Per- and polyfluorinated alkyl substances (PFAS) are a class of man-made organic chemicals with robust carbon-fluorine bonds which make them extremely chemically, thermally, and biologically resistant. The stability of these compounds has led to their use in a variety of industrial and consumer products, including stain-resistant materials, non-stick surfacing, and aqueous film-forming foams (AFFF) for fire suppression. The widespread use of these compounds and advances in analytical chemistry methodology have resulted in routine, low-level detections of PFAS in water and soil environmental samples as well as in mammals and humans. Once in the environment or after human exposure, the durability of PFAS becomes problematic since they do not readily degrade or metabolize, making them extremely persistent. PlumeStop® Liquid Activated Carbon™ is comprised of very fine particles of activated carbon (1-2 μm) suspended in water through organic polymer dispersion chemistry. This patented formulation allows PlumeStop to travel through the aquifer under low-pressure application without clogging. Once applied, PlumeStop coats the surface of the soil, providing a place where contaminants adsorb, immediately reducing dissolved phase concentrations. For a more extensive review on the ability of PlumeStop to distribute in the subsurface, refer to PlumeStop Technical Bulletin 1.1.
PlumeStop Technical Bulletin 5.1 covers:
The adsorption efficacy of PlumeStop
The two of the most commonly encountered PFAS