At ppt concentrations in seawater, it doesn't seem worth it. PFOS remediation is for contaminated soil or industrial wastewater.
https://www.youtube.com/watch?v=3m5qxZm_JqM
https://m.youtube.com/watch?v=rE7KcF3MphU
[1] https://www.reuters.com/business/energy/fire-offshore-pemex-...
C3 photosynthetic plant life will end in about 600My.
https://en.wikipedia.org/wiki/Formation_and_evolution_of_the...
https://en.wikipedia.org/wiki/Future_of_Earth
At ppt concentrations in seawater, it doesn't seem worth it. PFOS remediation is for contaminated soil or industrial wastewater.