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Advanced Photocatalytic Ethylene Degradation Technology to Support Plant Research in the Enclosed Environment
Technical Paper
2003-01-2610
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Conducting research to assess the impact of microgravity environment on plant growth and development requires a research facility that has the capability to provide an enclosed, environmentally controlled plant chamber. Since plants are sensitive to a number of atmospheric gaseous materials, the chamber atmosphere must be isolated from the space vehicles' atmosphere, which typically contains high levels of CO2 and other trace contaminants and volatile organic compounds (VOCs) that can be detrimental to the plant growth. However, an enclosed chamber may result in a high concentration of ethylene, a potent hormone produced by the plants, which can accumulate to levels well above what plants are able to adapt to. The physiological effects of excessive ethylene on plant development include severe interruption of the pollen process and significant reduction of seed production. Hence, the enclosed plant research unit must be capable of removing the ethylene to assure healthy plant growth and development.
The Wisconsin Center for Space Automation and Robotics (WCSAR) at the University of Wisconsin Madison has recently developed an enhanced ethylene scrubber using a thin-film coated photocatalyst and homogeneous surface configuration. Comparisons between this new design and the previous version using particulate catalyst show a fundamental difference in photocatalytic behavior and reaction rate, especially under significantly elevated relative humidity in the test chamber. Since the photocatalytic material is not consumed during the oxidization process, this technology is particularly suitable for long-term space-based operations where the supply of consumable materials becomes a challenge.
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Zhou, W., Zeltner, W., and Meyers, R., "Advanced Photocatalytic Ethylene Degradation Technology to Support Plant Research in the Enclosed Environment," SAE Technical Paper 2003-01-2610, 2003, https://doi.org/10.4271/2003-01-2610.Data Sets - Support Documents
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References
- Anderson M.A. Yamazaki-Nishida S. Gervera-March S. 1994 Photodegradation of trichloro-ethylene in the gas phase using TiO 2 porous ceramic membrane Photocatalytic purification and treatment of water and air 405 420 Hsevier Amsterdam
- Barksdale J. 1966 Titanium: Its Occurrence. Chemistry, and Technology 2nd 139 Ronald Press Company New York
- Campbell W. Salisbury F. Bugbee B. Klassen S. 2001 Comparative floral development of Mir-grown and ethylene-treated earth-grown Super Dwarf wheat Journal of Plant Physiology 158 1051 1060
- Draper N.R. Smith H. 1981 Applied Regression Analysis 2nd Wiley New York
- Fu X. Clark L.A. Yang Q. Anderson M.A. 1996 Enhanced photocatalytic performance of Titania-based binary metal oxides: TiO 2 /ZrO 2 Environmental Science Technology 30 2 647 653
- Hill C.G., Jr. 1977 An Introduction to Chemical Engineering Kinetics and Reactor Design Wiley New York
- Klassen S. Bugbee B. Campbell W. 1999 Effects of low ethylene levels on USU-Apogee and Super Dwarf wheat Society of American Engineering (SAE) Technical Paper Series , Paper No. 1999-01-2025
- Norris J.D. 1995 Encyclopedia of Analytical Science 9 5237 Academic Press San Diego, CA
- Tibbitts T.W. Cushman K. Fu X. Anderson M.A. Bula R.J. 1999 Factors controlling activity of Zirconia-Titania for photocatalytic oxidation of ethylene Advances in Space Research 22 1443 1451
- Zhou W. Bula R.J. Draeger N. 1997 Evaluation and characterization of performance of the ethylene scrubber using particulate TiO 2 photocatalyst WCSAR Technical Report University of Wisconsin-Madison