We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Application of Iron Oxide-Coated Membranes in Permeable Block Systems for Advanced Removal of Micro- and Nanoplastics
Summary
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.
The increasing prevalence of microplastics (MPs) and nanoplastics (NPs) in aquatic environments has raised significant environmental and public health concerns, necessitating the development of effective removal technologies. This study explores the application of iron oxide-coated membrane structures integrated into permeable block systems for the effective removal of MPs and NPs from aqueous media. Iron oxide nanoparticles (IONPs) were synthesized via a simple and cost-effective chemical precipitation method. In batch experiments, the synthesized IONPs achieved removal efficiencies exceeding 95% within 20 minutes. Afterward, IONPs were uniformly deposited onto membrane surfaces using a spray-coating technique. Removal efficiencies were evaluated for both MPs and NPs across a range of particle sizes and compositions. Results demonstrated that the IONPs coating significantly enhanced the capture efficiency compared to uncoated membranes. Furthermore, the coated membranes demonstrated stable performance over multiple reuse cycles with minimal decline in efficiency. These findings suggest that iron oxide-coated membranes integrated into permeable block systems offer a promising, scalable strategy for mitigating plastic pollution in water treatment and urban runoff management applications.
Sign in to start a discussion.
More Papers Like This
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.
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.