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61,005 resultsShowing papers similar to Pore-Scale Insightsinto Microplastic Fiber Transportand Retention in Porous Media
ClearPore-Scale Insightsinto Microplastic Fiber Transportand Retention in Porous Media
Researchers used a microfluidic cell to examine pore-scale transport and retention of polypropylene microfibers in porous media representative of agricultural soil, finding that fiber dimensions and elasticity strongly govern mobility and entrapment behavior. The study provides mechanistic insight into why agricultural soils accumulate microplastic fibers and how trapped fibers influence local flow dynamics.
Pore-Scale Insightsinto Microplastic Fiber Transportand Retention in Porous Media
Researchers used a microfluidic cell to track polypropylene microfibers (20-150 micrometers) in soil-like porous media at pore scale, finding that fiber transport and retention depend strongly on fiber size and flexibility. Larger and stiffer fibers were more readily trapped at pore constrictions, and fiber accumulation altered overall flow dynamics in the porous medium.
Pore-Scale Insights into Microplastic Fiber Transport and Retention in Porous Media
Pore-scale imaging and experiments revealed how microplastic fibers move through and get retained in soil and sediment pores, showing that fiber shape and size strongly influence transport distance and accumulation zones. Understanding these dynamics is key to predicting where microplastics accumulate in terrestrial and subsurface environments.
Pore-Scale Visualized Transport and Retention of Fibrous and Fragmental Microplastics in Porous Media under Various Surfactant Conditions
Researchers used a pore-scale visualization system to observe how fibrous and fragmental microplastics move through porous media under different surfactant conditions. They found that fibrous microplastics had lower mobility because they tend to entangle and clog pore spaces, while fragmental particles moved more freely and responded differently to various surfactant types. The study provides detailed insight into how microplastic shape and surface chemistry influence their transport through soil and groundwater systems.
A synthetic microplastic fiber-manufacturing method and analysis of airborne microplastic fiber transport behavior in porous media
Researchers developed a laboratory method to manufacture synthetic microplastic fibers of 500-1000 micrometers and tested their transport through glass bead and sand columns, finding that the fibers penetrated and accumulated in porous media without clogging it or disrupting water flow regardless of concentration. The study provides early evidence that fiber-shaped microplastics can migrate through soil matrices without significantly altering hydraulic conductivity.
Retention and transport behavior of microplastic particles in water-saturated porous media
Researchers investigated microplastic transport in water-saturated porous media using polystyrene microspheres, finding that particle size primarily determined retention behavior, with 50 nm particles showing high mobility while 500 nm particles exhibited greater attachment and slower migration.
Transport and retention patterns of fragmental microplastics in saturated and unsaturated porous media: A real-time pore-scale visualization
Real-time pore-scale visualization using a microscope-coupled flow cell was used to track how fragmented microplastics move and deposit in saturated and unsaturated porous media, revealing distinct transport and retention patterns depending on water saturation conditions. The findings improve mechanistic understanding of how microplastics migrate through soils toward groundwater.
Retention mechanisms of microplastics in soil environments during saturation-desaturation cycles: Impact of hydrophobicity and pore geometry
This study used tiny lab models of soil pores to examine how microplastics get trapped in soil depending on their water-repelling properties and the shape of soil passages. More water-repellent microplastics stuck more firmly to surfaces and were retained at higher rates, up to 50% in some conditions. Understanding how microplastics move through soil is important for predicting whether they will reach groundwater or stay trapped near the surface where they can affect crops.
Experimental Visualization and Modeling of the Transport Behaviors of Monofilament Microplastic Fibers Through an Idealized Porous Media
Video imaging of monofilament microplastic fibers passing through a flow cell packed with glass beads showed that longer fibers had more complex trajectories and greater lateral displacement than shorter fibers or passive tracers, improving understanding of fiber transport through porous media.
Micro- and nanoplastics retention in porous media exhibits different dependence on grain surface roughness and clay coating with particle size
Researchers found that grain surface roughness and clay coatings affect the retention of microplastics and nanoplastics in porous media differently depending on particle size, with nanoplastics behaving oppositely to microplastics in certain soil conditions — complicating predictions of plastic transport in groundwater systems.
Behaviour and transport of microplastics under saturated flow conditions in sediments and soils
Researchers investigated the behaviour and transport of microplastics under saturated flow conditions in sediments and soils, examining how particle properties influence movement through porous media. The study aimed to improve understanding of subsurface microplastic fate and transport relevant to both soil and groundwater contamination.
Experimental Confirmation of the Interception History Paradigm for Colloid (Micro and Nanoparticle) Transport in Porous Media
Laboratory experiments confirmed the interception history paradigm for colloid filtration under chemically unfavorable conditions, demonstrating that microplastics and other colloidal particles follow predictable deposition patterns in porous media—providing mechanistic data relevant to modeling MP transport through soils and aquifers.
Microplastic polymer type impacts water infiltration and its own transport in soil
Researchers conducted laboratory soil column experiments to examine how microplastic polymer type affects both water infiltration rates and the transport of the plastic particles themselves through soil, testing the two most commonly used agricultural microplastic types under controlled hydrological conditions. The study found that polymer type significantly influenced both water flow dynamics and microplastic mobility in soil, with important implications for predicting plastic fate in agricultural and natural terrestrial ecosystems.
Transport and localization of microfibers around periodically and randomly placed circular obstacles
Researchers investigated the transport and migration behavior of elongated, deformable microfibers around periodically and randomly placed circular obstacles, motivated by the need to understand microplastic fiber movement in groundwater and porous environments. The study characterized how fiber shape and obstacle arrangement influence microfiber localization and transport patterns.
Microplastics/nanoplastics in porous media: Key factors controlling their transport and retention behaviors
This review examines what controls how microplastics and nanoplastics move through soil and other porous materials like sand and sediment. Factors like particle size, shape, surface charge, water flow speed, and the presence of other pollutants all influence whether plastics stay in place or travel deeper into groundwater. Understanding these transport behaviors is important for assessing the risk of microplastics contaminating underground drinking water sources.
Effects of pore water flow rate on microplastics transport in saturated porous media: Spatial distribution analysis
Researchers studied how water flow rate affects the transport and retention of polystyrene microplastics in saturated porous media using a two-dimensional flow cell. They found that higher flow rates reduced overall particle retention but created more clustered distribution patterns in the pore spaces. The study provides important insights into how microplastics migrate through soil and groundwater systems, which has implications for understanding subsurface contamination.
Preliminary investigation on effects of size, polymer type, and surface behaviour on the vertical mobility of microplastics in a porous media
Laboratory sand column experiments investigated how microplastic size, polymer type, and surface chemistry influence retention and transport behavior in subsurface environments. Results showed that smaller particles and those with surface modifications traveled farther, informing predictions of microplastic migration in soils and groundwater.
Processes controlling the transportation of microplastics in agricultural soils
Researchers investigated the physical processes controlling microplastic transport through agricultural soils, examining how soil structure, water flow, bioturbation, and particle properties interact to move microplastics from surface application sites deeper into the soil profile or laterally toward aquatic systems. The study addressed the dual role of agricultural soils as both sinks and potential sources of microplastic pollution to surrounding environments.
Mobility and retention of microplastic fibers and irregular plastic fragments in fluvial systems: an experimental flume study
Researchers conducted experimental flume studies to compare the mobility and retention of microplastic fibres and irregularly shaped plastic fragments in fluvial systems. The study found that particle shape strongly influences transport behaviour, with fibres exhibiting greater mobility and distinct retention patterns compared to irregular fragments, highlighting the need to move beyond spherical particle models in microplastic transport research.
Pore-scale visualization and microscale barrier mechanisms of microplastics transport in bio-based hydrogel modified soils
Researchers used pore-scale dynamic visualization to examine how bio-based hydrogel soil amendments affect microplastic transport and retention in porous media. The hydrogel modifications created microscale barriers that reduced microplastic mobility, suggesting soil stabilization techniques as a potential containment strategy.
Mechanism comparisons of transport-deposition-reentrainment between microplastics and natural mineral particles in porous media: A theoretical and experimental study
Researchers compared the transport, deposition, and re-entrainment behavior of microplastic particles versus natural mineral particles in porous media, finding key differences driven by density, surface charge, and shape that affect how microplastics migrate through soils and sediments.
Dry‐wet alternation and microplastics particle size effects on and contributions to soil water and soil pore properties
Researchers examined how microplastics of different particle sizes affect soil water properties and pore characteristics under repeated drying-wetting cycles typical of agricultural fields. They found that both microplastic size and the drying-wetting alternation influenced soil hydraulic parameters and pore distributions. The study suggests that microplastic residues in farmland soils may alter water retention and movement in ways that could affect agricultural productivity.
Microplastics transport in soils: A critical review
This critical review examined how microplastics are transported through soils, evaluating the role of particle size and shape, soil texture, water flow, and bioturbation in governing vertical and lateral transport. The authors identify knowledge gaps in field-scale transport processes and call for standardized leaching experiments to improve predictions of microplastic mobility in terrestrial systems.
Enhanced retention of microplastics in biopolymer-modified porous media: Insights from pore-scale visualization
Researchers introduced a plant-derived biopolymer (BDH) to modify porous media and demonstrated through pore-scale visualization that it significantly enhances retention of polymethyl methacrylate microplastics under varying flow conditions. Nuclear magnetic resonance tracking revealed that the biopolymer alters pore-space connectivity and creates attachment sites that reduce microplastic mobility in soils and groundwater systems.