Process for separating a charged species from an aqueous system
US8382989B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2008 |
| Grant date | Feb 26, 2013 |
| Priority date | — |
| Expiry date | Mar 28, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/42
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a process for separating a charged species from an aqueous system, wherein the process comprises the following steps: (a) a first aqueous system comprising the charged species is contacted at a first temperature with an ampholytic polymeric 5 system comprising cationic and anionic domains, wherein the charged species is bonded to the ampholytic polymeric system; and (b) the ampholytic polymeric system is contacted with a second aqueous system at a second temperature, wherein the charged species is released to the second aqueous system, wherein the second temperature is higher than the first temperature and wherein the second temperature is higher than the first temperature and wherein the second 10 temperature is less than 60° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.