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61,005 resultsShowing papers similar to Comparison of microplastics heteroaggregation with MoS2 and graphene oxide nanosheets: Dependence on the configuration and impacts on aquatic transport
ClearEffect of the Surface Hydrophobicity–Morphology–Functionality of Nanoplastics on Their Homoaggregation in Seawater
Researchers found that nanoplastic surface hydrophobicity, morphology, and functional chemistry strongly govern homoaggregation behavior in aquatic environments, with more hydrophobic and functionalized particles forming larger, faster-settling aggregates that alter their environmental fate and bioavailability.
Recent developments in microplastic contaminated water treatment: Progress and prospects of carbon-based two-dimensional materials for membranes separation
This review assessed recent advances in microplastic removal from contaminated water, covering physical, chemical, and biological treatment methods and their effectiveness across different plastic sizes, polymer types, and water chemistries. The authors identify membrane filtration and coagulation as among the most promising scalable approaches.
Sedimentation behavior of aggregated microplastics: Influence of particle size and water constituents in environmental waters
Laboratory experiments investigated how aggregation of microplastics with sediments and organic matter affects their sinking rates in water, finding that aggregate composition strongly influences settling velocity. These findings improve models predicting whether microplastics sink to the seafloor or remain suspended in the water column.
Microplastics and Nanoplastics in Aquatic Environments: Aggregation, Deposition, and Enhanced Contaminant Transport
This review examined the aggregation, deposition, and transport of microplastics and nanoplastics in aquatic environments, synthesizing how particle properties and water chemistry govern their fate and mobility in rivers, lakes, and oceans.
Characteristics and Sinking Behavior of Typical Microplastics Including the Potential Effect of Biofouling: Implications for Remediation
Researchers characterized how microplastics of different shapes sink through water, finding that shape is a critical factor, with films behaving very differently from spheres and fibers. The study also examines how biofouling on floating plastics can cause them to sink, with implications for designing filtration and remediation systems.
Size effect of graphene oxide from quantum dot to nanoflake on the mobility of nanoplastics in seawater-saturated sand
Researchers investigated how different sizes of graphene oxide, from quantum dots to nanoflakes, affect the movement of nanoplastics through seawater-saturated sand. The study found that the smallest graphene oxide particles promoted nanoplastic mobility, while the largest ones completely blocked it by forming large aggregates that clung to sand surfaces, and these size effects were also dependent on water salinity levels.
Influence of shape on heteroaggregation of model microplastics: a simulation study
Researchers used molecular dynamics simulations to show that microplastic particle shape strongly influences how they aggregate with organic matter, finding that smooth spherical particles form compact aggregates with weak bonds while sharp-edged shapes form fractal structures with stronger connections that are more resistant to shear flow.
New Insights into the Formation of Aggregates of Bidisperse Nano- and Microplastics in Water Based on the Analysis of In Situ Microscopy and Molecular Simulation
Researchers combined microscopy and molecular simulations to study how nano- and microplastic particles of different sizes clump together in water. They found that mixing particle sizes delays the onset of rapid aggregation but does not change the overall growth pattern. The findings help explain how plastic particles behave in salty water like oceans and wastewater, which is important for designing effective removal strategies.
Microplastic-oil-dispersant agglomerates in the marine environment: Formation mechanism and impact on oil dispersion
Researchers investigated how microplastics form agglomerates with spilled oil and dispersants in marine environments, identifying two distinct agglomerate types and showing that these formations can significantly affect oil dispersion effectiveness during spill responses.
Integrated effects of polymer type, size and shape on the sinking dynamics of biofouled microplastics
Researchers investigated how polymer type, size, and shape interact with biofouling to influence microplastic sinking dynamics, finding that biofilm growth altered buoyancy and settling rates in ways that depend on the physical characteristics of each particle.
Sinking rates of microplastics and potential implications of their alteration by physical, biological, and chemical factors
Researchers conducted sinking experiments with diverse microplastic particles and found that sinking velocity depends not only on density and size but also on particle shape, and that biofouling and weathering can substantially alter sinking rates with implications for how microplastics distribute through the water column.
How do microplastics interact with other particles in aquatic environments?
This study investigates how microplastics interact with other particles in aquatic environments, examining the physical and chemical mechanisms governing aggregation, adsorption, and co-transport of microplastics with suspended particles. The research is hosted on the Experiment platform for open scientific discovery funding and sharing.
Heteroaggregation, disaggregation, and migration of nanoplastics with nanosized activated carbon in aquatic environments: Effects of particle property, water chemistry, and hydrodynamic condition
Researchers studied how nanosized activated carbon interacts with positively and negatively charged nanoplastics under various water chemistry and hydrodynamic conditions. They found that aggregation behavior depended strongly on particle charge, pH, and the presence of natural organic matter like humic acid. The study suggests that interactions with engineered nanomaterials in aquatic environments can significantly influence how far nanoplastics travel, with implications for predicting their environmental fate.
A Critical Review on 2D Nanomaterials for Microplastic Remediation From Water: Current Progress and Challenges
This review summarizes how two-dimensional nanomaterials such as MXenes, graphene-based materials, and transition metal dichalcogenides can be used to remove microplastics from water. Researchers found these materials show significant promise for microplastic remediation through adsorption, photocatalysis, and membrane filtration due to their unique structural properties and chemical stability. The study outlines remaining challenges for scaling these technologies to industrial applications.
Heteroaggregation of nanoplastic particles in the presence of inorganic colloids and natural organic matter
Nanoplastics were found to heteroaggregate extensively with inorganic colloids and natural organic matter in both freshwater and marine conditions, altering their size, surface charge, and settling behavior compared to pristine particles. The study demonstrates that nanoplastic behavior in natural waters is dominated by interactions with other environmental constituents rather than the intrinsic properties of the plastic alone.
Aggregation Behavior of Particulate Plastics and Its Implications
This chapter reviews how microplastics aggregate with each other and with natural particles like sediment and algae in water, affecting their transport, fate, and biological availability. Heteroaggregation with natural colloids is more common than microplastic-to-microplastic clumping, which has important implications for how microplastics move through aquatic environments.
Transport of Microplastic and Dispersed Oil Co-contaminants in the Marine Environment
Researchers investigated the transport behavior of microplastic-oil-dispersant agglomerates in simulated ocean systems, finding that over 90% of heavy oil agglomerates stayed at the surface while light oil agglomerates sank, influenced by salinity and mineral concentrations.
Agglomeration of nano- and microplastic particles in seawater by autochthonous and de novo-produced sources of exopolymeric substances
Nano- and microplastic particles in seawater were found to readily form agglomerates with naturally produced exopolymeric substances, altering their surface properties, size, and sinking behavior compared to pristine particles. The study demonstrates that natural organic matter in seawater fundamentally changes how plastic particles behave and interact with marine organisms and sediments.
AQuantitative Relationshipbetween Settling and Wettabilityfor Weathered Microplastics in Aquatic Systems
Researchers quantified the relationship between surface wettability and settling velocity for weathered microplastics in aquatic systems, demonstrating that wettability-driven microscale changes at the particle-water interface modify drag forces and thus govern the transport and fate of submillimeter plastic particles.
Transport of polystyrene microplastics in bare and iron oxide-coated quartz sand: Effects of ionic strength, humic acid, and co-existing graphene oxide
Researchers investigated how graphene oxide nanoparticles and humic acid influence the transport of polystyrene microplastics through sand columns, comparing bare quartz sand with iron oxide-coated sand. They found that iron oxide-coated sand strongly retained microplastics regardless of other factors, while graphene oxide significantly promoted microplastic transport by increasing surface charge and creating steric barriers. The study suggests that the co-presence of nanomaterials and organic matter in the environment can significantly alter how microplastics move through soil and groundwater systems.
Microplastic and oil pollution in oceans: Interactions and environmental impacts
This review examined how microplastics and oil interact when they co-occur in the ocean, finding that they combine to form microplastic-oil agglomerates that reduce oil dispersion efficacy, alter biodegradation rates, and cause greater harm to plankton and higher trophic species than either contaminant alone. The agglomerates also slow vertical carbon transport, with potential implications for ocean carbon cycling.
Nanoparticle Heteroagglomeration with Natural and Synthetic Suspended Particulate Matter
Researchers reviewed nanoparticle heteroagglomeration with natural and synthetic suspended particulate matter in aquatic environments, examining how the kinetics of agglomeration between nanoplastics, manufactured nanomaterials, and SPM affect nanoparticle transport and risk assessment in river systems.
Interaction, Adhesion and Aggregation of Microplastic/Nanoplastic Particles: Effects of Plastic Polymer Type
This review examines how polymer type, particle size, shape, pH, ionic strength, and salt composition influence the interaction, adhesion, and aggregation behavior of microplastics and nanoplastics in aquatic and soil environments. The paper synthesizes findings on homoaggregation and heteroaggregation with natural and engineered nanoparticles, highlighting how aggregation affects particle transport and environmental fate.
Sediment organic carbon dominates the heteroaggregation of suspended sediment and nanoplastics in natural and surfactant-polluted aquatic environments
Researchers found that sediment organic carbon plays a dominant role in the heteroaggregation of nanoplastics with suspended sediment particles, with surfactant pollution altering aggregation dynamics and influencing the environmental transport and fate of nanoplastics in aquatic systems.