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61,005 resultsShowing papers similar to Effects of ionic strength, cation type and pH on the cotransport of microplastics with PFOA in saturated porous media
ClearCotransport 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.
Cotransport of PFOA with Different Electrically Charged Plastic Particles in Saturated Porous Media
This study investigated how PFOA — a persistent industrial chemical — moves through porous media when combined with plastic particles of different electrical charges. Microplastics can alter the transport of PFOA in soil and groundwater, potentially increasing the spread of this toxic chemical in the environment.
Particle size and co-presence of PFOA alter the transport of microplastics in saturated natural sediment
Researchers investigated how microplastic particle size and the co-presence of the contaminant PFOA affect microplastic transport through natural sediment. The study found that smaller microplastics were more mobile, while PFOA altered transport dynamics, indicating that co-occurring pollutants can influence how microplastics move through environmental substrates.
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.
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.
The co-transport behavior of polyacrylonitrile microplastics and aniline compounds in porous media
Experiments examined how polyacrylonitrile microplastics move through soil alongside other contaminants, finding that co-transport interactions affected both microplastic mobility and the fate of associated pollutants. Understanding these dynamics is important for assessing the spread of microplastics and their cargo in terrestrial environments.
The individual transport, cotransport and immobilization with solar pyrolysis biochar of microplastics and plasticizer in sandy soil
Researchers tracked the individual transport, co-transport, and immobilization of microplastics in porous media, finding that plastic particle behavior differs significantly depending on surface charge and pore structure interactions. The results improve predictions of where microplastics migrate and accumulate in soils and aquifers.
Transport behavior of micro polyethylene particles in saturated quartz sand: Impacts of input concentration and physicochemical factors
Laboratory sand column experiments showed that polyethylene microplastic transport is inhibited by high ionic strength (as it reduces the repulsion between particles and sand grains) but enhanced by fulvic acid (which increases surface charge repulsion). The study provides mechanistic data for predicting how microplastics move through soils under different environmental chemical conditions.
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.
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.
Mechanistic Insights into PFAS Adsorption on Microplastics: Effects of Contaminant Properties and Water Chemistry
Researchers investigated how two widely detected PFAS compounds, PFOS and PFOA, adsorb onto five common types of microplastics in aquatic environments. The study found that contaminant properties and water chemistry significantly influence adsorption behavior, confirming that microplastics can serve as carriers for PFAS transport in waterways.
Microplastics Interactions with PFAS and Co-transport in the Soil
This chapter reviewed the interactions between microplastics and per- and polyfluoroalkyl substances (PFAS) in soil, examining how these two persistent pollutants interact and co-transport through soil profiles. Their combined presence can amplify environmental risks by facilitating PFAS mobility and bioavailability beyond what either contaminant achieves independently.
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.
Cotransport of 6PPD-Q and pristine/aged microplastics in porous media: An insight based on transport forms and mechanisms
Researchers investigated the cotransport of tire-derived chemical 6PPD-Q with pristine and aged microplastics through porous media. The study found that pristine microplastics adsorbed more 6PPD-Q than aged ones due to hydrophobic interactions, and that microplastics can facilitate the transport of this toxic tire rubber compound through soil and groundwater systems.
Co-transport of arsenic and micro/nano-plastics in saturated soil
Column experiments found that 100 nm nanoplastic particles reduced arsenic transport in saturated sand by adsorbing arsenic ions, while 5 micron microplastics enhanced arsenic transport through electrostatic adsorption and pore plugging, demonstrating size-dependent and opposing effects of micro- and nanoplastics on co-contaminant mobility.
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.
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.
Microplastics: A potential booster for PFAS in biosolids
Researchers investigated whether microplastics in biosolids could enhance the mobility and persistence of per- and polyfluoroalkyl substances in soil, finding that microplastics may act as co-carriers that amplify PFAS contamination risks. The study highlights an understudied interaction between two major emerging contaminants.
Transport behavior of microplastics in soil‒water environments and its dependence on soil components
Researchers studied how polystyrene microplastics move through columns packed with different soil components and found that soil organic matter allowed the highest transport efficiency, with over 90 percent of particles passing through. Electrostatic repulsion between the negatively charged microplastics and soil particles was a key factor driving migration. The results suggest that soil composition plays a major role in determining how far microplastics can travel underground toward water sources.
Transport and deposition of microplastic particles in saturated porous media: Co-effects of clay particles and natural organic matter
Researchers performed column experiments to study how clay particles and natural organic matter affect microplastic transport through saturated porous media, finding that both colloids reduced MP mobility through heteroaggregation and that their combined presence produced the greatest reduction in transport.
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.
Effects of Co-Existing Microplastics on Adsorption–Desorption Behavior of Perfluorooctanoic Acid in Soil: Co-Sorption and Mechanism Insight
Researchers investigated how microplastics affect perfluorooctanoic acid (PFOA) adsorption in agricultural soil, finding that irregularly shaped microplastics augmented PFOA adsorption through altered functional groups, with kinetics following a quasi-second-order model and isotherms fitting the Freundlich model, indicating microplastics can modify PFOA environmental behavior in agroecosystems.
Effect 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.
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.