Removal of fluorinated surfactants from waste water
US7018541B2 · kind B2 · utility
40Cited by
16References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2005 |
| Grant date | Mar 28, 2006 |
| Priority date | — |
| Expiry date | Jan 12, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/915
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.