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Cookies enable us to provide the best experience possible and help us understand how visitors use our website. By browsing Filtration + Separation, you agree to our use of cookies. At the recent IAA 2019 Frankfurt Motor Show, Mann+Hummel exhibited technology for clean air in cities, a cabin filter system for electric cars and its E-mobility product range, which provides battery protection for electric cars. This year’s IAA saw the world premiere of Mann+Hummel’s integrated dust particle filters in co-operation with HBPO, a front-end module specialist. The filter element can now be integrated into previously unused space between the cooler and bumper in the front-end module. Braking causes wear on the brake disc and pads and creates fine dust. The passive brake dust particle filter from Mann+Hummel is fitted on the brake caliper and retains particle emissions directly at the brake. It fits into many types of installation space and can be adapted to different brake sizes and concepts. Also on show at IAA was Mann+Hummel’s FreciousSmart intelligent cabin filter system for electric cars, which operates the air conditioning system in recirculation mode, reducing energy consumption a...

White and wonderful? Microplastics prevail in snow from the Alps to the Arctic

Microplastics (MPs) are ubiquitous, and considerable quantities prevail even in the Arctic; however, there are large knowledge gaps regarding pathways to the North. To assess whether atmospheric transport plays a role, we analyzed snow samples from ice floes in Fram Strait. For comparison, we investigated snow samples from remote (Swiss Alps) and populated (Bremen, Bavaria) European sites. MPs were identified by Fourier transform infrared imaging in 20 of 21 samples. The MP concentration of Arctic snow was significantly lower (0 to 14.4 × 103 N liter−1) than European snow (0.19 × 103 to 154 × 103 N liter−1) but still substantial. Polymer composition varied strongly, but varnish, rubber, polyethylene, and polyamide dominated overall. Most particles were in the smallest size range indicating large numbers of particles below the detection limit of 11 μm. Our data highlight that atmospheric transport and deposition can be notable pathways for MPs meriting more research. Plastic pollution is a problem of growing environmental concern, because production rates have increased to 380 million metric tons (MT) year−1 in 2015 (1), and annual waste production is projected to rise to 3.4 bil...