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Hydro Cyclonic Separation of Polyester Microfibers from Washing Machine Wastewater
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Researchers investigated using a hydro cyclone separator to capture polyester microfibers from washing machine wastewater before they enter sewage treatment, finding it a potentially viable low-energy method to reduce microfiber pollution.
Clothing made from synthetic materials shed fibers in washing machines, and these fibers find their way into the effluent water. These fibers can absorb toxic materials in wastewater treatment plants and can then carry these toxins into other aquatic environments. It’s believed that a hydro cyclone could be scaled down enough to fit into a washing machine and could be used to filter out up to 80% of the microparticles from the effluent water. It’s proposed to investigate if a hydro cyclone can be used for this application. The overall goal was for the hydro cyclone to concentrate the micro plastics into a semi solid sludge. A hydro cyclone design and reservoir were designed and tested to show a system efficiency of up to 90%, and the reservoir was able to collect the particles in such a way that they could be disposed of in the trash.
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Researchers improved a microfiber filter designed for domestic washing machines to more effectively capture synthetic microfibers and microplastics released during laundry cycles, testing filter performance across different fabric types and washing conditions. The enhanced filter design achieved higher capture rates of microfibers compared to existing solutions, representing a practical household-level intervention to reduce microplastic emissions to wastewater.
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Researchers tested three commercially available microfiber capture devices installed in washing machines and found that they significantly reduced the number and mass of microfibers released in laundry effluent. The results support the potential of in-machine filtration as a practical intervention to reduce microfiber pollution from domestic laundering.
Development and Performance Evaluation of a Filtration System for Washing Machines to Reduce Microfiber Release in Wastewater
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A newly developed filtration system for washing machines achieved 64% capture efficiency for microfibers shed from polyester clothing during laundering, matching or exceeding other commercial and prototype microfiber filters tested. Since synthetic fabric washing is the primary source of primary microplastics entering oceans, scalable household filtration solutions like this could meaningfully reduce the volume of fibers reaching wastewater systems and marine environments.
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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.