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Effects of Humidity Fluctuations on Adsorption Columns Used for Air Purification in Closed Environments
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English
Abstract
Effects of a cabin-level humidity upset on an activated carbon column used for adsorption of trace compounds from air are examined through a series of experiments and computer simulations. Breakthrough curves measured for dichloromethane in the presence of water indicate that a rapid increase in relative humidity can displace large quantities of dichloromethane from the adsorbed phase resulting in effluent streams containing more than 20 times the feed concentration. Additionally, the breakthrough time for organic compounds is reduced significantly at high relative humidity. Numerical simulation results show favorable qualitative agreement with measured breakthrough curves, yet do not consistently predict accurate water or dichloromethane loadings at all experimental conditions.
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Citation
Appel, W., LeVan, M., and Finn, J., "Effects of Humidity Fluctuations on Adsorption Columns Used for Air Purification in Closed Environments," SAE Technical Paper 961358, 1996, https://doi.org/10.4271/961358.Also In
References
- Taqvi, S.M. LeVan, M.D. “Virial Description of Multicomponent Adsorption Equilibrium for Homogeneous and Heterogeneous Surfaces,” A.I.Ch.E. Annual Meeting San Francisco 1994
- Rudisill, E.N. Hacskaylo, J.J. LeVan, M.D. “Coadsorption of Hydrocarbons and Water on BPL Activated Carbon,” Ind. Eng. Chem. Res. 31 1122 1130 American Chem. Society 1992
- Eissmann, R.N. LeVan, M.D. “Coadsorption of Organic Compounds and Water Vapor on BPL Activated Carbon. 2. 1,1,2-Trichloro-1,2,2-Trifluoroethane and Dichloromethane,” Ind. Eng. Chem. Res. 32 2752 2757 American Chem. Society 1993