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The magnetic removal of PFAS from water − from molecules to microplastics
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Scientists have developed tiny magnetic particles that can grab onto "forever chemicals" (PFAS) and even microplastics in water, then be pulled out with a magnet, removing up to 95% of contamination. This matters because PFAS are linked to health problems like cancer and hormone disruption, and current water treatment struggles to filter them out, especially at low levels; this reusable magnetic approach worked in real-world settings like drinking water, river water, and wastewater, suggesting a practical path toward cleaner water for communities dealing with PFAS pollution.
Per- and polyfluoroalkyl substances (PFAS), known as “ forever chemicals ”, pose a persistent environmental threat due to their chemical stability, bioaccumulation and widespread presence in water sources. Traditional treatment methods are often limited to remove PFAS, especially at low concentrations or in complex mixtures. This study presents functionalized superparamagnetic iron oxide nanoparticles (SPIONs) to capture various PFAS, including amphiphilic and neutral compounds or even microplastics, from water. By tuning the SPION surface chemistry with a self-assembled monolayer (SAM) for electrostatic and hydrophobic interactions, we achieved high removal efficiencies in diverse conditions, including a contaminated drinking water source, soil wash-off, river water and laundry wastewater. Regenerable hydrophobic SPIONs maintained high performance, reducing PFAS levels up to 95.4%. These findings support SPIONs as a scalable, effective solution for broad-range PFAS removal even in complex environments. Their applicability across different matrices underscores their global relevance to mitigate PFAS pollution in industrial effluents, wastewater streams, and natural ecosystems.
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Scalable room-temperature synthesis of a MOF-based magnetic adsorbent for rapid simultaneous removal of PFAS and micro-nanoplastics
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Scientists have created a magnetic sponge-like material that can grab both microplastics and "forever chemicals" (PFAS) out of water at the same time—two pollutants that often team up to harm human health, since plastics can carry toxic chemicals into our bodies. In testing, it removed over 95% of plastic particles (even tiny ones smaller than a human cell) and over 85% of a tough, long-lasting PFAS chemical in under an hour, and it worked in real wastewater and can be reused multiple times. This matters because current water treatments struggle to catch these pollutants together, especially quickly enough for real-world use,
Remediation of Urban Water Contaminated by Microplastics Using Magnetic Nanoparticles and Biosurfactant
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Scientists created a magnetic cleanup tool—tiny iron particles coated with a natural soap-like substance—that pulled 95% of microplastic pollution out of contaminated water samples in lab tests. Because the particles are magnetic, they can be collected and reused afterward, preventing them from becoming a new source of pollution themselves. This matters because microplastics in our water supply are a growing health concern, and this low-cost method could one day be added to city water treatment systems to help filter them out before they reach our taps.
Enhanced removal of microplastics from wastewater hydrological pathways using a magnetically recoverable Fe 3 O 4 /carbon black nanocomposite
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Scientists developed a new magnetic material that can remove nearly 99% of tiny plastic particles from wastewater before it gets released into rivers and oceans. The material works like a magnet to grab plastic pieces from dirty water, then can be pulled out and reused. This could help stop microplastics from building up in our water supply and food chain, where they may pose health risks to humans.
Efficient removal of microplastics from aqueous environment by magnetic MOFs: Performance & mechanism
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Scientists created a magnetic sponge-like material that can soak up tiny plastic particles from water and then be pulled out easily with a magnet for reuse—tackling two big problems at once: removing microplastics effectively and making cleanup practical at scale. This matters because microplastics are increasingly found in our drinking water and food, and better removal tools like this could help reduce our exposure to these particles, whose long-term health effects scientists are still studying.
Two Dimensional MOF Encapsulating Magnetic Char Beads for Removal of Microplastic and Dissolved Arsenic From Aqueous System
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Scientists created a special magnetic material that can pull tiny plastic particles (microplastics) and toxic arsenic out of water at the same time, working almost instantly (within 15 minutes) and staying nearly 100% effective even after being reused multiple times. This matters because microplastics can act like tiny taxis for harmful metals like arsenic, sneaking them into our water supply, so having a fast, reliable way to filter out both contaminants together could lead to cleaner drinking water and better protection against these combined health risks.
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