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61,005 resultsShowing papers similar to Adsorption and desorption of methyl orange dye on environmentally aged polyethylene, polyethylene terephthalate and polystyrene microplastics in aquatic environment
ClearMO dye adsorption and desorption on MPs.
Researchers investigated the adsorption and desorption of methyl orange, an anionic dye, on environmentally aged polyethylene, polyethylene terephthalate, and polystyrene microplastics, characterizing their interactions in aquatic environments using FTIR and other analytical methods to understand contaminant co-transport risks.
Adsorption–desorption behavior of methylene blue onto aged polyethylene microplastics in aqueous environments
Researchers photoaged polyethylene microplastics under xenon light and measured changes in surface properties and adsorption-desorption behavior for methylene blue dye, finding that aging increased surface oxidation, enhanced dye adsorption capacity, and altered desorption kinetics compared to virgin particles.
Can Microplastics Accumulate Toxic dye in Water? An adsorption-desorption Study under Different Experimental Conditions
Researchers investigated the adsorption and desorption of the toxic dye Rhodamine B on polystyrene, polypropylene, and polyvinyl chloride microplastics under different experimental conditions. Results showed fast and substantial adsorption of the dye onto all three plastic types, with adsorption coefficients ranging from approximately 1,500 to 2,000, indicating microplastics can act as carriers of toxic dyes in aquatic environments.
Comparing the adsorption of methyl orange and malachite green on similar yet distinct polyamide microplastics: Uncovering hydrogen bond interactions
Researchers compared how two polyamide microplastic types adsorb anionic and cationic dyes in aquatic environments, finding that hydrogen bonding is the primary interaction mechanism. The study revealed that polyamide 6 formed more hydrogen bonds with dyes than polyamide 66, resulting in higher adsorption capacity, and that pH strongly influenced which dye dominated in competitive adsorption scenarios.
Identification of the degree of aging and adsorption behaviors of the naturally aged microplastics
Used plastic packaging materials representing naturally aged microplastics showed varied degrees of surface oxidation and changes in carbonyl, hydroxyl, and ester groups, with aging degree strongly influencing adsorption behavior for both anionic and cationic dyes.
Competition adsorption of malachite green and rhodamine B on polyethylene and polyvinyl chloride microplastics in aqueous environment
Researchers examined the competitive adsorption of two organic dyes, malachite green and rhodamine B, onto polyethylene and polyvinyl chloride microplastics in water, finding that both microplastic types preferentially adsorb malachite green and that competitive effects depend on initial dye concentrations.
Experimental and Computational Insights into Congo Red Adsorption by Polyethylene and Polyethylene Terephthalate Microplastics
Researchers investigated the adsorption of Congo red dye onto polyethylene (PE) and polyethylene terephthalate (PET) microplastics through laboratory experiments and computational modeling, finding that PE and PET exhibit distinct adsorption behaviors related to their differing surface chemistry. The study explores whether microplastics, though typically environmental hazards, could be valorized as low-cost adsorbents for textile dye removal from effluents.
Comparison of rhodamine B adsorption and desorption on the aged non-degradable and degradable microplastics: Effects of charge-assisted hydrogen bond and underline mechanism
Researchers compared how the dye rhodamine B adsorbs and desorbs from aged versus fresh forms of both degradable and non-degradable microplastics. They found that UV aging increased adsorption capacity across all plastic types by creating rougher surfaces and more oxygen-containing functional groups. The study reveals that charge-assisted hydrogen bonding plays a key role in how aged microplastics interact with cationic organic pollutants in the environment.
Identification of naturally weathering microplastics and their interactions with ion dyes in aquatic environments
Researchers collected naturally weathered microplastics and examined their adsorption and desorption of the cationic dye crystal violet, finding that weathering significantly altered surface properties and enhanced pollutant binding capacity compared to pristine plastics.
Adsorption of fluoranthene and phenanthrene by virgin and weathered polyethylene microplastics in freshwaters
Researchers examined how virgin and weathered polyethylene microplastics adsorb fluoranthene and phenanthrene in freshwater, finding that weathering significantly increased adsorption capacity and that water chemistry influenced contaminant uptake.
Enhanced sorption of the UV filter 4-methylbenzylidene camphor on aged PET microplastics from both experimental and theoretical perspectives
The aging process of polyethylene terephthalate (PET) microplastics was studied by examining how weathering changes their surface morphology and ability to sorb the sunscreen chemical 4-methylbenzylidene camphor (4-MBC). Aged PET showed enhanced sorption of 4-MBC compared to pristine PET, indicating that environmental weathering increases the capacity of microplastics to accumulate organic contaminants.
Aging and characterization of disposable polypropylene plastic cups based microplastics and its adsorption for methylene blue
This study characterized the aging of polypropylene microplastics derived from disposable cups and assessed their adsorption capacity for the dye methylene blue, finding that aging altered surface chemistry and increased adsorption. The results highlight how weathered microplastics from food packaging may accumulate organic contaminants differently than pristine particles.
Adsorption of Reactive Red 120 Dye by Polyamide Nylon 6 Microplastics: Isotherm, Kinetic, and Thermodynamic Analysis
This study examined the adsorption of Reactive Red 120 dye onto Polyamide Nylon 6 microplastics, finding maximum uptake at pH 2.0 and characterizing the adsorption kinetics and thermodynamics, which has implications for microplastic roles as dye carriers in aquatic environments.
Adsorption of chlorophenols on polyethylene terephthalate microplastics from aqueous environments: Kinetics, mechanisms and influencing factors
Researchers investigated the adsorption of chlorophenols onto polyethylene terephthalate (PET) microplastics from aqueous environments, examining the contributions of hydrophobic, hydrogen-bonding, pi-pi, and electrostatic interactions. The study found that hydrogen bonding and pi-pi interactions were key mechanisms driving chlorophenol uptake by PET microplastics in natural water conditions.
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.
A combined experimental and modeling study to evaluate pH-dependent sorption of polar and non-polar compounds to polyethylene and polystyrene microplastics
A combined experimental and modeling study assessed how pH affects the sorption of both polar and non-polar compounds to polyethylene and polystyrene microplastics, finding that pH significantly influenced sorption of ionizable pollutants. The results improve predictions of how microplastics accumulate and transport contaminants under varying environmental conditions.
Sorption of pesticides onto polyethylene microplastics in different aqueous matrices
This thesis examined how pesticides adsorb onto polyethylene microplastics in different aqueous matrices, finding that water chemistry significantly affects the binding behavior and potential for microplastics to carry agricultural chemicals.
The adsorption and desorption behaviors of phenanthrene and pyrene onto microplastics in the aquatic environment and digestive fluids
This study examined how polycyclic aromatic hydrocarbons (PAHs) like phenanthrene and pyrene adsorb to and desorb from four types of microplastics in both freshwater and simulated digestive fluids. The findings show that PAHs bind strongly to microplastics and can be released under digestive conditions, suggesting that microplastics can deliver organic pollutants to organisms that ingest them.
Adsorption and Desorption Behaviour of Polychlorinated Biphenyls onto Microplastics’ Surfaces in Water/Sediment Systems
Researchers evaluated the adsorption and desorption behavior of polychlorinated biphenyls (PCBs) onto polystyrene, polyethylene, and polyethylene terephthalate microplastics of varying sizes in marine water/sediment systems. Results showed that polymer type and particle size influenced PCB binding capacity, with microplastics acting as potential vectors for transferring persistent organic pollutants to marine biota through the food chain.
Adsorption properties of natural and synthetic fiber microplastics for organic dyes: Effects of aging and environmental factors
This study investigated how UV aging of disposable face towels made from regenerated cellulose or PET alters their surface properties and dye adsorption behavior in aquatic environments, finding that aging-induced changes in surface charge and hydrophilicity significantly affect contaminant transport capacity.
Insights Into the Adsorption Behavior of Polyethylene Microplastics Towards Lead(II) Ions
Researchers investigated the adsorption behavior of lead(II) ions onto polyethylene microplastics in freshwater environments by systematically varying initial Pb(II) concentration, pH, and residence time, using scanning electron microscopy and other characterization methods to elucidate the interaction dynamics and sorption mechanisms between this common metal contaminant and microplastic surfaces.
Nanoplastic adsorption characteristics of bisphenol A: The roles of pH, metal ions, and suspended sediments
Researchers found that nanoplastics adsorb bisphenol A through electrostatic, pi-pi stacking, and hydrophobic interactions, with adsorption capacity influenced by pH, competing metal ions, and suspended sediments, highlighting nanoplastics as vectors for BPA transport in aquatic environments.
Adsorption of di (2-ethylhexyl) phthalate (DEHP) to microplastics in seawater: a comparison between pristine and aged particles
Natural aging of polyethylene and polystyrene microplastics in seawater over three months increased their adsorption capacity for the plasticizer DEHP compared to pristine particles, due to surface oxidation and biofilm formation. The results indicate that environmentally aged MPs are stronger vectors for hydrophobic contaminants than fresh MPs used in most laboratory studies.
Adsorption of acid and basic dye from the simulated wastewater using carbonized microplastic particles synthesized from recycled polyethylene terephthalate plastic waste bottles: an integrated approach for experimental and practical applications
Researchers carbonized waste PET plastic bottles to create microplastic-like adsorbent particles and demonstrated their effectiveness in removing over 99% of methylene blue and methyl orange dyes from simulated wastewater, with adsorption optimized by response surface methodology and confirmed as exothermic, spontaneous, and applicable to real wastewater.