A Revolutionary Solution for Destroying PFAS using Hydrogen and UV Light
In a groundbreaking development, researchers from the University of California, Riverside, have discovered a method to chemically break down harmful PFAS (per- and poly-fluoroalkyl substances) found in drinking water, rendering them harmless.
The innovative process involves infusing contaminated water with hydrogen and then subjecting it to high-energy, short-wavelength ultraviolet light. This one-two punch polarizes water molecules and catalyzes chemical reactions to effectively destroy the persistent PFAS compounds. The result is a near-complete molecular destruction, with increased efficiency from 10% to nearly 100% compared to traditional ultraviolet water-treatment methods. Notably, this method also generates no undesirable byproducts or impurities.
The authors, led by Haizhou Liu, an associate professor at UCR’s Department of Chemical and Environmental Engineering, published their findings in the Journal of Hazardous Materials Letters. They highlight the sustainability of this cleanup technology, as hydrogen becomes water after the interaction, making it a green and environmentally friendly approach.
PFAS, often referred to as “forever chemicals” due to their persistent nature, have been widely used in consumer products since the 1940s. From grease-resistant food packaging to stain repellents and non-stick cookware, these chemicals are ubiquitous in our environment and have been found in the blood of nearly all people tested.
Moreover, exposure to PFAS has been linked to various health risks, including cancer, reproductive issues, and immune system interference. With increasing awareness of the dangers posed by these chemicals, regulatory bodies are implementing stringent standards for PFAS in drinking water and groundwater.
Liu and his team are further optimizing their technology to cater to a wide range of PFAS-contaminated source waters, offering a promising solution for both drinking water and industrial wastewater treatment.
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