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Modeling the fate of nanoplastic and microplastic in rivers
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Modeling the Fate of Nano- and Microplastics in freshwater systems
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Researchers developed a spatially and temporally explicit fate model for nano-, micro-, and millimeter-scale polymer particles in the river Dommel, finding that particle size, biofilm formation, and water turbulence are the dominant controls on retention and downstream transport, with larger particles and biofouled surfaces settling preferentially in specific riverine hot spots.
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This review synthesized global research on microplastic pollution in rivers, covering sources, entry routes, and the key processes governing transport and transformation—including weathering, aggregation, sinking, and resuspension—along with ecotoxicological and socioeconomic impacts. Because rivers are the primary conduit transferring land-based microplastics to the ocean, understanding riverine dynamics is essential for designing effective interception strategies before contamination reaches marine food webs and human seafood supplies.
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Rivers function as the primary transport corridors for microplastics from land-based sources to oceans, carrying particles downstream through complex hydrological and biological interactions. Targeting river pollution hotspots with intervention measures is one of the most impactful strategies available for reducing the total global flux of microplastics into marine environments.
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