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Papers
61,005 resultsShowing papers similar to Application of Iron Oxide-Coated Membranes in Permeable Block Systems for Advanced Removal of Micro- and Nanoplastics
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.
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.
Enhanced retention of small-sized microplastics by iron-containing sand filtration system: Effectiveness and mechanisms
Researchers tested iron-loaded sand (IS) as an enhanced filtration medium for removing small microplastics from drinking water by exploiting electrostatic attraction between iron oxide coatings and negatively charged MPs. IS dramatically outperformed bare sand, reducing effluent mass percentages from ~53% to 0.79% for 200 nm MPs and from ~39% to 2.81% for 1000 nm MPs, while maintaining performance across extended filtration runs.
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.
Plastics adsorption and removal by 2D ultrathin iron oxide nanodiscs: From micro to nano
Researchers developed ultra-thin magnetic iron oxide nanodiscs for removing micro- and nanoplastics from water. The study found that these nanodiscs achieved high adsorption capacity through electrostatic and magnetic forces, and maintained over 90% removal efficiency after five reuse cycles, offering a cost-effective approach for treating plastic-contaminated wastewater.
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.
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.
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.
Synthesis and Evaluation on the Performance of Ferrofluid in Wastewater Treatment
Researchers evaluated iron oxide magnetic nanoparticles (ferrofluids) as a water treatment technology capable of removing turbidity, metals, and organic contaminants. Magnetic nanoparticles that can also capture microplastics from water represent a promising approach for more comprehensive water purification.
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.
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.
Magnetic and electrical techniques for the effective removal of microplastics and nanoplastics
This review covers the latest advances in using magnetic and electrical methods to remove microplastics and nanoplastics from the environment, including magnetic iron-based and carbon-based materials, magnetic micro-robots, electrocoagulation, electrosorption, and electrokinetic separation. These physical and electrochemical approaches are gaining traction as efficient, chemical-free alternatives to conventional filtration. The review helps identify which removal technologies are most promising for large-scale water treatment applications.
Efficient Removal of Micro-Sized Degradable PHBV Microplastics from Wastewater by a Functionalized Magnetic Nano Iron Oxides-Biochar Composite: Performance, Mechanisms, and Material Regeneration
Researchers developed a magnetic iron oxide-biochar composite capable of removing biodegradable PHBV microplastics from wastewater with over 98% efficiency. The material worked through a combination of surface adsorption and magnetic separation, maintained performance across a wide pH range, and retained over 92% removal efficiency after four regeneration cycles.
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.
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.
Enhanced removal of microplastics from wastewater treatment plants by a novel magnetic filter
This study developed a novel magnetic adsorption approach to enhance microplastic removal in wastewater treatment plant effluents, achieving high removal efficiency across a range of particle sizes and polymer types.
Nanonet trapping for effective removal of nanoplastics by iron coagulation
Scientists developed a new iron-based water treatment method that creates tiny net-like structures capable of trapping and removing nanoplastics that conventional water treatment cannot filter out. This approach works effectively in real-world water samples and could be adopted by existing water treatment plants, offering a practical way to reduce nanoplastic contamination in drinking water.
Adsorptive removal of micron-sized polystyrene particles using magnetic iron oxide nanoparticles
Researchers demonstrated that magnetic iron oxide nanoparticles can effectively adsorb and remove micron-sized polystyrene microplastics from water, offering a magnetically recoverable approach to microplastic remediation.
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.
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.
Superhydrophobic and Sustainable Nanostructured Powdered Iron for the Efficient Separation of Oil-in-Water Emulsions and the Capture of Microplastics
This study developed and demonstrated a superhydrophobic powdered iron material that can efficiently separate oil from water and capture microplastic fibers through a single filtration process. This dual-function material could be a cost-effective and sustainable tool for removing two major ocean pollutants simultaneously.
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.
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.
An iron “nano-fishnet” for the rapid removal and surface clean-up of micro/nanoplastics from seawater
Researchers developed a magnetic iron nano-fishnet made from alkylated nanoscale zerovalent iron grown on cellulose nanofibers that rapidly captures and removes micro- and nanoplastics from seawater, offering a promising remediation tool for marine plastic pollution.