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Rice University leads breakthrough in eco-friendly removal of toxic ‘forever chemicals’ from water
Rice University researchers, in collaboration with international partners, have developed the first eco-friendly technology to rapidly capture and destroy toxic “forever chemicals” (PFAS) in water. The findings, recently published in Advanced Materials, mark a major step toward addressing one of the world’s most persistent environmental threats.
PFAS, short for per- and polyfluoroalkyl substances, are synthetic chemicals first manufactured in the 1940s and used in products ranging from Teflon pans to waterproof clothing and food packaging. Their ability to resist heat, grease and water has made them valuable for industry and consumers. But that same resistance means they do not easily degrade, earning them the nickname “forever chemicals.”
Today, PFAS are found in water, soil and air around the globe. Studies link them to liver damage, reproductive disorders, immune system disruption and certain cancers. Efforts to clean up PFAS have struggled because the chemicals are difficult to remove and destroy once released into the environment.
The Rice-led team’s innovation centers on a layered double hydroxide (LDH) material made from copper and aluminum, first discovered by Kim as a graduate student at KAIST in 2021. While experimenting with these materials, Chung discovered that one formulation with nitrate could adsorb PFAS with record-breaking efficiency.
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