We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Papers
20 resultsShowing papers similar to Interaction of Dissolved Organic Matters and Microplastics Regulates the Transport of Microplastics in Saturated Porous Media
ClearTransport 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.
Insight into interactions of polystyrene microplastics with different types and compositions of dissolved organic matter
Researchers investigated how polystyrene microplastics interact with different types of dissolved organic matter, finding that fulvic acid and humic acid adsorb onto microplastics through distinct mechanisms, which influences microplastic transport and transformation in the environment.
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.
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.
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.
Effects of solution chemistry and humic acid on the transport of polystyrene microplastics in manganese oxides coated sand
Column experiments showed that polystyrene microplastics had significantly lower mobility through manganese oxide-coated sand than bare sand due to electrostatic attraction and surface roughness, with humic acid increasing transport and co-transport with cadmium reducing it.
Effect of low-molecular-weight organic acids on the transport of polystyrene nanoplastics in saturated porous media
Researchers studied how low-molecular-weight organic acids (common in soil and groundwater) affect the movement of polystyrene nanoplastics through saturated porous media, finding that low concentrations promote transport while high concentrations increase particle deposition, with the effect scaling with the number of functional groups on the organic acid.
Transport and deposition behaviors of microplastics in porous media: Co-impacts of N fertilizers and humic acid
Inorganic and organic nitrogen fertilizers and humic acid were found to influence the transport and deposition of microplastics in porous media, with humic acid promoting microplastic mobility while ammonium chloride and urea had different effects on particle retention in soil columns.
Co-impacts of cation type and humic acid on migration of polystyrene microplastics in saturated porous media
Researchers investigated how different cation types and humic acid concentrations affect the movement of polystyrene microplastics through saturated soil. The study found that aging accelerated microplastic migration under all conditions, while calcium ions and humic acid had complex interactive effects on microplastic transport and retention in porous media.
Transport characteristics of fragmental polyethylene glycol terephthalate (PET) microplastics in porous media under various chemical conditions
Researchers performed column experiments to characterize the transport of fragmental PET microplastics through porous media under varying electrolyte concentrations, pH levels, and humic acid content, finding that PET fragments had generally low mobility that was modestly enhanced under high pH and humic acid conditions.
Effects of solution chemistry and humic acid on transport and deposition of aged microplastics in unsaturated porous media
Researchers used column experiments to investigate how aging, ionic strength, cation type, and humic acid affect the transport of microplastics through unsaturated sandy soil. Aged microplastics with more negative surface charge transported more readily than pristine particles, and humic acid and calcium ions both affected transport in ways dependent on their concentrations.
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.
Combined effects of photoaging and natural organic matter on the colloidal stability of nanoplastics in aquatic environments
Researchers found that photoaging of polystyrene nanoplastics alters how natural organic matter interacts with their surfaces — reducing humic acid adsorption while increasing protein adsorption — with downstream effects on the nanoplastics' stability and transport in aquatic environments.
Influence of environmental and biological macromolecules on aggregation kinetics of nanoplastics in aquatic systems
Researchers studied how natural macromolecules like humic acid, alginate, and proteins influence the clumping behavior of polystyrene nanoplastics in water. They found that these macromolecules generally stabilized nanoplastics in sodium chloride solutions but caused them to aggregate in calcium chloride solutions, with effects varying by pH. The findings suggest that the environmental fate and transport of nanoplastics in natural waters depends heavily on the surrounding organic molecules and water chemistry.
Adsorption of dissolved organic matter (DOM) on polystyrene microplastics in aquatic environments: Kinetic, isotherm and site energy distribution analysis
Polystyrene microplastics adsorbed both humic and fulvic acids from water via hydrophobic and pi-pi interactions, with humic acid showing stronger binding due to higher molecular energy sites. The results indicate that dissolved organic matter in natural waters will coat microplastic surfaces and alter their environmental behavior.
Mechanistic insights into the co-transport of microplastic degradation products in saturated porous media: The key role of microplastics-derived DOM
Researchers investigated the co-transport of microplastic-derived dissolved organic matter (MP-DOM) and aged microplastics (AMPs) through saturated porous media under a range of environmentally relevant conditions. They found that as the degree of aging increased, changes in physicochemical characteristics of both AMPs and MP-DOM altered their transport behaviour, with MP-DOM playing a key role in the co-transport dynamics.
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.
Impact of iron/aluminum (hydr)oxide and clay minerals on heteroaggregation and transport of nanoplastics in aquatic environment
Researchers examined how polystyrene nanoplastics interact with nine different minerals in aquatic environments, finding that positively charged iron and aluminum (hydr)oxide minerals readily form aggregates with nanoplastics through electrostatic and hydrophobic forces, while humic acid and shifting pH significantly suppress this aggregation.
Stabilization of Fragmental Polystyrene Nanoplastic by Natural Organic Matter: Insight into Mechanisms
This study investigated how natural organic matter stabilizes fragmental polystyrene nanoplastics in aqueous environments, finding that humic and fulvic acid coatings reduce aggregation and enhance colloidal stability, affecting nanoplastic transport and bioavailability.
Effects of Low-Molecular-Weight Organic Acids on the Transport of Polystyrene Nanoplastics in Saturated Goethite-Coated Sand Columns
This study examined how low-molecular-weight organic acids — common root exudates in soil — affect the transport of polystyrene nanoplastics through porous media. Organic acids altered nanoplastic surface charge and aggregation state, significantly changing how far particles could migrate through soil.