EC50 243 mg/L. Preliminary comparative analysis indicates PLA/PBAT-derived present risks comparable to, or greater than, conventional plastic MNPs. findings underscore hazards plastics.

Язык: Английский

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Effect of microplastics on sulfate reduction in landfill leachate-saturated zone

Journal of Hazardous Materials, Год журнала: 2025, Номер unknown, С. 137928 - 137928

Опубликована: Март 1, 2025

Язык: Английский

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Review of Techniques for the Detection, Removal, and Transformation of Environmental Microplastics and Nanoplastics

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Март 28, 2025

Plastic residues have emerged as a significant challenge in the environmental sector. Microplastics, which are plastic fragments smaller than 5 mm, ability to disperse through atmosphere, oceans, and land, posing serious threat human health by accumulating food chain. However, their minuscule size makes it difficult effectively remove them from environment using current technologies. This work provides comprehensive overview of recent advancements microplastic detection removal For methods, we discuss commonly used techniques such microscopic analysis, thermal mass spectrometry, spectroscopic energy spectrometry. We also emphasize importance integrating various analytical data-processing achieve efficient nondestructive microplastics. In terms strategies, explored innovative methods technologies for extracting microplastics environment. These include physical like filtration, adsorption, magnetic separation; chemical coagulation–flocculation–sedimentation photocatalytic conversion; bioseparation activated sludge biodegradation. highlight promising potential converting contaminants into high-value chemicals. Additionally, identify technical challenges suggest future research directions advocate development unified standardized guide further on transformation

Язык: Английский

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Interfacial interactions of submicron plastics with carbon dots: insights into the interface properties of microplastic weathering

Water Research, Год журнала: 2025, Номер 277, С. 123377 - 123377

Опубликована: Фев. 23, 2025

Язык: Английский

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Global patterns of lake microplastic pollution: Insights from regional human development levels

The Science of The Total Environment, Год журнала: 2024, Номер 954, С. 176620 - 176620

Опубликована: Окт. 1, 2024

Язык: Английский

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What harmful microbes are lurking in the world’s 7 billion tonnes of plastic waste?

Nature, Год журнала: 2024, Номер 634(8032), С. 30 - 32

Опубликована: Окт. 1, 2024

Язык: Английский

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Genome-Wide Molecular Adaptation in Algal Primary Productivity Induced by Prolonged Exposure to Environmentally Realistic Concentration of Nanoplastics

ACS Nano, Год журнала: 2024, Номер 18(43), С. 29820 - 29831

Опубликована: Окт. 19, 2024

Little information is known about the long-term effects of nanoplastics (NPs) in aquatic environments, especially under environmental-related scenarios. Herein, three differently charged NPs (nPS, nPS-NH2, and nPS-COOH) were exposed at an environmentally realistic concentration (10 μg/L) for 100 days to explore variation primary productivity (i.e., algae) ecosystems. Our results demonstrated that algae adapted all types by enhancing algal number (by 10.34-16.52%), chlorophyll a 11.28-17.65%), carbon-fixing enzyme activity 49.19-68.33%), which further confirmed exposure from natural water culturing experiments. Based on chloroplast biovolume individual level, only nPS caused differentiation into two heterogeneous subpopulations (54.92 vs 45.08%), while nPS-NH2 nPS-COOH did not cause population. Moreover, molecular adaptation mechanisms unraveled integrating epigenomics transcriptomics. Mean methylation rates nPS, significantly elevated. In addition, direction gene expression regulation via differentially methylated regions associated with genes when was distinct those nPS-NH2. highlight importance assessing ecotoxicity provide useful understanding effect

Язык: Английский

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Synergetic and antagonistic effects of microplastics and perfluorooctanoic acid on constructive species in freshwater ecosystems

Journal of Cleaner Production, Год журнала: 2025, Номер unknown, С. 144926 - 144926

Опубликована: Янв. 1, 2025

Язык: Английский

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Nanoplastics and microplastics released from an enzyme-embedded biodegradable polyester during hydrolysis

Journal of Hazardous Materials, Год журнала: 2025, Номер 489, С. 137640 - 137640

Опубликована: Фев. 16, 2025

Язык: Английский

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