Methods and systems for treating liquids using switchable solvents
A method of treating a liquid. The method comprises providing a feed liquid comprising at least one solvent and at least one solute to a first side of a membrane. A single-phase draw solution comprising at least one of an aminium salt, an amidinium salt, and a guanidinium salt is provided to a second side of the membrane. The at least one solvent is osmosed across the membrane and into the single-phase draw solution to form a diluted single-phase draw solution. At least one of CO2, CS2, and COS is removed from the diluted single-phase draw solution to form a first multiple-phase solution comprising a first liquid phase comprising the at least one solvent, and a second liquid phase comprising at least one of an amine compound, an amidine compound, and a guanidine compound. A liquid purification system is also described.
- Research Organization:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC07-05ID14517
- Assignee:
- Battelle Energy Alliance, LLC (Idaho Falls, ID)
- Patent Number(s):
- 10,363,336
- Application Number:
- 13/480,053
- OSTI ID:
- 1568641
- Resource Relation:
- Patent File Date: 05/24/2012
- Country of Publication:
- United States
- Language:
- English
Similar Records
Draw solutions and methods of treating an aqueous liquid
Organic Liquid CO2 Capture Agents With High Gravimetric CO2 Capacity