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Papers
20 resultsShowing papers similar to The sorption behavior of triclosan on microplastics: aging effects and mechanisms
ClearEffects of biofilm formation on triclosan adsorption by UV-aged and pristine polystyrene microplastics in aquatic environments
Researchers investigated how biofilm formation on UV-aged versus pristine polystyrene microplastics affected triclosan adsorption, finding that biofilm-colonized aged microplastics had altered surface properties that changed triclosan uptake compared to unaged particles.
Behavior and mechanisms of ciprofloxacin adsorption on aged polylactic acid and polyethlene microplastics
Researchers investigated how aging affects the adsorption of the antibiotic ciprofloxacin on polylactic acid and polyethylene microplastics, finding that aged plastics showed significantly enhanced adsorption capacity due to physicochemical surface changes.
Adsorption and desorption of parachlormetaxylenol by aged microplastics and molecular mechanism
This study examined adsorption and desorption of the antimicrobial compound parachlormetaxylenol on aged microplastics, finding that aging increases adsorption capacity and that desorption behavior depends on plastic type and environmental conditions.
Adsorption of Macrolide Antibiotics by Aged Microplastics of Different Sizes: Mechanisms and Effects
Researchers investigated how aging affects the ability of polystyrene microplastics to adsorb macrolide antibiotics in water, testing two particle sizes under simulated natural aging conditions. They found that aging increased surface roughness and oxygen-containing functional groups on the microplastics, significantly enhancing their ability to adsorb azithromycin, clarithromycin, and erythromycin. The findings suggest that weathered microplastics in the environment may carry higher loads of antibiotic contaminants than pristine particles.
Adsorption behavior of triclosan on polystyrene nanoplastics: The roles of particle size, surface functionalization, and environmental factors
Researchers examined how triclosan, an antimicrobial compound common in personal care products, adsorbs onto polystyrene nanoplastics of different sizes and surface chemistries, finding that smaller particles and functionalized surfaces (with carboxyl or amine groups) bind more triclosan, with pH and salinity further modulating uptake — suggesting nanoplastics can serve as mobile carriers for this contaminant.
Adsorption performance and mechanisms of ciprofloxacin onto microplastics: effects of different textures and aging degrees.
Researchers examined ciprofloxacin adsorption onto pristine and UV-aged polypropylene, polyvinyl chloride, and polyamide 6 microplastics, finding that UV aging increased oxygen-containing surface functional groups and raised maximum adsorption capacity by up to 40%, with density functional theory calculations identifying hydrogen bonding, electrostatic attraction, and π interactions as primary binding mechanisms.
Adsorption-desorption behaviors of ciprofloxacin onto aged polystyrene fragments in aquatic environments
Researchers investigated how UV and chemical aging of polystyrene microplastic fragments affects their adsorption and desorption of the antibiotic ciprofloxacin in aquatic environments, finding that aging increased surface area and altered surface chemistry, thereby enhancing adsorption capacity. The study identified key physicochemical properties controlling antibiotic-microplastic interactions and their potential to affect antibiotic bioavailability in contaminated waters.
Effects of particle size and solution chemistry on Triclosan sorption on polystyrene microplastic
Researchers characterized how the antimicrobial compound triclosan adsorbs onto polystyrene microplastics, finding that sorption is driven primarily by hydrophobic interactions and is highest at acidic pH, while temperature, ionic strength, and co-occurring heavy metals had little effect — suggesting polystyrene acts as an environmental carrier for triclosan.
Adsorption behavior of triclosan by different microplastics and the impact of water chemistry
Researchers investigated how triclosan — an antimicrobial compound — adsorbs onto four types of microplastics under varying water chemistry conditions. They found hydrophobic partitioning was the dominant adsorption mechanism, with solution pH, ionic strength, and dissolved organic matter all influencing uptake capacity.
Adsorption of levofloxacin by ultraviolet aging microplastics
Researchers studied how ultraviolet aging changes the ability of common microplastics to adsorb the antibiotic levofloxacin. The study found that UV-aged polystyrene, polyamide, and polyethylene microplastics all showed significantly enhanced adsorption capacity compared to their unaged counterparts, suggesting that weathered microplastics in the environment may carry higher pollutant loads.
Impact of the hydrated functional zone on the adsorption of ciprofloxacin to microplastics under the influence of UV aging
Researchers investigated how UV aging of polyethylene and polystyrene microplastics affects their adsorption of the antibiotic ciprofloxacin, finding that UV-aged particles developed rougher surfaces with increased hydrophilicity due to the formation of a hydrated functional zone. Adsorption isotherm and kinetic modelling showed that this surface transformation significantly altered the binding capacity and mechanisms for ciprofloxacin, with pH also playing a key role in adsorption efficiency.
Adsorption of triclosan onto different aged polypropylene microplastics: Critical effect of cations
This study examined how sodium and calcium ions in water influence the adsorption of triclosan onto aged polypropylene microplastics, finding that cation type and concentration altered sorption behavior through electrostatic interactions. The results have implications for understanding how microplastics transport antimicrobial contaminants in natural water systems.
Behavior and mechanisms of ciprofloxacin adsorption on aged Polylactic Acid and Polyethylene microplastics
This study examined how aged polylactic acid (PLA) and polyethylene (PE) microplastics absorb the antibiotic ciprofloxacin in water. Aging changes the surface chemistry of microplastics, affecting how they pick up and carry antibiotics — which could deliver higher doses of these drugs to organisms that ingest the particles.
Influence of aging processes on PE microplastics with various oxidants: Morphology, chemical structure, and adsorption behavior toward tetracycline
Polyethylene microplastics aged by four different oxidants showed increased surface oxidation and hydrophilicity, with KMnO4-aged and NaOCl-aged PE showing the highest adsorption capacity for tetracycline, while persulfate-aged PE showed the lowest, demonstrating that aging chemistry significantly affects contaminant adsorption.
Mechanistic inferences from empirical and LSER modeling approaches concerning sorption of organic compounds by pristine and aged PE microplastics
Researchers investigated how UV-aging of polyethylene microplastics affects sorption of organic compounds including phenol, trichlorophenol, triclosan, and related compounds, using both empirical experiments and Linear Solvation Energy Relationship (LSER) modeling to reveal how aging-induced surface functional groups such as carbonyl, hydroxyl, and unsaturated bonds alter the sorption mechanisms.
Microplastics modulate triclosan abiotic methylation: Effects of polymer type and photoaging
Researchers investigated how 11 types of pristine and UV-aged microplastics alter the chemical transformation (methylation) of co-occurring triclosan in water, finding that polymer chemistry and photoaging both critically determine whether microplastics accelerate, inhibit, or have no effect on this reaction.
Synergistic Adsorption of Organic Pollutants on Weathered Polyethylene Microplastics
Researchers studied how environmental weathering changes the ability of polyethylene microplastics to adsorb organic pollutants like triclosan and methylparaben. The study found that weathered and oxidatively degradable polyethylene adsorbed significantly more pollutants than virgin plastic, suggesting that aged microplastics in the environment may pose a greater risk as carriers of toxic chemicals.
Enhanced adsorption of tetracycline on polypropylene and polyethylene microplastics after anaerobically microbial-mediated aging process
Researchers found that anaerobic microbial aging of polypropylene and polyethylene microplastics altered their surface structure and crystallinity, significantly enhancing their ability to adsorb the antibiotic tetracycline compared to unaged particles.
Aging characteristics of degradable and non-biodegradable microplastics and their adsorption mechanism for sulfonamides
Researchers investigated how aging processes affect the ability of degradable and non-biodegradable microplastics to adsorb sulfonamide antibiotics in aquatic environments. The study found that aging increased the hydrophilicity and polarity of microplastics, boosting the adsorption capacity of polylactic acid by up to 3.18 times, suggesting that weathered microplastics may pose greater ecological risks as carriers of co-existing contaminants.
Tetracycline adsorption trajectories on aged polystyrene in a simulated aquatic environment: A mechanistic investigation
Researchers found that aging of polystyrene microplastics in simulated aquatic environments progressively altered their surface properties and enhanced tetracycline antibiotic adsorption over time, with pseudo-second-order kinetics best describing the process, highlighting how weathered microplastics may increase antibiotic transport in aquatic systems.