Method of eliminating the influence of surfactants on the separation properties in liquid extraction systems
US4151076A · kind A · utility
8Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1978 |
| Grant date | Apr 24, 1979 |
| Priority date | — |
| Expiry date | Apr 14, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a method wherein dissolved materials are removed from an aqueous solution by means of a liquid extraction comprising an extraction step and a re-extraction step, the essential features of the method being that the extraction step is performed in the presence of surfactants and that the surfactants are removed in connection with the re-extraction step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.