Method for treating oil-containing aqueous mixtures with cation exchange resin
US9926211B2 · kind B2 · utility
1Cited by
11References
9Claims
0Family size
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Key dates
| Filing date | Jul 8, 2014 |
| Grant date | Mar 27, 2018 |
| Priority date | — |
| Expiry date | May 1, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2305/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for treating an oil-containing aqueous mixture comprising the step of passing the mixture (1) through a media (6) comprising a bead-form cation exchange resin combined with a cationic surfactant, wherein the resin includes a sulfonated crosslinked copolymer matrix having a rough surface characterized by having a frequency of at least 5 peaks and valleys per sample surface area (283 um×212 um), where the difference between the average height of the 5 highest peaks and the 5 lowest valleys is at least 6 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.