A University of Missouri researcher has developed a cost-effective and sustainable method for removing PFAS, or 'forever chemicals,' from drinking water. The technique involves heating PFAS with granular activated carbon at a relatively low temperature, achieving a high level of PFAS mineralization.
A researcher at the University of Missouri has discovered a groundbreaking method to remove so-called ' forever chemicals ' known as PFAS from drinking water . Per- and polyfluoroalkyls ( PFAS ) are a group of industrial chemicals used in a wide range of products, including cosmetics, carpeting, non-stick cookware, stain-resistant fabrics, firefighting foams, food packaging, and waterproof clothing.
Their persistence in the environment, along with their potential health effects, has raised significant concerns. Studies have linked PFAS exposure to decreased fertility, developmental delays in children, and an increased risk of certain cancers. These chemicals are incredibly durable, taking hundreds or even thousands of years to break down naturally. For the past decade, researchers have been actively searching for effective ways to remove PFAS from the environment or at least degrade them into harmless compounds. Feng 'Frank' Xiao, an associate professor in Mizzou's College of Engineering, and his team have made a significant advancement in this field. Xiao's innovative method utilizes readily available materials and common tools. Instead of relying on expensive organic solvents or extremely high temperatures, the team heated PFAS with granular activated carbon (GAC) at 572 degrees Fahrenheit. GAC, a material composed of granules derived from coal, wood, or other carbon-rich sources, is commonly used for filtering contaminants from water and air. This relatively simple process resulted in a remarkable 90% mineralization of the PFAS, transforming the 'forever chemicals' into harmless, inorganic fluorine. Previous methods requiring temperatures exceeding 1292 degrees Fahrenheit, high pressure, or solvents have proven to be less efficient and sustainable.Xiao's discovery holds immense potential for managing PFAS-contaminated solid wastes, biosolids, and spent adsorbent media, addressing a major concern for farmers and communities. 'In the Midwest, we use a lot of herbicides and give animals a lot of pharmaceuticals,' Xiao said. 'These substances can contain high amounts of PFAS. Through this new removal method, we can drastically reduce the compounds' presence in our lives.' This breakthrough technology could significantly improve water quality and contribute to a healthier environment.
PFAS Forever Chemicals Drinking Water Granular Activated Carbon Water Treatment Environmental Remediation University Of Missouri Feng 'Frank' Xiao
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