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Researchers in the US have developed bio-based air filters that they claim can capture toxic chemicals that current filters can’t. The scientists, at Washington State University (WSU), say that these inexpensive soy filters could lead to better air purification and improve air quality.
(...) Air filters can be fitted to items such as air conditioning units (in vehicles and buildings) to filter air before it is inhaled. They can also be installed at the point of production – for example, on factory chimneys and car exhausts – to capture pollutants before they are released. Most air filters consist of a mesh of plastic fibres that physically filter particulate matter – PM2.5 and larger PM10 particles. But these particles are not the only pollutants of concern.
(...) Air filters can be fitted to items such as air conditioning units (in vehicles and buildings) to filter air before it is inhaled. They can also be installed at the point of production – for example, on factory chimneys and car exhausts – to capture pollutants before they are released. Most air filters consist of a mesh of plastic fibres that physically filter particulate matter – PM2.5 and larger PM10 particles. But these particles are not the only pollutants of concern.
