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Capturing microfibers – marketed technologies reduce microfiber emissions from washing machines
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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.
Microfibers are a common type of microplastic. One known source of microfibers to the environment is domestic laundering, which can release thousands of fibers into washing machine effluent with every wash. Here, we adapted existing methods to measure the length, count and weight of microfibers in laundry effluent. We used this method to test the efficacy of two technologies marketed to reduce microfiber emissions: the Cora Ball and Lint LUV-R filter. Both technologies significantly reduced the numbers of microfibers from fleece blankets in washing effluent. The Lint LUV-R captured an average of 87% of microfibers in the wash by count, compared to the Cora Ball which captured 26% by count. The Lint LUV-R also significantly reduced the total weight and average length of fibers in effluent. While further research is needed to understand other sources of microfiber emissions, these available technologies could be adopted to reduce emissions from laundering textiles.
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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 evaluated microfiber generation and discharge from household washing and drying cycles using standardized protocols with polyester fleece garments, testing the effectiveness of three commercial point-of-use filtration systems at reducing microfiber emissions from wash wastewater.
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Researchers quantified synthetic microplastic fibre emissions from five sequential machine washes and tumble dryings of synthetic fabrics, finding that fibre release decreased with successive washes and that two commercial in-machine fibre traps varied substantially in their collection efficiency, with implications for reducing domestic microplastic emissions.
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.