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61,005 resultsShowing papers similar to Adsorption behavior of triclosan by different microplastics and the impact of water chemistry
ClearEffects 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 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.
Effect of microplastic size on the adsorption behavior and mechanism of triclosan on polyvinyl chloride
The adsorption of triclosan (an antimicrobial compound) onto polyvinyl chloride microplastics was found to depend strongly on microplastic particle size, with smaller particles adsorbing more triclosan per unit mass due to their higher surface-area-to-volume ratio. This size-dependent sorption behavior influences the potential for microplastics to transport antimicrobial chemicals in aquatic environments.
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.
The sorption behavior of triclosan on microplastics: aging effects and mechanisms
Researchers investigated how environmental aging processes change the ability of polyethylene, polypropylene, and polystyrene microplastics to absorb the antimicrobial compound triclosan. They found that aging increased sorption capacity for polyethylene but decreased it for polypropylene, with polystyrene showing mixed results depending on the aging method. The changes were driven by modifications to surface chemistry, particularly the introduction of oxygen-containing functional groups that alter hydrophobic and electrostatic interactions.
Mechanistic insight into different adsorption of norfloxacin on microplastics in simulated natural water and real surface water
This study compared the adsorption of norfloxacin antibiotic onto microplastics in simulated natural water versus real surface water, finding that natural organic matter and competing ions in real water significantly reduced antibiotic uptake by microplastics.
Adsorption of antibiotics on microplastics
This study examined the adsorption of antibiotics onto different microplastic types, finding that sorption capacity depended on both the antibiotic's chemical properties and the plastic's surface characteristics, with implications for antibiotic transport in aquatic environments.
Adsorption of the antimicrobial triclosan to microplastics impacts biofilm and planktonic microbial communities in freshwater
Researchers tested how triclosan—an antimicrobial compound—adsorbs to microplastics and what effect this has on microbial biofilm communities in freshwater. Triclosan-loaded microplastics shifted microbial community composition and increased abundance of antibiotic-resistant bacteria in biofilms, demonstrating that microplastics acting as vectors for antimicrobials can restructure freshwater microbial ecosystems.
The effects of environmental conditions on the enrichment of antibiotics on microplastics in simulated natural water column
Researchers investigated how environmental ageing conditions affect the ability of microplastics to adsorb the antibiotic tetracycline, finding that pH, ionic strength, and temperature had little effect, but humic acid significantly reduced adsorption capacity. The reduction was attributed to humic acid covering plastic surfaces, altering hydrophobicity, and competing for adsorption sites via electrostatic repulsion.
Interaction mechanism of triclosan on pristine microplastics
Researchers used computational chemistry to model how the antimicrobial chemical triclosan interacts with five common types of pristine microplastics at the molecular level. They found that triclosan attaches to all microplastic surfaces through physical adsorption rather than chemical bonding, with polyamide showing the strongest attraction. The study provides molecular-level evidence that microplastics can act as carriers for personal care product chemicals in water environments.
Strong influence of surfactants on virgin hydrophobic microplastics adsorbing ionic organic pollutants
Researchers found that surfactants cause hydrophobic microplastics to adsorb ionic organic pollutants at much higher rates than previously recognized, revealing that the typical assumption of minimal interaction between hydrophobic plastics and hydrophilic contaminants underestimates real-world pollutant uptake. The findings indicate that surfactant ubiquity in environmental waters substantially alters microplastic pollutant-carrying capacity.
Interfacial interaction between diverse microplastics and tetracycline by adsorption in an aqueous solution
Polyethylene microplastics showed the strongest adsorption of the antibiotic tetracycline among three plastic types tested, and the presence of metals like lead and zinc enhanced tetracycline adsorption while copper reduced it. Ion exchange was identified as the primary adsorption mechanism, suggesting that microplastics in aquaculture settings could concentrate antibiotics and increase their environmental persistence.
Microplastics play a minor role in tetracycline sorption in the presence of dissolved organic matter
Researchers studied the sorption of the antibiotic tetracycline onto microplastics in the presence of dissolved organic matter, finding that dissolved organics competed strongly for binding sites on microplastics, meaning real-world conditions substantially reduce microplastic uptake of tetracycline.
Microplastics and organics – A comparative study of sorption of triclosan and malachite green onto polyethylene
This study compared how two organic pollutants — the hydrophobic triclosan and hydrophilic malachite green — sorb onto polyethylene microplastics, finding that hydrophobic interaction dominates triclosan uptake while surface-based van der Waals forces govern malachite green sorption.
Adsorption behavior of triclosan on microplastics and their combined acute toxicity to D. magna
Researchers studied how the antibacterial chemical triclosan attaches to different types of microplastics in water and tested their combined toxicity on water fleas. They found that triclosan readily adsorbed onto polystyrene, polyethylene, and polypropylene microplastics, with the process influenced by water chemistry factors like pH and salt content. When water fleas were exposed to microplastics carrying triclosan, the combined toxicity was greater than from either contaminant alone.
Adsorption of PFAS onto secondary microplastics: A mechanistic study
Researchers investigated how PFAS (per- and polyfluoroalkyl substances) adsorb onto secondary microplastics under different water chemistry conditions. Results showed that PFAS adsorption depended on both the chemical structure of the PFAS compound and the ionic composition of the water. These findings help explain how microplastics in real-world aquatic environments can concentrate and transport PFAS, a group of persistent health-relevant pollutants.
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.
Sorption of pharmaceuticals on the surface of microplastics
Researchers tested the ability of four common microplastic types to adsorb nine pharmaceutical compounds frequently found as water pollutants. They found that sorption involved both hydrophobic and electrostatic interactions, but under natural environmental conditions the binding was relatively weak. The study suggests that while microplastics can interact with pharmaceutical residues, their role as carriers of these contaminants in real aquatic environments may be more limited than previously assumed.
Sorption of selected pharmaceutical compounds on polyethylene microplastics: Roles of pH, aging, and competitive sorption
Researchers found that polyethylene microplastics adsorb pharmaceutical compounds including an antibiotic, a beta-blocker, and an antidepressant, with sorption capacity influenced by pH, aging of the plastic, and competition between compounds — raising concern about microplastics as carriers of pharmaceuticals in aquatic environments.
Can Polylactic Acid (PLA) Act as an Important Vector for Triclosan?
This study tested whether polylactic acid acts as a carrier for the antimicrobial compound triclosan, comparing PLA with polystyrene, PVC, and polyethylene of different particle sizes. PLA showed lower triclosan adsorption than non-biodegradable polymers, but its carrier capacity increased under acidic conditions, with implications for how biodegradable microplastics transport chemical contaminants.
Comparison of adsorption and desorption of triclosan between microplastics and soil particles
Researchers compared adsorption and desorption of triclosan on polyethylene and polystyrene microplastics versus soil particles, finding that PE had the highest adsorption rate and equilibrium capacity while PS and soil showed similar profiles. The results suggest that microplastics in soil environments can compete with soil particles for triclosan binding, potentially altering the contaminant's mobility and bioavailability.
Investigation of interfacial adsorption between microplastics and methylparaben in aqueous solution
Researchers investigated the adsorption of methylparaben — a common preservative — onto polystyrene, polyethylene, PET, and PVC microplastics in aqueous solution, finding that adsorption capacity varied by polymer type and was influenced by pH and ionic strength, with implications for paraben transport in aquatic environments.
Adsorption–Desorption Behaviors of Enrofloxacin and Trimethoprim and Their Interactions with Typical Microplastics in Aqueous Systems
Researchers investigated how two common aquaculture antibiotics, enrofloxacin and trimethoprim, adsorb to and desorb from polystyrene, polyvinyl chloride, and polyethylene microplastics in water. They found that adsorption followed multilayer patterns driven by physical interactions including hydrogen bonding and electrostatic forces, with PS and PVC showing higher adsorption capacity than PE. The study highlights how microplastics can serve as carriers for antibiotic pollutants in aquatic environments, with high salinity and pH changes promoting desorption and secondary contamination.
Adsorption and Desorption of Triclosan on Biodegradable Polyhydroxybutyrate Microplastics
This study examined how the widely used antimicrobial chemical triclosan adsorbs onto and desorbs from biodegradable polyhydroxybutyrate (PHB) microplastics. Even biodegradable plastics can act as vectors for chemical pollutants, accumulating triclosan from water and potentially releasing it into organisms that ingest the particles.