PERFLUOROALKYL SUBSTANCES (PFAS):CHALLENGES AND OPPORTUNITIES IN WATER TREATMENT
What are perfluoroalkyl substances (PFAS) and why are they grabbing headlines? PFAS refers to a class of emerging contaminants that have challenged our understanding of water treatment. PFAS are persistent, highly mobile, and are often released as complex mixtures that may include hundreds to thousands of individual compounds. Furthermore, PFAS are ubiquitous in our society, with widespread use in products such as firefighting foams, stain- and water-resistant textiles, food packaging, and other consumer goods. Production and use of these products, coupled with widespread industrial uses for PFAS-containing materials, have resulted in groundwater and wastewater streams impacted with PFAS.