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61,005 resultsShowing papers similar to Microplastics and other pollutants in the aquatic environment: study of interactions and new removal strategies
ClearRemoval of microplastics from water by magnetic nano-Fe3O4
Researchers developed a method for removing microplastics from water using magnetic iron oxide nanoparticles that attach to plastic surfaces, allowing the particles to be pulled out with a magnet. The technique achieved removal rates above 80% for common microplastic types in environmental water samples including river water, sewage, and seawater, suggesting a practical approach for water treatment.
Polystyrene microplastics removal from aqueous solutions by magnetic iron nanoparticles
Researchers tested magnetic iron oxide (Fe₃O₄) nanoparticles for removing polystyrene microplastics from water, systematically optimizing concentration, dosage, contact time, and pH, and found effective microplastic removal through adsorption interactions that could be leveraged for environmental remediation.
Efficient magnetic capture of PE microplastic from water by PEG modified Fe3O4 nanoparticles: Performance, kinetics, isotherms and influence factors
Researchers developed PEG-modified Fe3O4 magnetic nanoparticles that efficiently capture polyethylene microplastics from water with a maximum adsorption capacity of 2,203 mg/g, maintaining high removal efficiency across varying environmental conditions.
Effect of aggregation behavior on microplastic removal by magnetic Fe3O4 nanoparticles
Researchers investigated how magnetic iron oxide nanoparticles can remove nanoscale microplastics from water. They found that 83 to 93 percent of the plastic particles could be captured within one hour, with removal efficiency strongly linked to how the nanoparticles and plastics clump together. The study shows that water acidity and salt levels significantly influence the process, offering practical guidance for deploying magnetic cleanup technologies.
Testing an Iron Oxide Nanoparticle-Based Method for Magnetic Separation of Nanoplastics and Microplastics from Water
Researchers tested iron oxide nanoparticles with hydrophobic coatings as a method for magnetically separating micro- and nanoplastics from water. The approach achieved 100% removal of larger microplastics and nearly 90% removal of nanoplastics using a simple permanent magnet, suggesting a viable method for water purification and environmental monitoring.
Removal of Micro and Nanoplastics from Water Using Magnetic Nanoparticles: A Review
This review evaluates the use of magnetic nanoparticles as a technology for removing micro- and nanoplastics from water. Researchers found that magnetic nanoparticles can effectively capture plastic particles through surface interactions and be easily separated from water using magnets. The study suggests this approach offers a promising and energy-efficient method for cleaning microplastic-contaminated water, though challenges remain in scaling it for real-world applications.
Remediation strategies for micro/nanoplastic pollution using magnetic nanomaterials
This review surveys recent developments in using magnetic nanomaterials, such as iron oxide nanoparticles and magnetic composites, to remove micro- and nanoplastics from water and soil. These materials can capture plastic particles through adsorption, help clump them together for removal, or even break them down, and they can be magnetically recovered for reuse. The study highlights that magnetic nanomaterials offer a promising approach for cleaning up plastic pollution, though challenges remain in scaling up for real-world use.
Electrostatic Interactions Override Surface Area Effects in Size-Dependent Adsorptive Removal of Microplastics by Fe3O4 Nanoparticles
This study investigated how the size and surface charge of magnetic nanoparticles affect their ability to adsorb and remove microplastics from water. Electrostatic interactions between particle surface charge and MP surfaces overrode simple surface area effects, providing design principles for more effective magnetic nanoparticle-based MP remediation.
Removal and Degradation of Microplastics Using the Magnetic and Nanozyme Activities of Bare Iron Oxide Nanoaggregates
Researchers developed bare iron oxide nanoaggregates that both remove and catalytically degrade common microplastics with nearly 100% efficiency, achieving full extraction at just 1% of the microplastic mass through combined magnetic and nanozyme activities.
Effective removal of Micro- and nanoplastics from water using Iron oxide nanoparticles: Mechanisms and optimization
Researchers developed a magnetic separation method using iron oxide nanoparticles to remove micro- and nanoplastics from water, achieving up to 95% removal efficiency within just 20 minutes. The technique works through hydrophobic interactions between the iron oxide particles and plastic surfaces, and was particularly effective for smaller nanoplastics. The method offers a relatively simple, rapid, and cost-effective approach to filtering plastic particles from contaminated water.
A Sustainable Method for Removal of the Full Range of Liquid and Solid Hydrocarbons from Water Including Up‐ and Recycling
Researchers developed iron oxide nanoparticles coated with alkyl phosphonic acid that can bind to a wide range of hydrocarbons — from dissolved oils to plastic particles — regardless of molecular weight or size, and can then be magnetically separated from water. The approach offers a promising tool for removing plastic pollution from wastewater, including microplastics that are too small for conventional filtration to capture.
Magnetic Extraction of Weathered Tire Wear Particles and Polyethylene Microplastics
Researchers developed a hydrophobic magnetic nanocomposite that can rapidly extract both polyethylene microplastics and tire wear particles from freshwater using magnets, offering a low-cost method for removing these pollutants from environmental water samples.
Removal of microplastics in water: Technology progress and green strategies
Researchers reviewed existing technologies for removing microplastics from water, including filtration, magnetic separation, chemical coagulation, and biodegradation. Each method has significant trade-offs — filtration is costly, chemical approaches risk secondary pollution, and biological methods are slow — pointing to the need for integrated, environmentally friendly strategies that combine multiple approaches.
Advanced green capture of microplastics from different water matrices by surface-modified magnetic nanoparticles
Researchers engineered magnetic nanoparticles with specialized surface coatings that attract and capture microplastics from water through electrostatic and molecular forces, allowing the plastic-laden particles to be pulled out with a magnet in about 20 minutes. This approach offers a faster and greener alternative to current water treatment methods for removing microplastic contamination.
Microplastic transport dynamics and the path forward with magnetic nanoparticle based solutions
This review summarizes the widespread distribution of microplastics in aquatic systems and evaluates the use of magnetic nanoparticles as a solution for removing them from water. Magnetic nanoparticles can bind to microplastics and then be separated from water using magnets, offering a promising and efficient cleanup method. Effective microplastic removal from water is important because contaminated drinking water and seafood are major sources of human microplastic exposure.
Application of Iron Oxide-Coated Membranes in Permeable Block Systems for Advanced Removal of Micro- and Nanoplastics
This study evaluated iron oxide-coated membranes integrated into permeable block systems for removing microplastics and nanoplastics from aqueous media. The iron oxide coating enhanced MP capture through electrostatic and magnetic interactions, achieving higher removal efficiencies than uncoated membranes.
Magnetic Removal of Micro‐ and Nanoplastics from Water—from 100 nm to 100 µm Debris Size
Researchers demonstrated a magnetic method for removing micro- and nanoplastics from water using iron oxide nanoparticles that attract oppositely charged plastic particles. The technique was effective across a wide size range, from 100 nanometers to 100 micrometers, and worked with multiple plastic types. The study suggests that magnetic removal could help address the gap in current wastewater treatment, which struggles to capture the smallest plastic particles.
Efficiency and mechanism of micro- and nano-plastic removal with polymeric Al-Fe bimetallic coagulants: Role of Fe addition
Researchers investigated polymeric Al-Fe bimetallic coagulants for removing micro- and nanoplastics from drinking water, finding that iron addition enhanced nanoplastic removal efficiency through improved charge neutralization and floc formation mechanisms.
Application of Surface-Modified Natural Magnetite as a Magnetic Carrier for Microplastic Removal from Water
Researchers modified natural magnetite — a common iron mineral — with a hydrophobic chemical coating so it would stick to plastic particles in water, then used magnets to pull everything out. When applied to six common plastic types including polyethylene and polystyrene, finely-ground treated magnetite removed over 90% of the microplastics. This low-cost, naturally-sourced approach could offer a scalable method for cleaning microplastics from water supplies.
Magnetic polymeric ferric magnesium chloride: Fe species distribution, characterization and coagulation removal of microplastics in water
Researchers developed a magnetic polymeric ferric magnesium chloride (MPFMC) coagulant and characterized its iron species distribution and physicochemical properties for use in removing microplastics from water. The study elucidated the coagulation mechanism by which MPFMC captures microplastic particles, demonstrating its potential as an efficient water treatment agent.
Magnetic polymeric composites: potential for separating and degrading micro/nano plastics
Researchers reviewed how magnetic composite materials can be used to attract, capture, and chemically break down microplastics and nanoplastics in wastewater, finding that combining magnetic separation with advanced oxidation or photocatalysis offers one of the most promising approaches for removing these persistent plastic pollutants from water.
Environmental aspects of restoring the environment: nanotechnology for removing micro and nanoplastics from water
Researchers developed a plasma chemical water purification method that combines modified humic substances with high-voltage electrical discharge to aggregate and magnetically remove micro- and nanoplastics from contaminated water. Tested on wastewater from a printing facility, the method outperformed conventional sorption or plasma treatment alone and showed promise for simultaneously removing plastics, heavy metals, and organic pollutants. This offers a potentially scalable technology for treating industrial wastewater sources that are currently releasing nanoplastics to the environment.
Sustainable Strategy for Microplastic Mitigation: Fe3O4 Acid-Functionalized Magnetic Nanoparticles for Microplastics Removal
Scientists created magnetic nanoparticles coated with citric acid that can remove up to 80% of common microplastics (polyethylene and polypropylene) from water using a simple magnetic separation process. The material can be reused up to five times while still maintaining over 50% removal efficiency. This type of reusable, low-impact technology could help water treatment facilities better remove microplastics, reducing the amount that reaches drinking water supplies.
Current status of microplastics and nanoplastics removal methods: Summary, comparison and prospect
This review comprehensively summarized and compared current methods for removing micro- and nanoplastics from water, covering physical, chemical, and biological approaches while identifying key challenges and future directions for improving removal efficiency.