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Photocatalytic Oxidation of Selected Organic Contaminants and Inactivation of Microorganisms in a Continuous Flow Reactor Packed with Titania-Doped Silica
ISSN: 0148-7191, e-ISSN: 2688-3627
Published July 11, 2005 by SAE International in United States
Annotation ability available
Two annular continuous flow reactors with nominal volumes of 400 mL and 150 mL were packed with silica gel pellets that were doped with titania (TiO2) (12 wt%). The reactors were configured with UV lamps in the center of the reactors. SOC oxidation experiments were performed in a single-pass mode with bicarbonate ions present and in a low dissolved oxygen environment. SOC concentrations decreased (ranging from 40% to 95%) without bicarbonate present. These removal efficiencies were not affected by moderate bicarbonate concentrations (up to 200 mg/L as NaHCO3) or low dissolved oxygen levels (2 mg/L). Microbial experiments were performed for the inactivation of selected viruses and bacteria. The log [N0/N] values resulting from two hours of 254-nm UV irradiation for the bacteriophages ФX-174, PRD-1, and MS-2 were 1.67, 1.43, and 1.65, respectively. The log [N0/N] values resulting from two hours of 254-nm UV irradiation for the bacteria Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa were 1.70, 1.40, and 1.62, respectively. In some instances experiments performed without pellets in the reactor produced greater inactivation, but in all experiments inactivation was below drinking water disinfection requirements.
CitationGarton, M., Chadik, P., Mazyck, D., and Farrah, S., "Photocatalytic Oxidation of Selected Organic Contaminants and Inactivation of Microorganisms in a Continuous Flow Reactor Packed with Titania-Doped Silica," SAE Technical Paper 2005-01-2991, 2005, https://doi.org/10.4271/2005-01-2991.
- Blake, D. M. 1999 Bibliography of Work on the Heterogeneous Photocatalytic Removal of Hazardous Compounds from Water and Air. National Renewable Energy Laboratory
- Cho, M. Chung, H. Choi, W. Yoon, J. 2005 Different Inactivation Behaviors of MS2 Phage and Escherichia coli in TiO 2 Photocatalytic Disinfection Applied and Environmental Microbiology 71 270
- Harm, W. 1980 Biological Effects of Ultraviolet Radiation 31 39 Cambridge University Press New York, NY
- Holmes, F.R. 2003 The Performance of a Reactor Using Photocatalysis to Degrade a Mixture of Organic Contaminants in Aqueous Solution University of Florida
- Ireland, J.C. Klostermann, P. Rice, E.W. Clark, R.M 1993 Inactivation of Escherichia coli by Titanium Dioxide Photocatalytic Oxidation Applied and Environmental Microbiology 59 1668
- Kawaguchi, H. Furuya, M. 1990 Photodegredation of Monochlorobenzene in Titanium Dioxide Aqueous Suspensions Chemosphere 21 12 1435
- Lange, K. E. Lin, C. H. 1998 Advanced Life Support Program: Requirements Definition and Design Considerations Crew and Thermal Systems Division Houston, TX
- Matthews, C. K. 1971 Bacteriophage Biochemistry Van Nostrand Reinhold Company New York, NY
- Malley, J. P. 2002 Ultraviolet Disinfection Control of Microorganisms in Drinking Water American Society Civil Engineers Reston, VA 213 235
- Morita, S. Namikoshi, A. Hirata, T. Oguma, K. Katayama, H. Ohgaki, S. Motoyama, N. Fujiwara, M. 2002 Efficacy of UV Irradiation in Inactivating Cryptosporidium parvum Oocysts Applied and Environmental Microbiology 68 5387
- Powers, K. 1998 The Development and Characterization of Sol Gel Substrates for Chemical and Optical Applications University of Florida
- Sjogren, J.C. Sierka, R.A. 1994 Inactivation of Phage MS2 by Iron-Aided Titanium Dioxide Photocatalysis Applied and Environmental Microbiology 60 344
- Turchi, C.S. Ollis, D.F. 1990 Photocatalytic Degradation of Organic-Water Contaminants Mechanisms Involving Hydroxyl Radical Attack Journal of Catalysis 122 178
- USEPA 1992 Methods for the Determination of Organic Compounds in Drinking Water Springfield
- Verostko, C.E. Carrier, C. Finger, B.W. 2004 Ersatz Wastewater Formulations for Testing Water Recovery Systems SAE International