Removal of fluorinated surfactants from waste water
Assignee3M Innovative Properties Company
InventorsKlaus Hintzer, Egon Obermaier, Werner Schwertfeger
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Abstract
The present invention provides a method of removing a fluorinated surfactant from waste water comprising fluoropolymer particles. The method comprises (i) adding a non-fluorinated surfactant to the waste water (ii) contacting the thus obtained waste water with adsorbent particles to adsorb at least a portion of the fluorinated surfactant to the adsorbent particles and (iii) separating the waste water and the adsorbent particles.
Claims10
Method of removing a fluorinated surfactant from waste water comprising fluoropolymer particles, said method comprising (i) adding a non-fluorinated surfactant to said waste water (ii) contacting the thus obtained waste water with adsorbent particles to adsorb at least part of the fluorinated surfactant to said adsorbent particles and (iii) separating the waste water and the adsorbent particles.
Dependencies are inferred from the claim text.