We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Pore-Scale Insightsinto Microplastic Fiber Transportand Retention in Porous Media
Summary
Researchers investigated pore-scale transport and retention of polypropylene microfibers (20-150 micrometers) in a microfluidic porous media cell, demonstrating that fiber size and flexibility are the primary determinants of mobility versus entrapment. The findings reveal how agricultural soils act as sinks for microplastic fibers and how fiber trapping alters flow dynamics at the pore scale.
Agricultural soils have been identified as sinks for microplastic fibers (MPFs); however, little is known about their transport and behavior in these environments. This study tracked polypropylene microfibers (20–150 μm) in a microfluidic cell (dimensions) to better understand their potential movement and entrapment in soil-like porous media. The effects of MPF dimensions and elasticity on their mobility and retention were examined, along with how fiber trapping influenced the overall flow dynamics of the system. Results showed that fiber transport depends strongly on size and flexibility: fibers longer than 50 μm were highly retained, while shorter fibers followed preferential flow paths and experienced higher flow velocities. The retention mechanisms of fibers differed from those of spherical particles, and even a small number of trapped fibers were found to alter pore-scale flow patterns. In addition, several properties were identified as crucial for improving models and predictions of MPF behavior in porous systems. These findings provide insight into the dynamics of fiber entrapment and the complexities of nonspherical particle transport in porous media, emphasizing the need for further research in this field.
Sign in to start a discussion.
More Papers Like This
Pore-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.