Reaction Kinetics of Ozone in Variably Saturated Porous Media
Publication: Journal of Environmental Engineering
Volume 130, Issue 4
Abstract
A kinetic model based on the mass balance principle with equilibrium partitioning of gaseous ozone into pore water was developed to delineate the reactions of ozone in variably saturated porous media contaminated with phenanthrene. Dimensionless fraction factors were used in the kinetic model to account for the reactions of ozone with soil organic matter (SOM), metal oxide (MO), and phenanthrene as a function of water saturation. The enhanced removal of phenanthrene resulting from heterogeneous catalytic reactions between ozone and soil organic matter and metal oxide was incorporated as lumped parameters in the reaction rate coefficients of gaseous and dissolved ozone with phenanthrene. Laboratory experiments employing 5 cm long mini column reactor systems were conducted to estimate the reaction constants for three porous medium types (glass beads, baked field soil, and field soil) at various water-saturation levels. Water saturation and SOM were found to significantly affect the decomposition of gaseous ozone in both uncontaminated and contaminated porous media. It was found that water saturation over 75% completely eliminates gas-to-solid interfacial ozone reactions with SOM and MO. The kinetic model, with the reaction parameters estimated in this study, predicted reasonably well the experimental data obtained from both the mini column reactor and 20 cm long columns packed with field soil, suggesting that the kinetic model would be suitable for describing the fate and reactions of ozone in variably saturated porous media for soil types and experimental conditions similar to those tested in this study.
Get full access to this article
View all available purchase options and get full access to this article.
References
Choi, H., Lim, H. N., Kim, J. Y., and Cho, J.(2001). “Oxidation of polycyclic aromatic hydrocarbons by ozone in the presence of sand.” Water Sci. Technol., 43(5), 349–356.
Environmental Security Technology Certification Program (ESTCP). (1999). “Technology status review, in situ oxidation.” DAC39-99-C-002, U.S. Department of Defense, Washington, D.C.
Hoigné, J., and Bader, H.(1983). “Rate constant of direct r of ozone with organic and inorganic compounds in water. 1. Non-dissociating compounds.” Water Res., 17, 173–183.
Hsu, I., and Masten, S. J.(1997). “The kinetics of the reaction of ozone with phenanthrene in unsatruated soils.” Environ. Eng. Sci., 14(4), 207–217.
Hsu, I., and Masten, S. J.(2001). “Modeling transport of gaseous ozone in unsaturated soil.” J. Environ. Eng., 127(6), 546–554.
Kim, J., and Choi, H.(2002). “Modeling in situ ozonation for the remediation of nonvolatile PAH-contaminated unsaturated soils.” J. Cont. Hydro.,55/3–4, 261–285.
Langlais, B., Reckhow, D. A., and Barink, D. R. (1991). Ozone in water treatment, application and engineering, Lewis, Boca Raton, Fla.
Lim, H. N., Choi, H., Hwang, T. M., and Kang, J.(2002). “Characterization of ozone decomposition in a soil slurry: Kinetics and mechanism.” Water Res., 36, 219–229.
Lin, S. S., and Gurol, M. D.(1996). “Heterogeneous catalytic oxidation of organic compounds by hydrogen peroxide.” Water Sci. Technol., 34, 57–64.
Masten, S. J., and Davies, S. H. R.(1997). “Efficacy of in-situ ozonation for the remediation of PAH-contaminated soils.” J. Cont. Hydro.,28, 327–335.
Miller, C. M., Valentine, R. L., Roehl, M. E., and Alvarez, Pedro J. J.(1996). “Chemical and microbiological assessment of pendimethanlin-contaminated soil after treatment with Fenton’s reagent.” Water Res., 30(11), 2579–2586.
Rhoades, J. D. (1996). Methods of soil analysis. Part 3, Chemical methods, D. J. Sparks, ed., Soil Science Society of America, Madison, Wis., 417–436.
Schwab, A. P., Su, J., Wetzel, S., Pekarek, S., and Banks, M. K.(1999). “Extraction of petroleum hydrocarbons from soil by mechanical shaking.” Environ. Sci. Technol., 33, 1940–1945.
Staehelin, J., and Hoigné, J.(1982). “Decomposition of ozone in water: rate of initiation by hydroxide ions and hydrogen peroxide.” Environ. Sci. Technol., 16, 676–681.
Stevenson, F. J. (1994). Humus chemistry, genesis, composition, reactions, 2nd Ed., Wiley, New York.
Swift, R. S. (1996). Methods of soil analysis. Part 3, Chemical methods, D. J. Sparks, ed., Soil Science Society of America, Madison, Wis., 961–1010.
Trapido, M., Veressinina, J., and Munter, R.(1994). “Ozonation and AOP treatment of phenanthrene in aqueous solutions.” Ozone: Sci. Eng., 16, 475–485.
United States Environmental Protection Agency (U.S. EPA). (1996). “Method 3550B, Utrasonic extraction.” Test Methods for Evaluating Solid Waste, Physical/Chemical Methods, SW-846, Office of Solid Waste and Emergency Response, Washington, D.C.
United States Environmental Protection Agency (U.S. EPA). (1998). “In situ remediation technology: In situ chemical oxidation.” EPA 542-R-98-008, Office of Solid Waste and Emergency Response, Washington, D.C.
Watts, R. J., Foget, M. K., Kong, S. H., and Teel, A. L.(1999). “Hydrogen peroxide decomposition in model subsurface systems.” J. Haz. Mat., 69, 229–243.
Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 130 • Issue 4 • April 2004
Pages: 432 - 441
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: Sep 25, 2001
Accepted: May 29, 2003
Published online: Mar 15, 2004
Published in print: Apr 2004
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.