We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
[Sorption of Polybrominated Diphenyl Ethers by Virgin and Aged Microplastics].
AI summary Read the abstract
This study examined how environmental aging under UV light changes the ability of polyethylene and polystyrene microplastics to adsorb polybrominated diphenyl ethers (PBDEs), common flame retardant chemicals. Aged microplastics showed altered sorption capacity compared to virgin particles, affecting how these toxic chemicals are transported in aquatic environments.
The sorption kinetics and isothermal sorption of polybrominated diphenyl ethers (PBDEs) by virgin and aged polyethylene (PE) and polystyrene (PS) microplastics with irradiation by ultraviolet light were studied, with 2,2',4,4'-tetrabromodiphenyl ether (BDE-47) as a representative compound. The influence of different environmental factors, including salinity and dissolved organic matter, on its sorption were analyzed. The virgin and aged microplastics were characterized by scanning electron microscopy, x-ray diffraction, and total reflection infrared spectroscopy. The different models of kinetics and sorption isotherm were used to fit the data, and the sorption mechanism of PBDEs by microplastics was analyzed. The results showed that the main sorption modes of virgin and aged PE were surface sorption and external liquid film diffusion. The virgin and aged PS presented the surface sorption. The sorption isotherm was consistent with the Freudlich model, indicating that the sorption of BDE-47 by microplastics was characterized by a multi-phase, multi-layer, and non-uniform sorption process. The equilibrium sorption capacities of BDE-47 on virgin PE, aged PE, virgin PS, and aged PS were 3.72, 3.76, 6.04, and 3.46 ng·g-1, respectively. There was no obvious difference in equilibrium sorption capacity between the aged and virgin PE. However, the equilibrium sorption capacity for the aged PS was decreased by 42.38% compared with that of the virgin PS. The partition of the outer liquid membrane diffusion was the main mechanism affecting sorption of PBDEs by PE. Compared with the virgin PS, the increase in crystallinity and surface oxygen-containing functional groups led to a decrease in the equilibrium sorption capacity of PBDEs on the aged PS. The sorption of BDE-47 was not significantly influenced by salinity. However, dissolved organic matter exerted a negative effect on the sorption of BDE-47.
More Papers Like This
Effects of polymer aging on sorption of 2,2′,4,4′-tetrabromodiphenyl ether by polystyrene microplastics
AI summary Read the abstract
Researchers investigated how different aging processes — seawater soaking, UV irradiation, and their combination — affect the sorption of the brominated flame retardant BDE-47 onto polystyrene microplastics, finding that aging altered sorption capacity and that environmental factors including salinity, pH, and dissolved organic matter further modulated contaminant uptake.
Simultaneous sorption behaviors of UV filters on the virgin and aged micro-high-density polyethylene under environmental conditions.
AI summary Read the abstract
Researchers studied how UV filter chemicals from sunscreens adsorb onto both virgin and aged high-density polyethylene microplastics. They found that aged, weathered microplastics had greater capacity to accumulate UV filter compounds than fresh plastic due to changes in surface chemistry. This suggests that environmental aging of plastics increases their ability to transport chemical contaminants.
Sorption of polybrominated diphenyl ethers by microplastics
AI summary Read the abstract
This study measured sorption of polybrominated diphenyl ethers (PBDEs) onto four types of microplastics under varying temperature, pH, and salinity conditions, finding that sorption capacity differed substantially by polymer type and environmental conditions.
Influence of microplastic (LDPE, PET and uPVC) aging on the sorption of ten organic contaminants in water
AI summary Read the abstract
Researchers tested how environmental aging changes the ability of three types of microplastics (LDPE, PET, and uPVC) to absorb ten different organic contaminants from water, including pharmaceuticals and pesticides. Aged microplastics showed different sorption behavior compared to new plastics, which has important implications for how weathered plastic particles in wastewater or the environment carry and transport toxic chemicals.
Sorption and release process of polybrominated diphenyl ethers (PBDEs) from different composition microplastics in aqueous medium: Solubility parameter approach
AI summary Read the abstract
This study investigated how four common microplastic types (PET, PP, LDPE, and PS) sorb and release flame retardant chemicals called polybrominated diphenyl ethers (PBDEs). The type of plastic polymer significantly affects how much of these toxic chemicals it retains, with implications for how much is released when microplastics are ingested by organisms.
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.