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20 resultsShowing papers similar to A numerical model of microplastic transport for fluvial systems
ClearA numerical model of microplastic erosion, transport, and deposition for fluvial systems
Researchers developed a reduced-complexity numerical model of microplastic erosion, transport, and deposition in fluvial systems, building on sediment transport methods and applying it to the Têt River in France where outlet flux monitoring data were available. The model found that matching observed fluxes required 1-10 ppm volume concentration of microplastic in the top 0.5 meters of soil, and predicted that a large proportion of microplastics become trapped in river sediments rather than reaching the ocean.
A numerical model of microplastic transport for fluvial systems in the land-sea continuum
A reduced-complexity numerical model was developed to simulate how microplastics erode, transport, and deposit through river systems, applied to the Têt River in France. The model successfully reproduced observed microplastic fluxes and reveals that rivers likely act as significant reservoirs trapping plastic on its journey from land sources to the ocean, suggesting current estimates of marine microplastic inputs may be underestimates.
A numerical model of microplastic erosion, transport, and deposition for fluvial systems
Researchers developed a numerical model of microplastic erosion, transport, and deposition in river systems, finding that rivers act as temporary sinks trapping significant fractions of MPs before they reach the ocean, with implications for estimating marine MP loading from terrestrial sources.
Rivers as Conduits: A Comprehensive Model of Microplastic Fate and Transport
This study developed a comprehensive model of microplastic fate and transport in rivers, integrating processes of erosion, resuspension, sedimentation, and burial to simulate how microplastics move through river networks toward the ocean.
Comment on egusphere-2024-2788
Researchers developed a reduced-complexity model of microplastic erosion, transport, and deposition in river systems, building on established sediment transport methods to explore how fluvial processes trap and store microplastics as they move from terrestrial sources toward the marine environment, finding that rivers may represent an important global reservoir of microplastic pollution.
A Lagrangian Model for Microplastics Transport in Rivers
Researchers developed a Lagrangian computational model to simulate how microplastics are transported through river systems, accounting for particle buoyancy, turbulence, and settling behavior. The model provides a tool for predicting microplastic fate and accumulation in freshwater environments.
Reply to reviewer comments on egusphere-2024-2788
Researchers developed a reduced-complexity model of microplastic erosion, transport, and deposition in river systems based on sediment transport methods, applying it to the Tet River in France and finding that the model accurately captures observed microplastic flux at the outlet when assuming 1-10 ppm volume concentration of microplastic in the top 0.5 m of soil with 300 µm grain size particles settling at approximately 10^-4 m/sec.
Modeling impacts of river hydrodynamics on fate and transport of microplastics in riverine environments
Researchers built a computer model to simulate how microplastics travel and transform in river systems, accounting for particle aggregation and breakage driven by water flow. They found that microplastics clump together significantly in the early stages after entering a river, which changes the size distribution of particles flowing downstream. The study suggests that river conditions play a major role in determining what size and form of microplastics eventually reach the ocean.
On modeling the fate of microplastics along river networks
Researchers developed and applied a modeling framework to simulate the fate and transport of microplastics along river network systems, treating rivers as key conduits transferring land-based microplastic pollution to marine environments. The model accounted for particle ingestion risks to aquatic organisms and evaluated the long-term persistence and transport dynamics of microplastics across freshwater networks.
Modeling microplastic dynamics in riverine systems: fate and transport analysis
Researchers developed a computer model to simulate how microplastics travel through river systems, accounting for how they enter from human activities and how they settle, resuspend, and deposit along riverbanks. The model was applied to the Tame River in the UK using four different scenarios based on plastic particle types like fibers, fragments, and pellets. The study provides a tool for predicting where microplastics accumulate in rivers, which could help target cleanup and monitoring efforts.
Modelling the Fate of Microplastics in river bed sediments.
Researchers modeled microplastic transport, deposition, and burial in river bed sediments under varying hydrological conditions. River bed sediments were found to act as long-term reservoirs for microplastics, with periodic high-flow events temporarily resuspending and redistributing particles.
Catchment-scale mechanistic predictions of microplastic transport and distribution across land and water
Researchers developed the first catchment-scale model successfully predicting microplastic transport from land to water, validated against field data, revealing how soil accumulation, runoff dynamics, and in-stream transport interact to determine where microplastics concentrate before reaching the ocean.
Dispersal and transport of microplastic particles under different flow conditions in riverine ecosystem
Researchers developed a particle-tracking model combined with hydrodynamic simulation to study how microplastics travel through river systems under different water flow conditions. They found that flow speed, turbulence, and river channel features significantly influence where microplastics accumulate and how far they travel. The study provides a useful tool for predicting microplastic transport patterns and identifying pollution hotspots in river ecosystems.
Microplastic transport in European river networks
Researchers estimated the average annual load of microplastics transported to seas and oceans from 125 European catchments by coupling a mass balance model with a graph-theory river network model incorporating wastewater treatment plant effluents, surface runoff, and combined sewer overflows.
Modelling Microplastic Transport in River Systems Using the SWAT Hydrological Model
Researchers developed a novel modelling approach using the SWAT hydrological model to simulate microplastic transport through river basin systems, integrating hydrological and physical plastic properties. The model provides a tool for understanding the spatial and temporal dynamics of freshwater microplastic pollution to support mitigation planning.
Quantifying the impact of biofouling on microplastic transport: a modeling study
Researchers developed a modeling study to quantify how biofouling -- the attachment of microorganisms to microplastic surfaces -- affects microplastic transport in river systems by altering particle size, shape, density, and settling velocity, using quantified data to simulate transport dynamics.
Exploring the Sensitivity of Microplastic Accumulation Zones in Rivers Using High-Performance Particle Transport Modelling
Researchers applied high-performance particle transport modelling to explore the sensitivity of microplastic accumulation zones in rivers, identifying key hydrodynamic factors that govern where microplastics concentrate. The modelling approach provides a tool for predicting hotspot areas of microplastic deposition in fluvial environments.
Modeling the transport of microplastics along river networks
Researchers built a mathematical model to predict how microplastics travel through river networks, combining water flow dynamics with estimates of human plastic inputs. They tested the model against real-world data from three river systems worldwide and found it reliably predicted microplastic concentrations. The tool could help identify pollution hotspots and guide cleanup priorities across entire river basins.
Transport processes of microplastic particles in the fluvial environment : erosion, transport and deposition
This thesis examines how microplastics are eroded, transported, and deposited in river systems, tracing their movement from land sources to the ocean. The research fills an important gap in understanding how rivers act as conduits for microplastic pollution and what processes determine where plastic particles accumulate in freshwater environments.
Modelling the Fate of Microplastics in river bed sediments.
Researchers modeled the fate of microplastics deposited in river bed sediments, examining how hydrological conditions influence their distribution, burial, and potential for downstream transport. The models revealed that river bed sediments act as significant long-term reservoirs for microplastic pollution.