We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Surface ChargeRegulation of Nanoplastics in AquaticEnvironments
AI summary Read the abstract
This study developed a coupled mathematical model integrating the Poisson-Nernst-Planck equation with diffusive transport to predict how environmental factors regulate nanoplastic surface charge in water. The model identified pH and ionic composition as dominant controllers of surface charge, with implications for nanoplastic aggregation and ecotoxicological behavior.
Nanoplastics (NPs) pose significant environmental and health hazards, with their aquatic transport and aggregation being critically governed by surface charge properties. However, the factors controlling NPs’ surface charge remain incompletely understood. This study develops a coupled model that integrates the Poisson–Nernst–Planck (PNP) equation (encompassing electrostatic field and diffusive transport) with a surface adsorption reaction model. Employing polystyrene NPs adsorbing sulfate ions as a model system, we systematically analyze the effects of particle size, shape, and ionic exclusion on surface charge across varying pH. Interparticle interaction energies are quantified via Derjaguin–Landau–Verwey–Overbeek (DLVO) theory. This work provides quantitative insights into the mechanisms governing the variability of NPs’ surface charge. The findings offer a theoretical basis for developing strategies to control the aggregation and removal of NPs in aqueous environments.
More Papers Like This
Surface Charge Regulation of Nanoplastics in Aquatic Environments
AI summary Read the abstract
Researchers developed a coupled mathematical model integrating electrostatic and diffusion equations to predict how environmental factors regulate the surface charge of nanoplastics in aquatic systems. The model revealed that pH, ionic strength, and dissolved organic matter all critically influence nanoplastic surface charge, governing their aggregation and transport behavior.
Nanoplastic transport in aqueous environments: The role of chemo-electric properties and hydrodynamic forces for nanoplastic-mineral interaction.
AI summary Read the abstract
This study examined how the physicochemical properties of nanoplastics and hydrodynamic forces govern their interaction with mineral surfaces in aquatic environments. The findings characterize transport and fate behavior of nanoplastics as they move through different environmental compartments.
Nanoplastic transport in aqueous environments: The role of chemo-electric properties and hydrodynamic forces for nanoplastic-mineral interaction.
AI summary Read the abstract
This study examined the role of chemo-electric properties and hydrodynamic forces in controlling nanoplastic interactions with mineral surfaces in aquatic environments. The findings characterize transport mechanisms relevant to understanding nanoplastic fate in rivers and groundwater systems.
Heteroaggregation kinetics of oppositely charged nanoplastics in aquatic environments: Effects of particle ratio, solution chemistry, and interaction sequence
AI summary Read the abstract
Researchers investigated how oppositely charged nanoplastics clump together (heteroaggregation) in water under varying pH, salt, and natural organic matter conditions, finding that electrostatic attraction drives aggregation but humic acid retards it more than sodium alginate, while the sequence and timing of chemical interactions also significantly alters the final aggregation behavior.
Heteroaggregation of nanoplastic particles in the presence of inorganic colloids and natural organic matter
AI summary Read the abstract
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.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.