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A Method for Producing Crosslinked Hydrophilic Membranes for with High Selectivity for Gas and Acid Gas
The Ohio State University
posted on 04/06/2009
OSU researchers have synthesized crosslinked polymer membranes with amino groups incorporated which showed: 1) high carbon dioxide and hydrogen sulfide permeabilities; 2) high selectivities of carbon dioxide and hydrogen sulfide vs. hydrogen; and 3) high selectivity of carbon dioxide vs. nitrogen. The applications for this technology are for purification of hydrogen and biogas for energy and other purposes and for the removal of carbon dioxide from flue gas containing nitrogen. For carbon dioxide removal, the membrane process combines absorption and desorption, which are generally carried out in two separate steps in the current technologies. Combining these steps allows for the energy savings and elimination of expensive equipment, the pumping of solution between the absorber and desorber and the need to continually adjust the pressure.
Suggested Uses
- Gas purification, particularly hydrogen (fuel cells) and bio gases
- Elimination of carbon dioxide from flue gas
Advantages
- Higher selectivity than current technologies
- Selectivity for multiple gases
- Shortens the carbon dioxide removal process and saves resources
- Allows for less manipulation of the gases to be separated
File Number: 04129
This innovation currently is not available for online licensing. Please contact Ryan Zinn at The Ohio State University for more information.
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