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61,005 resultsShowing papers similar to The use of magnetically modified microplastics in environmental studies
ClearTesting 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.
Magnetic Extraction of Microplastics from Environmental Samples
A magnetic extraction method was developed using hydrophobic iron nanoparticles that bind to plastic surfaces, achieving 92% recovery of 10–20 μm polyethylene and polystyrene beads and 84–93% recovery of six polymer types from seawater and sediment. The method offers a practical, adaptable approach to extracting microplastics from complex environmental matrices without the limitations of density-based separation.
Exploring the Effects of a Magnetic Plastic in the Identification and Recycling of Improperly Disposed of Plastic
Researchers tested adding small amounts of non-toxic iron powder to plastic to make it magnetic, which could help identify and remove plastic waste from the environment more easily. They found that magnetic plastic could be detected faster than regular plastic when using magnets to search through sand and water. This approach might help reduce the amount of microplastics (tiny plastic pieces) that end up in our food and water, though it would need to be adopted worldwide to make a real difference.
Removal 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.
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.
A novel method for magnetic labelling and extraction of small-sized microplastics (4 μm) from soil
Researchers developed a magnetic labelling approach to extract small microplastics (4 µm) from soil by binding Fe3O4 magnetic nanoparticles to the microplastic surface through controlled heating, then using magnetic separation to isolate particles. The method achieved a recovery rate of approximately 92% under optimized conditions, offering a practical solution for quantifying sub-10 µm microplastics from complex soil matrices.
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.
Emerging Applications of Magnetic Nanomaterials in the Remediation of Microplastics from the Aquatic Environment
This review examined the use of magnetic nanomaterials for removing microplastics from aquatic environments, summarizing how magnetic separation can efficiently capture plastic particles for remediation purposes. The authors highlight magnetic nanomaterials as a promising and scalable tool for microplastic cleanup.
A novel method for magnetic labelling and extraction of small-sized microplastics (4 μm) from soil
Researchers developed a novel magnetic labelling method to improve extraction efficiency of small microplastics (4 µm polystyrene spheres) from soil by heating particles with Fe3O4 magnetic nanoparticles to embed nanoparticles in the microplastic surface, enabling magnetic separation. Optimizing the incubation at 90°C for 2.5 hours achieved a recovery rate of 91.67% from water matrices, demonstrating potential for extracting sub-10 µm particles that conventional density separation methods miss.
Advances in magnetic materials for microplastic separation and degradation
This review examines how magnetic materials can be used to capture and break down microplastics in water. Different types of magnetic particles, including iron nanoparticles and tiny magnetic robots, can attract and remove microplastics with high efficiency. These technologies could be important for cleaning up microplastic-contaminated water supplies and reducing human exposure through drinking water.
Magnetic labelling and extraction of micrometer-sized microplastics from soil
Researchers developed a magnetic labeling and extraction method for micrometer-sized microplastics from soil, exploiting the glass transition of polystyrene by heating particles to embed iron oxide nanoparticles on their surface, allowing efficient magnetic separation of small MPs from complex soil matrices.
Magnetic labelling and extraction of micrometer-sized microplastics from sandy soil
Researchers developed a magnetic labelling technique for extracting micrometer-sized microplastics (4 µm) from sandy soil by exploiting the glass transition of polystyrene to embed iron oxide magnetic nanoparticles on MP surfaces, enabling efficient separation using a magnetic field.
Adsorption Ability of Soft Magnetic FeCo Alloys for Microplastics
Researchers synthesized soft magnetic FeCo alloy nanoparticles loaded onto carboxymethyl cellulose and systematically characterized their ability to adsorb polyethylene microplastics from water, finding effective magnetic-assisted removal that could be applied for environmental microplastic remediation.
Microplastics and other pollutants in the aquatic environment: study of interactions and new removal strategies
Researchers evaluated iron magnetic nanoparticles (MNPs) with varying surface modifications -- bare Fe3O4, TEOS-coated, and TEOS+MPS-coated -- for removing four types of microplastics (Nylon 6, PTFE at two sizes, and PMMA) from water, assessing how surface chemistry and synthesis time affect removal efficiency.
Magnetic separation and degradation approaches for effective microplastic removal from aquatic and terrestrial environments
This review covers methods for removing microplastics from water and soil environments using magnetic separation and degradation technologies. Researchers describe how microplastics can be captured using magnetic particles and then broken down through biodegradation, advanced oxidation, or electrochemical processes. The study highlights these combined approaches as promising strategies for addressing microplastic pollution across both aquatic and land-based ecosystems.
Mussel Adhesive Protein-Assisted Magnetic Recovery of Microplastics from Aquatic Environments
Researchers developed a mussel adhesive protein-assisted magnetic recovery system for capturing and removing microplastics from aquatic environments, demonstrating that the bio-inspired magnetic coating enabled efficient MP binding and retrieval using external magnetic fields.
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.
Experimental investigation of inertial fibres and disks in a turbulent boundary layer
This study investigated the use of magnetic iron oxide nanoparticles as a capture technology for removing microplastics from water, achieving over 90% removal efficiency for polystyrene and polyethylene particles using an external magnetic field. Recyclability of the sorbent was demonstrated over 10 cycles.
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.
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.
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.
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.
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.
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.