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20 resultsShowing papers similar to Cotransport of naphthalene with polystyrene nanoplastics (PSNP) in saturated porous media: Effects of PSNP/naphthalene ratio and ionic strength
ClearNanoplastics 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.
Cotransport of nanoplastics (NPs) with fullerene (C60) in saturated sand: Effect of NPs/C60 ratio and seawater salinity
Researchers investigated the cotransport of nanoplastics with fullerene (C60) in seawater-saturated sand columns, finding that nanoplastic-to-C60 ratios and seawater salinity significantly influenced transport behavior and the mobility of these combined contaminants through sediment.
Effects of input concentration, media particle size, and flow rate on fate of polystyrene nanoplastics in saturated porous media
Researchers systematically tested how input concentration, sand grain size, and flow rate control nanoplastic transport through saturated porous media, finding that nanoplastics are highly mobile under most conditions and — crucially — fragment into smaller sub-100 nm particles during long-term release, potentially increasing their environmental persistence and bioavailability.
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 dominate the cotransport of small-scale plastics in seawater-saturated porous media
Researchers found that nanoplastics dominated cotransport behavior when mixed with submicro- and microplastics in seawater-saturated sandy porous media, with particle-particle interactions significantly altering transport distances compared to single-component systems.
Polystyrene Nanoplastics-Enhanced Contaminant Transport: Role of Irreversible Adsorption in Glassy Polymeric Domain
Polystyrene nanoplastics were shown to enhance the transport of co-occurring contaminants through soil by irreversibly adsorbing them onto the glassy polymer domain, facilitating their spread in the environment. The findings indicate that nanoplastics in soil can act as mobile carriers for contaminants that would otherwise remain bound to soil particles, potentially increasing leaching into groundwater.
Co-transport of polystyrene nanoplastics and soil colloids in saturated porous media: influence of pH and ionic strength
Researchers examined the co-transport of polystyrene nanoplastics and soil colloids in saturated porous media, finding that solution pH and ionic strength significantly influenced their combined transport behavior through mechanisms explained by DLVO theory and adsorption tests.
Interplay of compound pollutants with microplastics transported in saturated porous media: Effect of co-existing graphene oxide and tetracycline
Column experiments investigated how co-contaminants (graphene oxide and tetracycline) affect the transport of polystyrene microplastics through saturated porous media, finding that the presence of these compounds altered MP mobility and retention in ways depending on their concentration and soil properties.
Influence of natural organic matters on fate of polystyrene nanoplastics in porous media
Researchers investigated how natural organic matter (NOM) affects the transport of polystyrene nanoplastics through porous media, finding that NOM facilitates nanoplastic movement by increasing energy barriers, while metal ions reduce transport by promoting nanoplastic aggregation.
Investigating transport kinetics of polystyrene nanoplastics in saturated porous media
Researchers investigated how ionic strength, pH, and organic matter influence the transport of polystyrene nanoplastics through saturated porous media using column experiments and DLVO modeling, finding that increasing sodium ion concentrations promote nanoplastic aggregation and reduce mobility in soil and groundwater systems.
Cotransport of thallium(I) with polystyrene plastic particles in water-saturated porous media
Researchers investigated how polystyrene nanoplastics and microplastics affect thallium(I) transport through saturated porous media, finding that nanoplastics accelerated Tl(I) mobility at neutral pH through competitive adsorption, while at acidic pH deposited nanoplastics enhanced Tl(I) retention, with effects dependent on ionic strength and particle size.
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.
Transport of functional group modified polystyrene nanoplastics in binary metal oxide saturated porous media
Researchers found that the surface functional groups of polystyrene nanoplastics significantly influenced their transport behavior through binary metal oxide porous media, with solution chemistry and the specific combination of metal oxides playing key roles in determining nanoplastic mobility in soil environments.
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.
Microplastic types dominate the effects of bismuth oxide semi-conductor nanoparticles on their transport in saturated quartz sand
Column transport experiments found that the type of microplastic (polystyrene vs. polyethylene vs. polypropylene) dominated the effects of bismuth oxide semiconductor nanoparticles on microplastic mobility in saturated quartz sand, with different polymer-nanoparticle combinations showing distinct transport and retention behaviors.
Co-transport of polystyrene microplastics and kaolinite colloids in goethite-coated quartz sand: Joint effects of heteropolymerization and surface charge modification
Column experiments showed that kaolinite colloids enhanced polystyrene microplastic transport through quartz sand but had more complex effects in goethite-coated sand, where the promotion depended strongly on ionic strength conditions due to heteropolymerization and surface charge modification.
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.
Eco-Corona FormationEnhances Cotransport of Nanoplasticsand Organic Contaminants in Porous Media
Researchers investigated how eco-corona formation on polystyrene nanoplastics affects the cotransport of nanoplastics and organic contaminants through porous media, finding that even low masses of adsorbed environmental macromolecules significantly promoted the transport of 4-nonylphenol. Spectroscopic evidence revealed that the contaminant was sequestered between the nanoplastic surface and the eco-corona layer, with cotransport enhanced when the corona formed after contaminant adsorption.
Effects of selected functional groups on nanoplastics transport in saturated media under diethylhexyl phthalate co-contamination conditions
Transport experiments showed that the surface functional groups of nanoplastics strongly influenced their mobility in saturated porous media under phthalate co-contamination conditions, with carboxylated nanoplastics being most mobile and amino-functionalized ones most retained, informing predictions of nanoplastic groundwater transport risk.
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.