Researchers from Drexel University have found a way to destroy stubbornly resilient toxic compounds, ominously dubbed “forever chemicals,” that have contaminated the drinking water of millions across the United States.
Researchers from Drexel University have found a way to destroy stubbornly resilient toxic compounds, ominously dubbed “forever chemicals,” that have contaminated the drinking water of millions across the United States.
These chemicals, commonly called PFAS — a shortening of per- and polyfluoroalkyl substances, were used for some 60 years as coatings for nonstick pans and waterproof clothing and in fire-fighting foams. In the last two decades concerns about health risks associated with exposure to PFAS — from cancer and thyroid problems to low birthweights and high blood pressure — have led to federal bans, monitoring mandates and massive remediation efforts.
But eliminating these chemicals — originally designed to resist high-temperatures of fuel-driven fires — from drinking water has proven to be nearly impossible.
“The carbon-fluoride chemical bonds in PFAS compounds are extremely stable, so it’s impossible to break down these compounds using standard treatment methods,” said Christopher Sales, PhD, an associate professor of environmental engineering at Drexel who studies degradation of environmental contaminants.
Read more at Drexel University
Image: Using a gliding arc plasmatron, Drexel University researchers can create a vortex of cold plasma with enough energy to break apart PFAS compounds in water. (Credit: Drexel University)
