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61,005 resultsShowing papers similar to Secondary nanoplastic transport in sand and in soil
ClearThe Effect of Polymer Type and Particle Concentration on Microplastic Transport Mechanisms in Saturated Porous Media
Scientists studied how tiny plastic particles move through soil and groundwater by testing different types of plastics at various concentrations. They found that the amount and type of plastic affects how far these particles travel underground, and that bacteria growing on the plastic surfaces can change how they move through soil. This research helps us better understand how microplastics might contaminate our drinking water sources and food supply.
Enhanced mobility and dynamic retention of nanoplastics in mineral coated porous media.
Scientists studied how tiny plastic particles move through different types of soil and sand that might be found in groundwater systems. They discovered that these nanoplastics travel much farther and faster through soil than previously thought, especially when water flows quickly. This matters because it suggests that plastic pollution from things like food packaging and cosmetics could spread more widely through our drinking water sources than we realized.
Effects of co-present mineral colloids on the transport of microplastics in porous media: The key role of hydrochemical and hydrodynamic conditions
Scientists studied how tiny plastic particles (microplastics) move through soil and sand when mixed with natural clay particles. They found that the combination of different clay types and water conditions can either help microplastics travel further underground or trap them in place. This research helps us better understand how microplastics might contaminate groundwater sources that provide our drinking water.
Transport and Retention of Unstable Nanoparticle Suspensions in Porous Media: Effects of Salinity and Hydrophobicity Observed in Microfluidic Pore Networks
Scientists studied how tiny plastic particles move through soil and rock underground, which helps us understand what happens to microplastics in our environment. They found that salty water and oily surfaces cause these particles to clump together and get permanently stuck in the ground, which could affect how microplastics spread through groundwater. This research helps us better predict where microplastics might end up and how to design systems to trap them before they reach our drinking water sources.
Studying the transport and retention of naturally occurring microplastics (MPs) in sandy soils using column experiments
Scientists used laboratory experiments to study how microplastics move through sandy soils, which is relevant for understanding whether they can reach groundwater used for drinking. The findings help assess the risk of microplastic contamination in underground water supplies.
How soil moisture and flow regime drive microplastic transport in the vadose zone: insight from modelling and column experiments
Scientists studied how tiny plastic particles move through soil toward underground water sources that we use for drinking water. They found that plastic particles travel very differently depending on how wet or dry the soil is - sometimes getting trapped, other times moving quickly through the ground. This research helps us better understand how microplastics might contaminate our groundwater supplies, which is important for protecting drinking water quality.
Deposition of environmentally relevant nanoplastic models in sand during transport experiments
This study tracked how environmentally relevant nanoplastic models move through sand columns in laboratory conditions, finding they can be transported substantial distances in groundwater. The findings raise concerns about nanoplastic contamination of soil and aquifer systems, which are critical sources of drinking water.
Transport and retention of polyethylene microplastics in saturated porous media: Effect of physicochemical properties
Researchers studied how polyethylene microplastics move through water-saturated sand and gravel, testing the effects of particle size, water chemistry, and flow speed. They found that smaller microplastics traveled farther through the porous material, while higher salt concentrations and lower flow rates increased particle retention. The findings help explain how microplastics may spread through groundwater systems under real-world conditions.
Polymer-specific transfer and retention of microplastics at the river–sediment–groundwater interface
Scientists studied how tiny plastic particles move from rivers into underground water that could become drinking water. They found that different types of plastics behave differently - some float and stay in rivers, while heavier plastics like those from bottles and pipes sink into riverbeds and can travel into groundwater supplies. This research is important because it helps us understand how microplastics might contaminate the underground water sources we rely on for drinking water.
Microplastics transport in soils: A critical review
Researchers reviewed how microplastics move through soil, finding that their transport depends on a complex mix of particle properties, soil chemistry, water flow, and biological activity — and that these factors often interact in ways that produce contradictory results across studies. The review maps these knowledge gaps and calls for more controlled experiments to predict where microplastics accumulate and how they might reach groundwater or crops.
Plastic Beyond the Surface: Multi-Scale Alteration Mechanisms of Polypropylene in Soils
Scientists studied plastic fragments that had been buried in farm soil for 30 years and found they break down into tiny particles called nanoplastics that can carry harmful metals like lead. These nanoplastics are so small they can move easily through soil and potentially into our food and water supply. This research helps explain how everyday plastic waste in our environment creates these concerning tiny particles that could affect human health.
Quantitative Linking of Nanoscale Interactions to Continuum-Scale Nanoparticle and Microplastic Transport in Environmental Granular Media
Researchers successfully linked the atomic-scale forces between plastic nanoparticles and sand grains to predictions of how those particles move through soil and groundwater at larger scales. This advances the ability to model microplastic transport in the environment, which is important for assessing contamination of drinking water sources.
A meta-analysis of nanomaterial and nanoplastic fate in small column experiments and implications for fate in soils
This meta-analysis pools data from column experiments to understand how nanoplastics behave and move through soil. The findings help predict where nanoplastics end up in the ground, which matters for human health because these particles can leach into groundwater or be taken up by crops growing in contaminated soil.
Vertical migration of microplastics in porous media: Multiple controlling factors under wet-dry cycling
Researchers studied how microplastics move vertically through sandy soil during cycles of wetting and drying, testing four common plastic types at various particle sizes. They found that smaller, more hydrophobic particles migrated deeper, and that frequent wet-dry cycles and the presence of dissolved organic matter accelerated downward movement. The findings suggest that microplastics in agricultural soils could potentially reach groundwater, posing risks to underground water quality.
Experimental and mathematical investigation of cotransport of clay and microplastics in saturated porous media
This study investigated how microplastics travel through underground soil and sand, finding that clay particles in the soil can actually help microplastics move farther by changing how they interact with soil surfaces. The research developed a mathematical model to predict this movement. Understanding how microplastics travel through soil is important because it affects whether they reach and contaminate groundwater used for drinking.
Current understanding of subsurface transport of micro‐ and nanoplastics in soil
This review summarizes current knowledge about how micro- and nanoplastics are transported through soil subsurface environments. Researchers discuss the fundamental mechanisms governing plastic particle movement in soils, including size-dependent filtration, preferential flow through macropores, and interactions with soil colloids. The study highlights significant gaps in understanding how plastics migrate through different soil types and may eventually reach groundwater.
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.
Effects of physicochemical factors on transport and retention of polystyrene microplastics (PS-MPs) in homogeneous and heterogeneous saturated porous media
Researchers studied how polystyrene microplastics move through different types of underground soil and sand formations. They found that smaller sand grains, higher salt concentrations, and the presence of calcium ions all increased microplastic retention, while mixed soil layers created preferential flow paths that allowed some particles to break through faster. The findings help explain how microplastics could potentially contaminate groundwater aquifers.
Rainfall-Induced Transport of Microplastics in Soils Depends on Soil Pore Structure
Scientists studied how tiny plastic particles move through real soil when it rains, finding that the soil's natural pore structure (like tiny tunnels and holes) determines how deep and fast the plastics travel. This research helps us better understand how microplastics spread through farmland soil, which is important because these plastics could eventually end up in our food and water supply. Understanding this movement is a key step toward predicting long-term health risks from microplastic contamination.
Behaviour and transport of microplastics under saturated flow conditions in sediments and soils
Researchers investigated the behavior and transport of microplastics under saturated flow conditions in sediments and soils, examining how physical and chemical properties of microplastic particles influence their mobility through porous geological media. The study addressed knowledge gaps in understanding subsurface microplastic transport relevant to groundwater contamination and the fate of microplastics deposited in terrestrial environments.
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.
Field Lysimeter Experiments for Tracing Microplastics Transport in the Unsaturated Zone
Scientists built outdoor test columns filled with sand and gravel to study how tiny plastic particles move through soil toward groundwater. They used different shapes of plastic pieces (fibers, fragments, and spheres) to trace how these microplastics travel underground under real-world conditions. This research helps us understand how plastic pollution might contaminate drinking water sources, which is important for protecting human health.
Migration of Nanoplastic in Soil: Effects of Polymer Properties and Rainfall Conditions
Researchers investigated the vertical migration of nanoplastics in soil under simulated rainfall, examining how polymer type, concentration, aging, rainfall duration, and pH affect transport behavior. Rainfall promoted nanoplastic entry and retention in upper soil layers, with long-term rainfall driving gradual migration to deeper layers, and nanoplastic mobility found to be inversely related to particle concentration.
Aging Significantly Affects Mobility and Contaminant-Mobilizing Ability of Nanoplastics in Saturated Loamy Sand
Researchers studied how aging from UV light and ozone exposure affects the mobility of nanoplastics in soil and found that aged particles traveled much farther through the soil column than pristine ones. The aged nanoplastics also carried more chemical contaminants with them as they moved. The findings suggest that weathered nanoplastics in the environment may pose greater risks for groundwater contamination than previously assumed.