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61,005 resultsShowing papers similar to Adsorption properties and mechanism of Cu(II) on virgin and aged microplastics in the aquatic environment
ClearAdsorption properties and mechanism of Cu(Ⅱ) on virgin and aged microplastics in the aquatic environment
This study examined how UV aging of polyamide (PA) and polylactic acid (PLA) microplastics affects their ability to adsorb copper (Cu II) from water. UV aging increased surface area and altered surface chemistry, making aged microplastics better carriers of copper contamination — raising concerns that weathered plastics in the environment may concentrate and transport heavy metals more effectively than fresh plastics.
Adsorption behavior of Cu(II) on UV-aged polyethylene terephthalate and polypropylene microplastics in aqueous solution
Researchers studied how UV aging changes the ability of PET and polypropylene microplastics to adsorb copper ions from water. UV exposure altered the surface properties of both plastics, increasing their capacity to bind heavy metals compared to pristine particles. The findings suggest that weathered microplastics in the environment may be more effective at concentrating toxic metals, potentially increasing ecological risks in contaminated waterways.
Adsorption of Cu2+ by UV aged polystyrene in aqueous solution
UV-aged polystyrene microplastics showed altered surface chemistry and enhanced adsorption of copper ions compared to virgin particles, with the degree of adsorption increasing with aging duration. The findings indicate that environmental weathering transforms microplastics into more potent heavy metal carriers, intensifying their role as pollutant vectors.
Insights into adsorption behavior and mechanism of Cu(II) onto biodegradable and conventional microplastics: Effect of aging process and environmental factors
Researchers compared how biodegradable and conventional microplastics adsorb copper ions from water, examining how aging processes and environmental factors influence this interaction. The study found that aged microplastics had a greater capacity to bind copper than fresh ones, suggesting that weathered plastic debris in the environment may serve as carriers for heavy metal contaminants.
Enhanced copper adsorption by polyamide and polylactic acid microplastics: The role of biofilm development and chemical aging
Researchers studied how chemical aging and biofilm growth on polyamide and polylactic acid microplastics changed their ability to absorb copper from water. Both processes significantly increased the surface area and chemical reactivity of the plastics, making them absorb substantially more copper than fresh microplastics. The study suggests that as microplastics age and develop biofilms in natural waterways, they become increasingly effective at concentrating heavy metals, potentially altering how these contaminants move through aquatic environments.
Adsorption behavior of UV aged microplastics on the heavy metals Pb(II) and Cu(II) in aqueous solutions
Researchers examined how UV aging affects the adsorption of lead and copper onto polypropylene, polyethylene, and polystyrene microplastics, finding that aging creates new oxidation functional groups that enhance heavy metal adsorption capacity.
The effect of UV exposure on conventional and degradable microplastics adsorption for Pb (II) in sediment
Researchers studied how UV aging affects the ability of conventional polyethylene and degradable polylactic acid microplastics to adsorb lead ions from aquatic sediment. They found that UV aging increased the surface area and oxygen content of both plastic types, enhancing their capacity to adsorb heavy metals. The study suggests that weathered microplastics in the environment may be more effective carriers of heavy metal contamination than pristine particles.
The adsorption behavior of metals in aqueous solution by microplastics effected by UV radiation
Virgin and UV-aged PET microplastics were compared for their sorption capacity of copper and zinc ions, with aged microplastics showing higher adsorption due to increased surface area and oxygen-containing functional groups formed during photoaging. The study demonstrates that environmental weathering enhances the metal-carrying potential of microplastics over time.
The Effect of Different Aging Methods on the Heavy Metal Adsorption Capacity of Microplastics
Polystyrene and polylactic acid microplastics were aged under UV and high-temperature conditions, and aged microplastics showed altered surface properties that affected their adsorption capacity for heavy metals cadmium, copper, and zinc.
Increased Cu(II) Adsorption Onto UV-Aged Polyethylene, Polypropylene, and Polyethylene Terephthalate Microplastic Particles in Seawater
Researchers found that UV aging significantly increased copper(II) adsorption onto polyethylene, polypropylene, and polyethylene terephthalate microplastics in seawater by up to 2.92 times after 12 months, with oxidation-induced surface changes and smaller particle sizes amplifying this effect for PP and PET.
Aging properties of polyethylene and polylactic acid microplastics and their adsorption behavior of Cd(II) and Cr(VI) in aquatic environments
Researchers compared how polyethylene and polylactic acid (PLA) microplastics age in the environment and how that aging affects their ability to absorb heavy metals like cadmium and chromium from water. They found that aging changed the surface chemistry of both plastic types, increasing their capacity to pick up these toxic metals. The findings matter because aged microplastics in the environment may concentrate and transport more pollutants than fresh plastic particles.
Study on the Adsorption Behavior and Mechanism of Heavy Metals in Aquatic Environment before and after the Aging of Typical Microplastics
Researchers investigated the adsorption behavior and mechanisms of heavy metals by typical microplastics before and after environmental aging, finding that aging significantly alters microplastics' surface properties and capacity to bind metals such as cadmium and lead in aquatic systems.
Unraveling Complexation and Contaminant Vector Potential in Aged Polyamide-Heavy Metal Interactions
Researchers found that heat-aged polyamide microplastics exhibit enhanced adsorption capacity for cadmium and copper compared to virgin material, with copper showing higher adsorption efficiency due to its smaller hydrated ionic radius and strong coordination with oxygen- and nitrogen-containing surface groups on the aged polymer.
Unraveling the adsorption behavior of Zn(II) on UV-aged PET and PP microplastics: kinetic and isotherm analyses
This study examined how UV aging changes the ability of PET and polypropylene microplastics to adsorb zinc from water. Researchers found that UV exposure over 30 days increased surface roughness and oxygen-containing functional groups on the plastics, significantly enhancing their capacity to bind zinc ions, which suggests that weathered microplastics in the environment may carry higher concentrations of heavy metals.
Aging mechanism of microplastics with UV irradiation and its effects on the adsorption of heavy metals
Researchers aged polystyrene microplastics using UV irradiation under three conditions (air, pure water, seawater) and found that aging changed surface chemistry and increased the microplastics' capacity to adsorb heavy metals, with seawater aging producing the most pronounced surface oxidation.
Adsorption and Desorption Behavior of Microplastics on Copper Ions in Aqueous Solution
This study investigated how microplastics of different types and surface chemistry adsorb and release copper ions in water. The findings show that microplastics can pick up and later release heavy metals depending on environmental conditions, acting as vectors that transport toxic metals through aquatic ecosystems.
Adsorption behaviors of the pristine and aged thermoplastic polyurethane microplastics in Cu(II)-OTC coexisting system
Thermoplastic polyurethane (TPU) microplastics in both pristine and photo-aged forms were tested for their ability to simultaneously adsorb the antibiotic oxytetracycline and the heavy metal copper(II) from water. Photo-aged TPU showed altered adsorption capacity compared to pristine TPU, indicating that weathering changes the contaminant-carrying behavior of plastic debris.
Characterization of polyethylene and polyurethane microplastics and their adsorption behavior on Cu2+ and Fe3+ in environmental matrices
Researchers characterized polyethylene and polyurethane microplastics and measured their ability to adsorb heavy metals, finding that both types can bind copper and iron ions from water — raising concern that microplastics may act as carriers that transport toxic metals deeper into aquatic ecosystems and food chains.
Adsorption properties and influencing factors of Cu(II) on polystyrene and polyethylene terephthalate microplastics in seawater
Researchers investigated how polystyrene and polyethylene terephthalate microplastics adsorb copper ions in seawater, characterizing adsorption kinetics and influencing factors to understand microplastics' role as vectors for heavy metal pollutants in marine environments.
Unraveling Complexation and Contaminant Vector Potentialin Aged Polyamide-Heavy Metal Interactions
Researchers found that aged polyamide (PA) microplastics exhibited enhanced adsorption capacity for cadmium and copper compared to pristine PA, with increased surface roughness from aging promoting stronger metal binding via electrostatic interactions, and environmental factors such as pH influencing subsequent metal desorption.
Interfacial interactions of polyethylene terephthalate microplastics and malachite green, tetracycline in aqueous environments
This study examined how UV aging changes the surface properties of polyethylene terephthalate microplastics and how those changes affect their ability to adsorb pollutants like malachite green and tetracycline. Researchers found that aged microplastics showed increased adsorption capacity, and the co-presence of copper ions further influenced these interactions in aqueous environments.
Adsorption Characteristics of Heavy Metals onto Functionalized Microplastics
This study tested how three types of functionalized microplastics—polyacrylate, biobased polyurethane, and petroleum-based polyurethane—absorb toxic heavy metals including lead, copper, and cadmium. Smaller particles and UV-weathered plastic showed higher adsorption, meaning aged microplastics in the environment can act as concentrated carriers of heavy metal contamination, amplifying ecological risk.
Aging characteristics of polylatic acid microplastics and their adsorption on hydrophilic organic pollutants: mechanistic investigations and theoretical calculations
Researchers characterized how polylactic acid microplastics undergo UV and thermal aging in aquatic environments, finding that aging altered surface chemistry, increased hydrophilicity, and enhanced adsorption of heavy metal pollutants—raising concerns about aged biodegradable plastics as carriers of co-contaminants.
Adsorption of copper by naturally and artificially aged polystyrene microplastics and subsequent release in simulated gastrointestinal fluid
Researchers compared how naturally and artificially aged polystyrene microplastics adsorb copper and then release it in simulated digestive fluids. They found that naturally aged microplastics from a lake adsorbed the most copper, largely due to metallic oxide deposits on their surfaces. The study suggests that aged microplastics may act as vectors for transporting metals into organisms through ingestion, with the aging method significantly affecting how much metal is carried and released.