We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Removal of microplastics from water by magnetic nano-Fe3O4
AI summary Read the abstract
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.
Microplastics (MPs) have been widely detected in aquatic environments, and become emerging contaminants of growing concern. It is urgently needed to explore how to effectively remove MPs from water. This study first established an alternative method of removing MPs by magnetic nano-FeO. Results showed that 1.3 g·L nano-FeO and 150 min treatments caused optimal magnetization of MPs via surface absorption. Then, magnetized MPs in water can be conveniently removed by suction of the magnet. The average removal rate of four common types of MPs including polyethylene, polypropylene, polystyrene and polyethylene terephthalate in size of approximately 200-900 μm was 86.87 ± 6.92%, 85.05 ± 4.70%, 86.11 ± 6.21%, and 62.83 ± 8.34%, respectively. The removal rate varied among polymer- and size-different MPs, and was positively related to the density of nano-FeO absorbed on MP surfaces. In addition, the removal rate of MPs in artificial seawater was relatively high in comparison to pure water. Furthermore, the established approach was effectively applied to remove MPs in environmental water bodies including river water, domestic sewage, and natural seawater, with the removal rate of higher than 80%. Altogether, this study provided a novel and simple removal approach to remove MPs in water, which has a certain application prospect.
More Papers Like This
Testing an Iron Oxide Nanoparticle-Based Method for Magnetic Separation of Nanoplastics and Microplastics from Water
AI summary Read the abstract
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
AI summary Read the abstract
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.
Magnetic Removal of Micro‐ and Nanoplastics from Water—from 100 nm to 100 µm Debris Size
AI summary Read the abstract
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 of Micro and Nano Plastics from Water Using Magnetic Nanoparticles
AI summary Read the abstract
Researchers evaluated surface-functionalized magnetic nanoparticles for removing micro- and nanoplastics from water, optimizing pH, dosage, contact time, and agitation to maximize removal efficiency, and found the approach outperforms conventional treatment while offering rapid magnetic separation and nanoparticle reusability.
Comparative Performance of Magnetic Iron Oxide Nanoparticles in Removing Polyethylene Micro- and Nanoplastics from Model Water Systems
AI summary Read the abstract
Tiny iron oxide particles, made using three different lab methods and sometimes coated with other chemicals, were tested for removing polyethylene micro- and nanoplastics from water samples in the lab. Removal success ranged from about 34% to 93%, with uncoated particles made by one method and coated particles made by another method performing best.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.