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61,005 resultsShowing papers similar to Surfactant-mediated transport of polyvinyl chloride nanoplastics in porous media: Influence of natural organic matter, natural inorganic ligands and electrolytes
ClearEffect of surfactants on the transport of polyethylene and polypropylene microplastics in porous media
Researchers investigated how surfactants (common chemicals in detergents) affect the movement of polyethylene and polypropylene microplastics through sand and soil. The study found that surfactants can help microplastics travel farther through porous materials, potentially increasing the spread of contamination. Factors like surfactant concentration, water chemistry, and flow rate all influenced how easily microplastics moved, suggesting that everyday chemicals may worsen microplastic pollution in groundwater.
Transport of different microplastics in porous media: Effect of the adhesion of surfactants on microplastics
Researchers investigated how surfactant adhesion on different microplastic surfaces affects their transport through porous media, finding that surfactant interactions vary with microplastic type and significantly alter their mobility in subsurface environments.
Effect of biosurfactants on the transport of polyethylene microplastics in saturated porous media
This study examined how biosurfactants -- surface-active compounds produced by microorganisms -- affect the transport of polyethylene microplastics through saturated porous media. Biosurfactants altered microplastic surface charge and mobility, generally enhancing transport through soil-like media, with implications for assessing the risk of microplastic groundwater contamination following soil remediation treatments.
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.
Influences of input concentration, media particle size, metal cation valence, and ionic concentration on the transport, long-term release, and particle breakage of polyvinyl chloride nanoplastics in saturated porous media
Researchers investigated the transport and long-term release of polyvinyl chloride nanoplastics through saturated porous media, finding that particle concentration, sediment grain size, ionic strength, and cation valence all significantly affected nanoplastic mobility and retention relevant to groundwater contamination.
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 of polystyrene nanoplastics in porous media: Combined effects of two co-existing substances
Researchers studied how cationic and anionic surfactants interact with natural organic matter (humic acid and sodium alginate) to control polystyrene nanoplastic transport through porous media, finding that the dominant mobility mechanism switched from electrostatic (with cationic surfactants) to hydrophobic (with anionic surfactants), with organic matter amplifying each surfactant's effect.
Nanoplastics as carriers of organic pollutants in seawater-saturated porous media: a quantitative comparison of transport pathways
Researchers quantitatively compared transport pathways of non-polar organic pollutants carried by nanoplastics through seawater-saturated porous media, demonstrating that the carrier effect of nanoplastics is the primary mechanism inhibiting pollutant migration and enabling their co-transport in coastal and marine subsurface environments.
Fate and transport of nanoplastics in complex natural aquifer media: Effect of particle size and surface functionalization
Researchers used batch and column experiments in a natural sandy aquifer to show that nanoplastic transport is governed primarily by organic matter coatings rather than particle size or surface chemistry alone, with suspended organic matter increasing mobility while dissolved organic matter reduces it — findings that improve predictions of nanoplastic contamination in agricultural groundwater systems.
The 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.
Transport of polyethylene and polypropylene microplastics under the action of agricultural chemicals: Role of pesticide adjuvants and neonicotinoid active ingredients
Column experiments showed that pesticide adjuvants (surfactants) and neonicotinoid active ingredients both influenced the transport of polyethylene and polypropylene microplastics through saturated porous media, with surfactants generally enhancing mobility.
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.
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.
Secondary nanoplastic transport in sand and in soil
Scientists studied how tiny plastic particles called nanoplastics move through sand and soil after being broken down in the environment for many years. They found that different types of plastic particles move differently underground - some get stuck while others travel further - depending on the plastic type and soil conditions. This research helps us better understand how these microscopic plastic pieces might spread through groundwater and potentially reach drinking water sources, which could affect human health.
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.
Key factors controlling transport of micro- and nanoplastic in porous media and its effect on coexisting pollutants
Researchers reviewed the key factors that control how micro- and nanoplastics move through porous media such as soil and sediment, and how they affect the transport of co-occurring pollutants. They found that microplastics can either facilitate or inhibit the movement of other contaminants depending on particle properties and environmental conditions. The review emphasizes the need to better understand these co-transport dynamics for predicting the environmental fate of plastic pollution.
Why nanoplastics do not enhance the transport of contaminants in the critical zone
Researchers investigated whether nanoplastics enhance the co-transport of emerging contaminants through agricultural soils in the critical zone, examining the correlation between transport and desorption timescales to challenge the assumption that high surface area and sorption potential of nanoplastics substantially increases contaminant mobility toward groundwater.
Cotransport of different electrically charged microplastics with PFOA in saturated porous media
Researchers examined how differently charged microplastics co-transport with PFOA through saturated porous media, finding that surface charge significantly influences both MP mobility and PFOA transport behavior, with implications for groundwater contamination.
Eco-Corona Dictates Mobility of Nanoplastics in Saturated Porous Media: The Critical Role of Preferential Binding of Macromolecules
The eco-corona that forms on nanoplastic surfaces through interaction with humic substances and extracellular polymeric substances (EPS) was found to critically determine nanoplastic mobility through saturated porous media. Humic-coated nanoplastics showed greater mobility than EPS-coated ones, suggesting natural organic matter composition governs nanoplastic transport in groundwater systems.
Nanoplastic in aqueous environments: The role of chemo-electric properties for nanoplastic-mineral interaction
Researchers studied how nanoplastics — plastic particles smaller than 1 micrometer — stick to common soil minerals underground, finding that simple electrical repulsion is less important than chemical bonding, metal ion bridging, and hydrogen bonds. Understanding these interactions is key to predicting how nanoplastics move through soil and contaminate groundwater.
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.
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.
Facilitated transport of microplastics and nonylphenol in porous media with variations in physicochemical heterogeneity
Researchers found that when microplastics and the endocrine disruptor nonylphenol coexist, their mobility through soil is enhanced due to mutual association and competition for retention sites, increasing potential groundwater contamination risk.
Transport of polypropylene, polyvinyl chloride, polyethylene terephthalate and polymethyl methacrylate microplastics in porous media under gradient ionic strength
Researchers used column experiments to study how four types of microplastics — polypropylene, PVC, PET, and PMMA — move through soil-like porous media under different salt concentrations. They found that increasing salinity reduces microplastic mobility by causing particles to stick to sand surfaces, which has implications for predicting how far microplastics can travel through soils to reach groundwater.