A method for separating water soluble organics from a process stream by aqueous biphasic extraction
The present invention relates to a method for separating water-miscible organic species from a process stream by aqueous biphasic extraction. In particular, the method includes extracting the organic species into a polymer-rich phase of an aqueous biphase system in which the process stream comprises the salt-rich phase, and, next, separating the polymer from the extracted organic species by contacting the loaded, polymer-rich phase with a water-immiscible organic phase. Alternatively, the polymer can be separated from the extracted organic species by raising the temperature of the loaded, polymer-rich phase above the cloud point, such that the polymer and the water-soluble organic species separate into two distinct aqueous phases. In either case, a substantially salt-free, concentrated aqueous solution containing the organic species is recovered.
- Research Organization:
- Argonne National Lab., IL (US)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- W-31109-ENG-38
- Assignee:
- DOEGC; EDB-00:057675
- Patent Number(s):
- PATENTS-US-A8873297
- Application Number:
- 8-873,297; TRN: AH200021%%190
- OSTI ID:
- 756662
- Resource Relation:
- Patent File Date: 1997 Jun 11; Other Information: PBD: 1 Dec 1997
- Country of Publication:
- United States
- Language:
- English
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