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61,005 resultsShowing papers similar to Radionuclide Removal from Aqueous Solutions by Oxidized Carbon Fabrics
ClearRadionuclide Removal from Aqueous Solutions Using Oxidized Carbon Fabrics
This paper is not directly about microplastics; it investigates the adsorption of radioactive actinide ions (americium and uranium) from water using carbon fabric materials, finding near-complete removal of uranium under optimal pH and temperature conditions.
Rapid adsorption of benzotriazole onto oxidized carbon cloth as an easily separable adsorbent
Researchers treated carbon cloth with nitric acid to create a more effective adsorbent for benzotriazole, a common industrial pollutant found in waterways. The oxidized material removed the contaminant rapidly, could be fully regenerated with plain water, and maintained its performance across five reuse cycles, suggesting a low-cost, sustainable water treatment option.
Actinide ion (Americium-241 and Uranium-232) Interaction with Hybrid Silica-Hyperbranched Poly(ethylene imine) Nanoparticles and Xerogels
This study investigated silica-hyperbranched polymer nanoparticles for removing radioactive actinide ions (americium and uranium) from water. While focused on nuclear contaminants, this work is relevant to understanding how polymer-based nanomaterials interact with and remove various pollutants from water systems.
Removal of 241Am from Aqueous Solutions by Adsorption on Sponge Gourd Biochar
Researchers developed biochar from sponge gourd biomass and demonstrated its effectiveness at removing americium-241 from aqueous solutions, with oxidized biochar fibers showing enhanced adsorption capacity due to their unique microporous structure.
Actinide Ion (Americium-241 and Uranium-232) Interaction with Hybrid Silica–Hyperbranched Poly(ethylene imine) Nanoparticles and Xerogels
Researchers studied the adsorption of americium-241 and uranium-232 from aqueous solutions by hybrid silica-hyperbranched poly(ethylene imine) nanoparticles and xerogels at pH 4, 7, and 9. Both materials achieved removal efficiencies above 70% at pH 4 and 7 for both actinides, with adsorption governed by diffusion from the aqueous phase, enhanced by increasing temperature in an endothermic entropy-driven process.
Exploring the Adsorption Behavior of Organic UV Filter on Carbon-Based Materials as Potential Carriers of Organic Contaminants in the Aquatic Environment
Researchers explored how carbon-based materials in aquatic environments can adsorb organic UV filter compounds, which are common personal care product ingredients. They found that these materials can act as carriers for organic contaminants, potentially redistributing pollutants in water systems. The study raises awareness that even environmentally friendly materials may play a role in transporting harmful chemicals through aquatic ecosystems.
Americium Sorption by Microplastics in Aqueous Solutions
Researchers investigated americium sorption by polyamide and polyethylene microplastics in both deionized water and seawater, tracing interactions with Am-241 isotope and examining the effects of pH and solution composition on sorption efficiency over time. The study found that microplastic type and aqueous matrix composition significantly influenced radionuclide uptake, with implications for the transport of radioactive contaminants in marine environments.
Removal of triclosan from water by adsorption on activated carbons and photodegradation
Researchers evaluated activated carbon adsorption and photodegradation for removing triclosan (TCS) from aqueous solutions, finding that adsorption capacity was maximized at pH 7 (up to 18.5 mg/g on Darco carbon) and that UV light at 254 nm achieved over 80% TCS removal, with a diffusional kinetic model adequately describing the adsorption process.
Microplastics and disposable face masks as “Trojan Horse” for radionuclides pollution in water bodies – A review with emphasis on the involved interactions
Researchers reviewed how microplastics and disposable face masks can adsorb radioactive particles (radionuclides like cesium-137 and uranium) and carry them through water environments, potentially concentrating radiation in the food chain. Key factors affecting this process include plastic type, particle size, and water chemistry, with some polymers showing adsorption partition coefficients as high as 2670 L/kg.
Functionalized Biochars for Enhanced Removal of Heavy Metals from Aqueous Solutions: Mechanism and Future Industrial Prospects
This review examined functionalized biochar materials as adsorbents for removing heavy metals from water, comparing surface modification strategies that enhance metal uptake capacity and selectivity. Functionalized biochars showed substantially improved adsorption performance over unmodified biochar and low-cost conventional materials.
Nano-Functionalized Magnetic Carbon Composite for Purification of Man-Made Polluted Waters
Researchers developed a nano-functionalized composite of thermally expanded graphite and bentonite clay for purifying water contaminated with oil products, heavy metals, radionuclides, and micro- and nanoplastics, using SEM, dynamic light scattering, radiometry, and atomic absorption spectrophotometry to assess performance. Applied to real radioactively contaminated water from the Chernobyl Exclusion Zone, the composite reduced organic substances by 10-15 times and achieved 81.4-98.8% extraction of cesium, strontium, cobalt, and manganese, reducing radioactivity by three orders of magnitude.
Factors influencing the adsorption of antibiotics onto activated carbon in aqueous media
This review summarized factors influencing antibiotic adsorption onto activated carbon in aqueous systems, covering activated carbon surface properties, antibiotic physicochemical characteristics, pH, ionic strength, and competing organic matter. Activated carbon showed high capacity for many antibiotics but performance varied substantially with water matrix composition and carbon type.
Biosorption of uranium from water on polymethylmethacrylate microplastic immobilized with Saccharomyces cerevisiae: a sustainable approach
Polymethylmethacrylate (PMMA) microplastics immobilized with Saccharomyces cerevisiae yeast cells were evaluated as biosorbents for uranium removal from water, demonstrating effective uptake and providing a sustainable microplastic-microbe system for radionuclide decontamination.
Adsorption performance of nanoplastics in carbon filtration column
This study investigated the adsorption and removal of polystyrene nanoplastics in a carbon filtration column under varying experimental conditions including pH and ionic strength. Results showed that activated carbon effectively retained polystyrene nanoparticles, with column performance depending significantly on water chemistry.
Removal of microfiber and surfactants from household laundry washing effluents by powdered activated carbon: kinetics and isotherm studies
Researchers tested powdered activated carbon as a way to remove microfibers and surfactants from household laundry wastewater. They found that activated carbon effectively adsorbed both contaminants, with the process following predictable chemical patterns. The study suggests that activated carbon filtration could be a practical solution for reducing the microfiber and chemical pollution that laundry discharge contributes to waterways.
Adsorption of heavy metal onto biomass-derived activated carbon: review
This review summarizes how activated carbon made from plant-based materials can be used to remove heavy metals from polluted water. Since microplastics in water often carry and concentrate heavy metals on their surface, improving our ability to filter these combined contaminants is important for protecting drinking water and human health.
Adsorption of Heavy Metals: Mechanisms, Kinetics, and Applications of Various Adsorbents in Wastewater Remediation—A Review
This review summarizes how different materials like activated carbon, agricultural waste, and nanomaterials can filter heavy metals out of contaminated water. Since microplastics in water can carry and concentrate heavy metals, improving water treatment is important for reducing human exposure to these combined pollutants.
Biofilm-enhanced adsorption of strong and weak cations onto different microplastic sample types: Use of spectroscopy, microscopy and radiotracer methods
Researchers used radiotracer, spectroscopy, and microscopy methods to show that biofilm-coated environmental plastics adsorb radioactive cesium and strontium — radionuclides associated with nuclear releases — though at rates much lower than natural sediments, confirming that plastics act as a minor but measurable sink for environmental radioactivity.
The adsorption of remazol red dye using porous activated carbon (PAC) from rice husk ash treated using alkali treatment
Researchers prepared porous activated carbon from rice husk ash using alkali treatment and tested its performance for removing Remazol Red dye, finding that sodium hydroxide-treated carbon at 1.0 M concentration achieved the highest removal efficiency of 84%.
Application of carbon-based adsorbents in the remediation of micro- and nanoplastics
This review summarizes how carbon-based materials like activated carbon, biochar, and carbon nanotubes can be used to remove micro and nanoplastics from water through adsorption. These materials are attractive because they are low-cost, eco-friendly, and can be modified to improve their plastic-capturing ability. Better water filtration materials could help reduce the amount of microplastics that reach people through drinking water and food preparation.
Removal efficiency and adsorption mechanisms of CeO2 nanoparticles onto granular activated carbon used in drinking water treatment plants
Researchers investigated how well granular activated carbon (GAC), commonly used in drinking water treatment, can remove cerium oxide nanoparticles. The study found that GAC achieved removal efficiencies of up to 75% in natural lake water, with adsorption driven primarily by electrostatic attraction and enhanced by the presence of divalent cations and natural organic matter.
Porous Material Synthesis and Chromium (VI) Applications
Researchers synthesized a carbonaceous porous material from sunflower shells using chemical activation and investigated its effectiveness for chromium(VI) removal from aqueous solutions. The study optimized activation parameters and evaluated adsorption performance, demonstrating the potential of agricultural waste-derived carbon for heavy metal remediation.
Modelling competitive adsorption of organic micropollutants onto powdered activated carbon in continuous stirred tank reactors for advanced wastewater treatment
This study examines a competitive adsorption model for removing organic micropollutants from wastewater using powdered activated carbon in continuous stirred tank reactors. Researchers validated the model approach across multiple full-scale treatment plants with external carbon recirculation. The findings provide a practical framework for predicting and optimizing the removal of trace organic contaminants during advanced wastewater treatment.
Mechanisms of Methylparaben Adsorption onto Activated Carbons: Removal Tests Supported by a Calorimetric Study of the Adsorbent–Adsorbate Interactions
This study examined how methylparaben (a common preservative in cosmetics and food) is removed from water by activated carbon, finding the process is effective across a range of conditions. Activated carbon-based treatment is relevant to removing not just chemical pollutants but potentially microplastic particles from water.