The majority are low volatility and stay in the plumping, and a certain amount of the water that goes through the evaporators (a little under a tenth generally, I think) is flushed through (usually into the local water treatment system) with as a more concentrated solution. Some PFAS are volatile enough to ride the water vapor up and eventually fallout again.
Edit: I forgot, some types still legal in the US are volatile enough to not fallout, and instead become strong greenhouse gases.
Isnt that water evaporated? Does PFAS stick around steam?
The majority are low volatility and stay in the plumping, and a certain amount of the water that goes through the evaporators (a little under a tenth generally, I think) is flushed through (usually into the local water treatment system) with as a more concentrated solution. Some PFAS are volatile enough to ride the water vapor up and eventually fallout again.
Edit: I forgot, some types still legal in the US are volatile enough to not fallout, and instead become strong greenhouse gases.
Apparently the F in PFAS is for flourine, which doesn’t evaporate off with the water. PFAS stay behind.