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TECHNICAL PAPERS

Decontamination of Ventilation Systems Using Photocatalytic Air Cleaning Technology

[+] Author and Article Information
D. Yogi Goswami

Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL 32611e-mail: solar@mae.ufl:edu

J. Sol. Energy Eng 125(3), 359-365 (Aug 04, 2003) (7 pages) doi:10.1115/1.1592540 History: Received January 01, 2003; Revised March 01, 2003; Online August 04, 2003
Copyright © 2003 by ASME
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References

EPA, 1987, “Total Exposure Assessment Methodology (TEAM) Study,” Report 600/6-87/002a, Environmental Protection Agency, Washington, DC.
Block, S. S., 1991, Disinfection, Sterilization, and Preservation, 4th Edition, Lea & Febiger Publishers, Malvern, PA.
Dennis, P., 1990, “An Unnecessary Risk: Legionnaires Disease,” Special Technical Publication 1071, Proc. of ASTM Symp. on Indoor Air, Boulder, CO, pp. 84–89.
Schneider,  R. K., 1996, “Examining Air Filtration,” Engineered Systems, June, pp. 63–64.
Goswami, D. Y., Trivedi, D., and Block, S. S., 1995, “Photocatalytic Disinfection of Indoor Air,” Solar Engineering, Proc. of ASME Int. Solar Energy Conf., Hawaii, pp. 421–430.
Goswami,  D. Y., Trivedi,  D. M., Block,  S. S., 1997, “Photocatalytic Disinfection of Indoor Air,” ASME J. Sol. Energy Eng., 119, pp. 92–96.
Greist, H. T., Hingorani, S. K., Kelley, K., and Goswami, D. Y., 2002, “Using Scanning Electron Microscopy to Visualize Photocatalytic Mineralization of Airborne Microorganisms,” Proc. of Indoor Air 2002, 9th Int. Conf. on Indoor Air Quality and Climate, July, Monterey, CA, pp. 712–717.
Bahnemann,  D., Bockelmann,  D., and Goslich,  R., 1991, “Mechanistic Studies of Water Detoxification in Illuminated TiO2 Suspensions,” Sol. Energy Mater., 24, pp. 564–583.
Blake,  D. M., Webb,  J., Turchi,  C., and Magrini,  K., 1991, “Kinetic and Mechanistic Overview of TiO2-Photyocatalyzed Oxidation Reactions in Aqueous Solution,” Sol. Energy Mater., 24, pp. 584–593.
Prairie, M. R., Pacheco, J. E., and Evans, L. R., 1992, “Solar Detoxification of Water Containing Chlorinated Solvents and Heavy Metals via TiO2 Photocatalysis,” Solar Engineering: Proc. of ASME Int. Solar Energy Conf., 1 , pp. 1–8.
Goswami, D. Y., 1998, “Photocatalytic Air Disinfection,” US Patent Serial No. 5,835,840, Nov. 10, 1998 (27 Claims).
Goswami, D. Y., 1999, “Photocatalytic System for Indoor Air Quality,” U.S. Patent Serial No. 5,933,702 Aug. 3, 1999 (92 Claims).
Goswami, D. Y., 1999, “Electrostatic Photocatalytic Air Disinfection,” U.S. Patent Serial No. 5,993,738 Nov. 30, 1999 (22 Claims).
Goswami,  T. K., Hingorani,  S., Greist,  H., and Goswami,  D. Y., 1999, “Photocatalytic System to Decontaminate Indoor Air,” J. Adv. Oxid. Technol., 4(2), pp. 185–188.
Hingorani, S., Greist, H., Goswami, T., and Goswami, D. Y., 2000, “Clean-up of Contaminated Indoor Air Using Photocatalytic Technology,” Proc. of 12th Symp. on Improving Building Systems in Hot and Humid Climates, San Antonio, TX, May 2000 (Also, Proc. of Engineering Solutions to Indoor Air Quality Problems Symp., Raleigh, NC, July 2000. Also published in the journal for the Air and Waste Management Association, 2000, 98 , pp. 422–429).
Beaudreau, C., Hingorani, S., Goswami, T. K., and Goswami, D. Y., 1998, “Destruction of Dust Mite Allergens using Phototech™: Photocatalytic Technology for Disinfection of Indoor Air,” Pan-American Workshop on Commercialization of Advanced Oxidation Technologies, London, Ontario, Canada, June 27–30, 1998.

Figures

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Schematic of experimental apparatus
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Effect of relative humidity on the destruction of Serratia marcescens
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Schematic of experimental setup
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Non-catalytic reactor with no illumination (control)
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Non-catalytic reactor with illumination (photolysis)
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Photocatalytic reactor with no illumination (adsorption)
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Photocatalytic reactor with illumination (photocatalytic)
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Photocatalytic inactivation of DerpII
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S.marcescens without storage or PCO exposure
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S.marcescens exposed to PCO for 11.75 hr
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S.marcescens stored in the dark for 36 hr
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S.marcescens exposed to PCO for 36 hr
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B.subtilis spores without storage or PCO exposure
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B.subtilis spores exposed to PCO for 11.75 hr
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B.subtilis spores stored in the dark for 36 hr
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B.subtilis spores exposed to PCO for 36 hr
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A.niger spores without storage or PCO exposure
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A.niger spores exposed to PCO for 11.75 hr
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A.niger spores stored in the dark for 36 hr
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A.niger spores exposed to PCO for 36 hr

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