AUCKLAND, Aug 21 — Nicknamed “forever chemicals,” PFAS are substances that are dangerous to human and animal health and also contaminate soil across much of the planet. To...
AUCKLAND, Aug 21 — Nicknamed “forever chemicals,” PFAS are substances that are dangerous to human and animal health and also contaminate soil across much of the planet. To tackle this scourge, researchers in New Zealand have developed a promising method that could eliminate virtually all PFAS from firefighting foam.
Toxic to human and animal health, as well as to the planet, “forever chemicals” show up in many aspects of our daily lives: in paints, varnishes, textiles, food packaging and even toilet paper! While most of these per- and polyfluoroalkyl chemical compounds come into our lives via factories, they can also be found in firefighting foams. It is precisely this type of PFAS that scientists at New Zealand’s University of Auckland have decided to tackle.
What’s their secret? “Ball milling” using metal balls capable of grinding solid matter at extremely high speed. In collaboration with the US Environmental Protection Agency, the researchers tested their technique in the lab, using soil samples taken from a disused military airbase used as a firefighting training area., the results of their work suggest that ball milling was able to destroy almost all of the PFAS present in the samples of the soil from the military base where they were taken.
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