Testbed for Determining the Filtering Capacities of COTS Adsorbents 2007-01-3137
A lab-scale testbed for screening and characterizing the chemical specificity of commercial “off-the-shelf” (COTS) polymer adsorbents was built and tested. COTS polymer adsorbents are suitable candidates for future trace contaminant (TC) control technologies. Regenerable adsorbents could reduce overall TC control system mass and volume by minimizing the amounts of consumables to be resupplied and stored. However, the chemical specificity of these COTS adsorbents for non-methane volatile organic compounds (NMVOCs) (e.g., methanol, ethanol, dichloromethane, acetone, etc) commonly found in spacecraft is unknown. Furthermore, the effect of humidity on their filtering capacity is not well characterized. The testbed, composed of a humidifier, an incubator, and a gas generator, delivers NMVOC gas streams to conditioned sorbent tubes. The testbed was used to measure the amount of water vapor adsorbed by four candidate COTS adsorbents and to determine the adsorptive capacities of Carbopack B and Carbosieve SIII using simulated gas streams (e.g., relative humidity, temperatures, and NMVOC loads) found in manned spacecraft.
Citation: Monje, O., Eraso, I., O'Keeffe, C., and Wheeler, R., "Testbed for Determining the Filtering Capacities of COTS Adsorbents," SAE Technical Paper 2007-01-3137, 2007, https://doi.org/10.4271/2007-01-3137. Download Citation
Author(s):
O. Monje, I. Eraso, C. O'Keeffe, R. M. Wheeler
Affiliated:
Dynamac Corporation, Limerick Institute Technology, NASA
Pages: 6
Event:
International Conference On Environmental Systems
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Volatile organic compounds
Humidity
Gases
Control systems
Chemicals
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