These PFA's leach out for a long time, but the amount decreases asymptotically. These PFA's are not very soluble in water - there are solvents in which PFA's ar

These PFA's leach out for a long time, but the amount decreases asymptotically. These PFA's are not very soluble in water - there are solvents in which PFA's are much more soluble that at the same time are not water soluble and are also safe. By taking the leached water and mixing, say 100 gallons of water with one gallon of this safe solvent and agitating it well, you can get most of the PFA in the 100 gallons now concentrated in the one gallon of the safe solvent. The exact ratio of that concentration depends on the 'partition coefficient' (PC) if the PC is 100, after mixing and settling the two liquids separate, with that PC. So about ~~99% of the PFA is in that one gallon of solvent. A little solvent also dissolves in the water. This can be repeated and also run in 'counter current' flow to optimise the separation. AFter an experimental series, with various solvents and PFA's the best process is found. If the PFA is a solid and not volatile, the solvent can be boiled off in a vacuum = pure PFA = destroy with SCWO. Some PFA's might steam distil or boil = mixed solvent and PFA = destroy with SCWO. Water in a sealed space gets hotter and hotter as you heat it. If the space is strong, you can heat water to the critical point = the temperature/pressure where it is no longer water but is totally vapor. https://en.wikipedia.org/wiki/Critical_point_(thermodynamics) https://en.wikipedia.org/wiki/Critical_point_(thermodynamics... In this regime oxidizers, like ozone or O2 can be added and in those conditions almost all organics and oxidised to water, CO2. Fluorine bonds are broken and fluorine ions result and the same with most other inorganics, chlorides, bromides etc. This is at 705 degrees F and 3200 PSI = steam that can set stuff on fire = why HP boilers are so risky and so regulated. The company does not say much about their process, but the term SCWO says it all. The good thing is you can concentrate the PFAS down to a small volume by the concentration = a small processor can safely destroy the PFAS that issue in dilute amounts in a large volume. You can even make small low pressure concentrators at every land fill and ship the extracted concentrate to a small number of central places for oxidation - which I thing will end up being the functional process.