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61,005 resultsShowing papers similar to Can Microplastics Accumulate Toxic dye in Water? An adsorption-desorption Study under Different Experimental Conditions
ClearAdsorption of rhodamine B on polyvinyl chloride, polystyrene, and polyethylene terephthalate microplastics in aqueous environments
Researchers studied how three common types of microplastics absorb rhodamine B, a toxic dye, from water and found that PVC had the highest absorption capacity. Environmental factors like pH, salt concentration, and temperature significantly influenced how much dye the plastics could absorb. The findings suggest that microplastics in waterways may concentrate toxic chemicals on their surfaces, potentially increasing environmental and health risks beyond the plastics themselves.
Contaminated microplastics: adsorption/desorption of Rhodamine B and phase separation by electrocoagulation-flotation
Researchers studied the adsorption and desorption behavior of Rhodamine B dye onto microplastics under varying conditions, finding that contaminated microplastics can accumulate and later release dye pollutants in aquatic environments. The results contribute to understanding how microplastics serve as carriers for organic contaminants.
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.
Potential of Adsorption of Diverse Environmental Contaminants onto Microplastics
Researchers assessed the ability of four common types of microplastics to adsorb hazardous environmental contaminants including dyes and heavy metals. They found that dyes were adsorbed through physical processes while heavy metal adsorption varied by plastic type, with polystyrene showing the highest capacity for certain metals. The study confirms that microplastics can act as vectors for diverse pollutants, potentially increasing the environmental mobility and bioavailability of toxic substances.
PVC microplastics as vectors for dye pollutants: Adsorption of rhodamine B and AI-based predictive modeling
Researchers studied the adsorption of Rhodamine B dye onto PVC microplastics under varying pH, concentration, and temperature conditions. PVC-MPs adsorbed substantial quantities of the dye through combined electrostatic and hydrophobic mechanisms, demonstrating their potential to transport organic contaminants through aquatic environments.
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.
Understanding the interaction between selected microplastics and the toxic dye "Congo red" in water
Researchers studied how five common types of microplastics adsorb Congo Red dye from water, finding that high-density polyethylene had the highest adsorption capacity at nearly 22 milligrams per gram. The adsorption process followed different kinetic and isotherm models depending on the plastic type, and both surface area and chemical interactions played important roles. The study suggests that microplastics in contaminated waters can concentrate toxic dyes, potentially increasing environmental risks.
Adsorption of crystal violet on polystyrene microplastics in aqueous: optimization, modeling, and assessment of isotherms and kinetics
Researchers showed that polystyrene microplastics can efficiently absorb crystal violet dye — a toxic industrial dye — from water, with optimal removal near 85% under controlled conditions. The study highlights that microplastics don't just pollute on their own; they also act as sponges that carry harmful chemical contaminants through aquatic environments.
Recent advances in dyes uptake by microplastics in aquatic environments: Influencing factors and ecotoxicological behaviors
This review examined how microplastics in water environments can absorb and carry dye pollutants, effectively acting as transport vehicles for these contaminants. Researchers found that environmental factors like water salinity, pH, and temperature, as well as the physical properties of the microplastics themselves, all influence how much dye they can absorb, which has implications for understanding combined pollution risks in aquatic systems.
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.
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.
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.
Adsorption of cyanotoxins on polypropylene and polyethylene terephthalate: Microplastics as vector of eight microcystin analogues
Eight microcystin analogues were tested for adsorption onto polypropylene and polyethylene terephthalate microplastics, finding that these common plastics can bind cyanotoxins from freshwater environments. The study identifies microplastics as potential vectors for cyanobacterial toxins in lakes and reservoirs, with implications for drinking water safety.
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.
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.
Adsorption and desorption of methyl orange dye on environmentally aged polyethylene, polyethylene terephthalate and polystyrene microplastics in aquatic environment
This study examined how environmentally aged PE, PET, and PS microplastics adsorb the anionic dye methyl orange in aquatic environments. Adsorption capacities were 2.86, 3.64, and 3.81 mg/g for PE, PET, and PS respectively, following pseudo-second-order kinetics and Langmuir/Freundlich isotherms, with chemisorption, hydrogen bonding, and hydrophilic interactions as key mechanisms.
Adsorption of Contaminants of Emerging Concern (CECs) with Varying Hydrophobicity on Macro- and Microplastic Polyvinyl Chloride, Polyethylene, and Polystyrene: Kinetics and Potential Mechanisms
Researchers found that both plastic size and polymer type influenced the adsorption of contaminants of emerging concern onto PVC, polyethylene, and polystyrene, with microplastics generally adsorbing more than macroplastics and contaminant hydrophobicity playing a key role in determining adsorption kinetics and capacity.
MO 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.
Comparative evaluation of sorption kinetics and isotherms of pyrene onto microplastics
This study compared how quickly and how much pyrene — a common polycyclic aromatic hydrocarbon — is absorbed by different types of microplastics in aquatic environments. The results indicate that microplastic polymer type significantly affects how well it concentrates and potentially transports toxic organic chemicals.
Microplastics as potential bisphenol carriers: role of adsorbents, adsorbates, and environmental factors
Laboratory experiments showed that four common microplastic types — polystyrene, polypropylene, polyamide, and PVC — all readily adsorb bisphenols (BPA, BPB, BPF, BPS), with polyamide showing the highest capacity. Adsorption was strongly influenced by polymer surface chemistry, bisphenol hydrophobicity, temperature, and salinity. Because bisphenols are potent endocrine disruptors, microplastics acting as their environmental carriers could amplify human and wildlife exposure through contaminated seafood and drinking water.
Microcystin bound on microplastics in eutrophic waters: A potential threat to zooplankton revealed by adsorption-desorption processes
Researchers studied adsorption and desorption of the cyanotoxin microcystin onto microplastics in eutrophic freshwater and found that microplastics can act as vectors carrying bound cyanotoxins to zooplankton, enhancing toxin transfer through the food web beyond what free toxin exposure alone would predict.
Adsorption characteristics of cadmium onto microplastics from aqueous solutions
Laboratory adsorption experiments characterized how cadmium is taken up by microplastics of different polymer types from aqueous solutions, finding adsorption capacity varied significantly with polymer chemistry, particle size, and solution conditions. The results help predict how microplastics in contaminated waterways accumulate and transport cadmium, a highly toxic heavy metal.
Microplastics as adsorbent for Pb2+ and Cd2+: A comparative study of polypropylene, polyvinyl chloride, high-density polyethylene, and low-density polyethylene
Researchers compared how four common types of microplastics adsorb lead and cadmium heavy metals in aquatic environments. The study found that polypropylene had the highest adsorption capacity for both metals, with oxygen-containing functional groups playing a key role in the adsorption process, suggesting that different microplastic types pose varying levels of environmental risk as heavy metal carriers.
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.