Removal of fluorinated surfactants from waste water

Details Removal of fluorinated surfactants from waste water Removal of fluorinated surfactants from waste water

2006-03-28

2006-03-28

Barry, Chester T. (Department: 1724)

Liquid purification or separation

Processes

Ion exchange or selective sorption

C210S670000, C210S694000, C210S749000, C210S910000, C210S915000

Reexamination Certificate

active

07018541

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.

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