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20 resultsShowing papers similar to As(III) adsorption onto different-sized polystyrene microplastic particles and its mechanism
ClearArsenic adsorption by carboxylate and amino modified polystyrene micro- and nanoplastics: kinetics and mechanisms
Researchers found that functionalized polystyrene micro- and nanoplastics can adsorb arsenic from water, with carboxylate-modified particles showing higher capacity than amino-modified ones, and that salinity and humic acids inhibit adsorption, confirming microplastics can alter arsenic behavior in ecosystems.
Adsorption of arsenite to polystyrene microplastics in the presence of humus
Polystyrene microplastics adsorb arsenic more effectively when humic acid is present in the water, because the organic matter forms a coating on the plastic surface that attracts more arsenic ions. This finding suggests that microplastics can serve as vectors for the toxic metalloid arsenic in natural water environments.
Interface adsorption characteristics of microplastics on multiple morphological arsenic compounds
Researchers studied how polystyrene and PET microplastics adsorb different forms of arsenic, a toxic element commonly found in contaminated water. They found that polystyrene had a much higher capacity to bind arsenic compounds than PET, and that the arsenic-loaded microplastics were more toxic to organisms than either pollutant alone. The study highlights that microplastics can act as carriers for toxic heavy metals, amplifying their environmental harm.
[Adsorption Characteristics of Arsenic on UV-aged Polypropylene Microplastics in Aqueous Solution].
This study examined how UV weathering (aging) changes the ability of polypropylene microplastics to adsorb arsenic from water, finding that aged plastic had rougher surfaces and more oxygen-containing groups, which enhanced arsenic adsorption. Environmental factors like pH and dissolved organic matter also influenced how much arsenic stuck to the plastic. Because aged microplastics bind more arsenic, they could carry this toxic heavy metal into aquatic food webs more effectively than pristine plastic particles.
Effects of polystyrene microplastics on the distribution behaviors and mechanisms of metalloid As(III) and As(V) on pipe scales in drinking water distribution systems
Researchers examined how polystyrene microplastics affect the distribution and adsorption mechanisms of arsenic species As(III) and As(V) onto pipe scales in drinking water distribution systems under varying water conditions. The study found that polystyrene microplastics competed with pipe scale surfaces for arsenic adsorption, altering the partitioning of metalloid contaminants and raising concerns about microplastic-mediated changes to drinking water quality.
Adsorption mechanism of As(III) on polytetrafluoroethylene particles of different size
Polytetrafluoroethylene (PTFE/Teflon) microparticles of different sizes were tested for their ability to adsorb arsenic (As(III)) from water, with smaller particles showing greater adsorption capacity due to higher surface area. The results suggest that PTFE microplastics in arsenic-contaminated environments could transport this toxic metalloid and influence its bioavailability.
Polystyrene and low-density polyethylene pellets are less effective in arsenic adsorption than uncontaminated river sediment
Researchers found that polystyrene and low-density polyethylene microplastic pellets adsorb significantly less arsenic than natural river sediment, suggesting microplastics may actually reduce arsenic mobility when mixed with contaminated sediments.
Adsorption of As(III) by microplastics coexisting with antibiotics
This study examined how microplastics absorb arsenic, a toxic metal, from water, especially when antibiotics are also present. Smaller and more aged microplastic particles absorbed more arsenic, and environmental factors like pH and dissolved organic matter significantly changed absorption rates. This is relevant to human health because microplastics in contaminated water can concentrate toxic metals like arsenic on their surface and potentially carry them into drinking water or the food chain.
Adsorption behavior of aniline pollutant on polystyrene microplastics
Researchers investigated how polystyrene microplastics adsorb the pollutant aniline in aquatic environments, finding that particle size, temperature, and solution chemistry significantly influence adsorption behavior, highlighting microplastics' role as carriers of toxic organic compounds.
The mechanism of polystyrene microplastics to affect arsenic volatilization in arsenic-contaminated paddy soils
Researchers investigated how polystyrene microplastics at different concentrations and sizes affect arsenic volatilization in contaminated paddy soils, finding that microplastic addition increased As volatilization by up to 21.8% in highly contaminated soils. The mechanism involved microplastic-driven shifts in bacterial community composition (particularly Proteobacteria, Firmicutes, and Bacteroidetes) and arsM gene expression, alongside changes in arsenic fractionation.
Effects of microplastics on arsenic uptake and distribution in rice seedlings
Researchers investigated how polystyrene micro- and nanoplastics affect arsenic uptake in rice seedlings grown in a hydroponic system. They found that nanoplastics (82 nm) increased arsenic accumulation in rice leaves by 12 to 37 percent, while larger microplastics (200 nm) reduced it. The study suggests that the size of plastic particles plays an important role in determining how they influence heavy metal uptake in crop plants, with implications for food safety.
Co-transport of arsenic and micro/nano-plastics in saturated soil
Column experiments found that 100 nm nanoplastic particles reduced arsenic transport in saturated sand by adsorbing arsenic ions, while 5 micron microplastics enhanced arsenic transport through electrostatic adsorption and pore plugging, demonstrating size-dependent and opposing effects of micro- and nanoplastics on co-contaminant mobility.
Adsorption behavior of azole fungicides on polystyrene and polyethylene microplastics
Researchers studied how polystyrene and polyethylene microplastics adsorb azole fungicides commonly used in agriculture. The study found that smaller microplastic particle sizes led to stronger adsorption capacity, and factors like pH, ionic strength, and the presence of organic acids all influenced how readily pesticides bind to microplastic surfaces.
Impact of Microplastics on the Fate and Behaviour of Arsenic in the Environment and Their Significance for Drinking Water Supply
This review highlights a largely overlooked problem: microplastics in the environment can adsorb arsenic — one of the world's most dangerous water contaminants — onto their surfaces and potentially transport it to new locations or make it harder to remove during drinking water treatment. The authors call for urgent research into how the presence of microplastics affects the performance of arsenic removal technologies, since both pollutants now co-occur in water sources globally.
Effect and mechanism of coexistence of microplastics on arsenate adsorption capacity in water
Researchers examined how the presence of microplastics affects the ability of different materials to adsorb arsenate from contaminated water. They found that microplastics can interfere with the adsorption process, particularly by competing for binding sites on adsorbent materials like ZIF-8. The study highlights that co-contamination of water with both microplastics and heavy metals may complicate pollution remediation efforts.
Toxicity effects of polystyrene nanoplastics and arsenite on Microcystis aeruginosa
Researchers studied how two types of polystyrene nanoplastics with different surface properties interact with arsenic to affect freshwater algae. They found that nanoplastics with a sulfonic acid surface modification caused more severe growth inhibition and metabolic disruption in the algae, while both types reduced arsenic uptake by the organisms. The study highlights that the specific surface chemistry of nanoplastics significantly influences their environmental toxicity.
Interaction mechanism of water-soluble inorganic arsenic onto pristine nanoplastics
Researchers used computational chemistry to model how water-soluble arsenic interacts with various types of nanoplastics including PET, polyamide, PVC, polyethylene, polypropylene, and polystyrene. The study found that arsenic can form stable surface layers on nanoplastics, suggesting these tiny plastic particles may serve as carriers for toxic metalloids in contaminated aquatic environments.
Effects of microplastic on arsenic accumulation in Chlamydomonas reinhardtii in a freshwater environment
Researchers found that polystyrene microplastics of two sizes disrupted phospholipid membrane structure in the microalga Chlamydomonas reinhardtii, reducing its ability to accumulate and detoxify arsenic in freshwater. Smaller 100 nm particles caused greater inhibition of arsenic uptake and the detoxification pathway than 5 µm particles, indicating that nanoplastic size amplifies toxicological impacts on arsenic biogeochemical cycling.
Competitive mechanism of microplastic addition for the adsorption of arsenic from an aqueous solution by magnetic biochar-supported layered double hydroxide
Researchers investigated competitive interactions between different microplastic types and pentavalent arsenic (As(V)) during adsorption onto a magnetic biochar-supported layered double hydroxide composite (MBC@LDH), examining the effects of pH, ionic strength, temperature, material dosage, and microplastic concentration. Their results revealed that microplastic presence significantly altered As(V) adsorption efficiency, with the competitive mechanisms varying by microplastic type and solution conditions.
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.