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Effects of Relative Humidity on the Adsorption of Dichloromethane by Carbosieve SIII
Technical Paper
2007-01-3249
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Carbosieve SIII was used to filter dichloromethane (DCM) from a simulated spacecraft gas stream. This adsorbent was tested as a possible commercial-off-the-shelf (COTS) filtration solution to controlling spacecraft air quality. DCM is a halocarbon commonly used in manufacturing for cleaning and degreasing and is a typical component of equipment offgassing in spacecraft. The performance of the filter was measured in dry and humid atmospheres. A known concentration of DCM was passed through the adsorbent at a known flow rate. The adsorbent removed dichloromethane until it reached the breakthrough volume. Carbosieve SIII exposed to dry atmospheric conditions adsorbed more DCM than when exposed to humid air. Carbosieve SIII is a useful thermally regenerated adsorbent for filtering DCM from spacecraft cabin air. However, in humid environments the gas passes through the filter sooner due to co-adsorption of additional water vapor from the atmosphere.
Authors
Citation
Monje, O., Catechis, J., and Sager, J., "Effects of Relative Humidity on the Adsorption of Dichloromethane by Carbosieve SIII," SAE Technical Paper 2007-01-3249, 2007, https://doi.org/10.4271/2007-01-3249.Also In
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