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Advanced CO2 Removal Technology DevelopmentThe Advanced CO2 Removal Technical Task Agreement covers three active areas of research and development. These include a study of the economic viability of a hybrid membrane/adsorption CO2 removal system, sorbent materials development, and construction of a database of adsorption properties of important fixed gases on several adsorbent material that may be used in CO2 removal systems. The membrane/adsorption CO2 removal system was proposed as a possible way to reduce the energy consumption of the four-bed molecular sieve system now in use. Much of the energy used by the 4BMS is used to desorb water removed in the device s desiccant beds. These beds might be replaced by a desiccating membrane that moves the water from [he incoming stream directly into the outlet stream. The approach may allow the CO2 removal beds to operate at a lower temperature. A comparison between models of the 4BMS and hybrid systems is underway at Vanderbilt University. NASA Ames Research Center has been investigating a Ag-exchanged zeolites as a possible improvement over currently used Ca and Na zeolites for CO2 removal. Silver ions will complex with n:-bonds in hydrocarbons such as ethylene, giving remarkably improved selectivity for adsorption of those materials. Bonds with n: character are also present in carbon oxides. NASA Ames is also continuing to build a database for adsorption isotherms of CO2, N2, O2, CH4, and Ar on a variety of sorbents. This information is useful for analysis of existing hardware and design of new processes.
Document ID
20030107824
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Finn, John E.
(NASA Ames Research Center Moffett Field, CA, United States)
Verma, Sunita
(Science Systems and Applications, Inc.)
Forrest, Kindall
(Science Systems and Applications, Inc.)
LeVan, M. Douglas
(Vanderbilt Univ.)
Date Acquired
August 21, 2013
Publication Date
January 1, 2001
Subject Category
Nonmetallic Materials
Meeting Information
Meeting: Advanced Life Support PI Meeting
Location: Alexandria, VA
Country: United States
Start Date: November 7, 2001
Funding Number(s)
OTHER: 131-20-10
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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