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20 resultsShowing papers similar to Aggregation dynamics of nanoplastics: insights through real world waste
ClearPrediction of nanoplastics aggregation in wastewaters
Researchers modeled how nanoplastic particles from degraded plastic waste aggregate in wastewater under different conditions. Understanding aggregation behavior is key to predicting how nanoplastics move through water treatment systems and ultimately whether they reach drinking water sources.
The environmental fate of nanoplastics: What we know and what we need to know about aggregation
Researchers systematically analyzed experimental studies on nanoplastic aggregation behavior, evaluating the environmental relevance of 377 solution chemistries and 163 particle models. The study found that commonly used polymer latex spheres do not accurately represent real-world nanoplastics, and suggests that incidentally produced nanoplastics may be more sensitive to heteroaggregation than previously expected.
Mechanistic understanding of the aggregation kinetics of nanoplastics in marine environments: Comparing synthetic and natural water matrices
Researchers investigated aggregation kinetics of polystyrene nanoplastics in marine environments, finding that organic matter type and salt concentration strongly influenced particle stability, with nanoplastics in natural seawater aggregating differently than in synthetic matrices.
Aggregation kinetics of fragmental PET nanoplastics in aqueous environment: Complex roles of electrolytes, pH and humic acid
Researchers investigated the aggregation kinetics of fragmental PET nanoplastics under varying electrolyte concentrations, pH, and humic acid conditions, finding that aggregation increased with higher electrolyte concentrations and lower pH. Divalent cations caused stronger aggregation than monovalent cations at equal concentrations, and humic acid significantly inhibited aggregation, highlighting how natural water chemistry governs nanoplastic fate.
Effects of size and surface charge on the sedimentation of nanoplastics in freshwater
Researchers investigated how size and surface charge of polystyrene nanoplastics affect their sedimentation behavior in freshwater, finding that both properties significantly influence aggregation dynamics and settling rates, with implications for predicting nanoplastic fate in aquatic environments.
Assessing the size transformation of nanoplastics in natural water matrices
Researchers studied how nanoplastics change in size when placed in different types of natural water, including freshwater and seawater. They found that factors like pH, salt content, and dissolved organic matter significantly influenced whether the particles clumped together or remained small. The findings are important for understanding how nanoplastics behave in real-world aquatic environments and assessing their potential risks.
Structural Compactness Governs the Environmental Fate of Polystyrene Nanoplastics: Reaggregation Mechanisms in Laboratory-Scale Aquatic Systems.
Scientists studied how tiny plastic particles from polystyrene (smaller than the width of a human hair) behave in water under different conditions like saltiness and water movement. They found that these plastic particles can break apart and stick back together, staying suspended in water for long periods and traveling far distances through rivers and oceans. This matters because it means these microscopic plastics could spread widely through water systems and potentially end up in our drinking water and food chain.
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.
Nanoplastics Aggregation in Environment: Analytical Methods and Environmental Implications
This review examines how nanoplastics aggregate in the environment—clumping together or attaching to other particles—and how this affects their analysis and ecological impact. Aggregation changes how nanoplastics move through water and accumulate in organisms, complicating risk assessment for these extremely small plastic particles.
Latent Polyester Nanoplastics in Water Environments
Researchers developed a new method to measure polyester nanoplastics in water and found that actual concentrations are much higher than previously reported. Using dialysis and ultrasonication to break up aggregated particles, they detected average PET nanoplastic concentrations of 7.02 micrograms per liter in freshwater lakes, revealing that most nanoplastics in natural water exist as aggregates rather than individual dispersed particles.
The difference of aggregation mechanism between microplastics and nanoplastics: Role of Brownian motion and structural layer force
The aggregation mechanisms of 100-nm and 1-micrometer polystyrene particles were compared under different water chemistry conditions to understand how microplastics and nanoplastics behave differently in aquatic environments. The study found distinct aggregation pathways between the two size classes, driven by differences in electrostatic forces and surface properties.
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.
Molecular modeling to elucidate the dynamic interaction process and aggregation mechanism between natural organic matters and nanoplastics
Researchers used molecular modeling to understand how nanoplastics interact with natural organic matter found in water environments. They found that the chemical properties of both the plastic surface and the organic molecules determined whether they clumped together or remained dispersed. The study provides new molecular-level insights into how nanoplastics behave and spread in natural water systems, which is important for predicting their environmental fate.
Nanoplastics display strong stability in aqueous environments: Insights from aggregation behaviour and theoretical calculations
Nanoplastics released into aquatic environments were found to be highly stable and resist aggregation and settling under many conditions, meaning they can persist and disperse widely rather than quickly sinking. This environmental stability makes nanoplastics particularly concerning as long-lived and mobile contaminants in water systems.
Aggregation behavior of polystyrene nanoplastics: Role of surface functional groups and protein and electrolyte variation
Researchers studied how different surface coatings on polystyrene nanoplastics affect their tendency to clump together in water containing proteins and salts. They found that the type of surface functional group significantly changed how the particles aggregated, with proteins and electrolytes playing important roles in the process. The study helps explain how nanoplastics behave and transform as they move through natural water systems.
Aggregation Kinetics and Stability of Biodegradable Nanoplastics: Effects of Weathering and Proteins
Researchers studied how weathering and proteins affect the aggregation and stability of biodegradable nanoplastics in water. Biodegradable plastics can still generate persistent nanoscale particles that behave differently depending on environmental conditions, complicating assumptions about their safety compared to conventional plastics.
Aggregation kinetics of microplastics in aquatic environment: Complex roles of electrolytes, pH, and natural organic matter
Researchers found that the aggregation behavior of polystyrene microplastics in water was strongly influenced by pH, ionic strength, and the presence of natural organic matter, with divalent cations like calcium and magnesium promoting aggregation. Understanding aggregation kinetics is critical for predicting how microplastics partition between suspended and settled states in natural water bodies.
Nanoplastics in the oceans: Theory, experimental evidence and real world
Researchers critically review over 200 studies on nanoplastic pollution — focusing predominantly on polystyrene — synthesizing knowledge on how nanoplastics form from polymer degradation, accumulate in seawater, and affect organisms in controlled conditions, while identifying key methodological standards needed for reliable ecotoxicological assessments.
Aggregation and Deposition Kinetics of Polystyrene Microplastics and Nanoplastics in Aquatic Environment
Researchers measured aggregation and deposition kinetics of 50 nm and 500 nm polystyrene particles under varying ionic strength and pH conditions, finding that both particle sizes aggregated rapidly at elevated salt concentrations and that the smaller nanoplastics were more mobile in column experiments.
Effects of temperature and particle concentration on aggregation of nanoplastics in freshwater and seawater
The aggregation behavior of nanoplastics in freshwater and seawater was studied at different temperatures and particle concentrations, finding that salinity, particle concentration, and temperature all significantly influenced aggregation rates with implications for nanoplastic fate in aquatic environments.