We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Papers
61,005 resultsShowing papers similar to Cotransport of nanoplastics with nZnO in saturated porous media: From brackish water to seawater
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.
The selective occurrence of ripening effect makes the cotransport of various sized nanoplastics in seawater-saturated and freshwater-saturated porous media significantly different
Researchers investigated how nanoplastics of different sizes co-transport through freshwater versus seawater-saturated porous media, finding that in seawater a "ripening" effect — where deposited particles make surfaces stickier — causes nanoplastics to mutually enhance each other's retention, producing fundamentally different fate patterns than in freshwater.
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.
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.
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.
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.
Vertical transport and retention behavior of polystyrene nanoplastics in simulated hyporheic zone
Researchers investigated polystyrene nanoplastic transport through quartz sand columns under varying flow rates, orientations, water saturation, salinity, and temperature, finding that high salinity was the most powerful driver of retention. Increasing salinity from 0 to 35 PSU caused the penetration rate of nanoplastics to drop from 100% to zero by compressing the electrical double layer and facilitating aggregation.
Different inhibitory mechanisms of flexible and rigid clay minerals on the transport of microplastics in marine porous media
Experiments showed that flexible montmorillonite clay formed tight coatings around microplastics that retarded their transport through marine porous media, while rigid kaolinite formed weaker attachments that were more easily disrupted by high salinity.
Role of surface functionalities of nanoplastics on their transport in seawater-saturated sea sand
Researchers examined the transport of surface-functionalized nanoplastics through seawater-saturated sea sand, finding that carboxyl-functionalized particles had the highest mobility while positively charged amino-functionalized particles showed lowest recovery due to stronger attraction to sand surfaces and homoaggregation.
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 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.
Enhanced sinks of polystyrene nanoplastics (PSNPs) in marine sediment compared to freshwater sediment: Influencing factors and mechanisms
Researchers compared nanoplastic transport through freshwater and marine sediment columns, finding that nanoplastics penetrate far more readily in freshwater (up to 90% breakthrough) than in marine sediments (under 9%), primarily because higher salinity causes aggregation and marine sediments have finer grain sizes that trap particles more effectively.
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.
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.
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 ionic strength, cation type and pH on the cotransport of microplastics with PFOA in saturated porous media
Researchers investigated how microplastics and the chemical contaminant PFOA interact when traveling together through saturated soil. The study found that microplastics generally inhibited PFOA transport through adsorption, while PFOA accelerated microplastic movement through electrostatic effects, demonstrating that co-contamination can alter the environmental fate of both pollutants.
Ligand-selective complexation of natural organic matter with Mg2+ modulates nanoplastic transport in seawater-saturated porous media
Researchers showed that the type of natural organic matter coating on nanoplastics — not just its presence — controls whether particles clump and settle or stay mobile in seawater, with tannic acid forming tight magnesium bridges that aggregate particles while humic and fulvic acids maintain colloidal stability and enhance transport.
Sensitivity of the Transport of Plastic Nanoparticles to Typical Phosphates Associated with Ionic Strength and Solution pH
This study investigated how phosphate ions in soil pore water influence the transport of plastic nanoparticles through porous media under varying pH and ionic strength conditions. Phosphate affected nanoparticle surface charge and aggregation behavior, altering how far particles traveled. The findings are relevant to understanding how plastic nanoparticles move through soils and groundwater systems.
Cotransport and deposition of colloidal polystyrene microplastic particles and tetracycline in porous media: The impact of ionic strength and cationic types
Researchers investigated the cotransport of polystyrene microplastic particles and tetracycline through saturated porous media under varying ionic strength and cation type conditions, finding that the presence of tetracycline slightly reduced microplastic mobility in potassium chloride solutions while calcium ions strongly promoted both microplastic and antibiotic deposition. The study highlights how antibiotic co-occurrence and water chemistry interact to influence the transport and fate of microplastics in groundwater systems.
Microplastic and heavy metal interactions (adsorption and desorption) at different salinities
Researchers examined adsorption and desorption of heavy metals (Pb, Cu, Zn) onto polypropylene, polyethylene, and other microplastic types at varying concentrations and salinities, finding PP particles absorbed the most metal but also released it most slowly compared to other polymers.
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.
Effects of ionic strength and particle size on transport of microplastic and humic acid in porous media
Column transport experiments tested how ionic strength and humic acid concentration influence the co-transport of colloidal polystyrene microplastics through saturated porous media. Humic acid increased microplastic mobility at low concentrations but the effect was reversed at high ionic strength due to charge screening, demonstrating complex interactions between environmental matrix chemistry and microplastic transport.
Transport of nanoplastics in saturated iron oxide-coated gravel: Effects of flow velocity, ionic strength and surface property of nanoplastics
Researchers investigated nanoplastic transport through saturated iron oxide-coated gravel by varying flow velocity, ionic strength, and surface properties, finding that higher flow rates promoted nanoplastic transport, while ionic strength had opposing effects on negatively and positively charged particles depending on their surface chemistry.
Investigation for Synergies of Ionic Strength and Flow Velocity on Colloidal-Sized Microplastic Transport and Deposition in Porous Media Using the Colloidal–AFM Probe
Experiments showed that both water flow speed and salt concentration work together to control how microplastic particles stick to and move through sand and soil. Understanding these combined effects is important for predicting how microplastics travel through groundwater and contaminate water supplies.