Record Display for the EPA National Library Catalog

RECORD NUMBER: 94 OF 2622

OLS Field Name OLS Field Data
Main Title Advanced Oxidation Processes. Test of a Kinetic Model for the Oxidation of Organic Compounds with Ozone and Hydrogen Peroxide in a Semibatch Reactor.
Author Glaze, W. H. ; Kang, J. W. ;
CORP Author California Univ., Los Angeles.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.;Los Angeles City Dept. of Water and Power, CA.;National Science Foundation, Washington, DC.
Publisher c1989
Year Published 1989
Report Number EPA/600/J-89/517;
Stock Number PB91-183186
Additional Subjects Reaction kinetics ; Mathematical models ; Oxidation ; Organic compounds ; Water pollution effects ; Experimental design ; Surface waters ; Ground water ; Ozone ; Hydrogen peroxide ; Hydroxyl radicals ; Mass transfer ; Bicarbonates ; pH ; Reprints ;
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB91-183186 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 09/04/1991
Collation 11p
Abstract
Experimental data are presented to test a kinetic model of the OE/H2O2 process in a semibatch reactor. The effect of bicarbonate and carbonate ions is measured and found to be in concurrence with model predictions. The effect of pH in the ozone mass-transfer-limited region was examined in bicarbonate-spiked distilled water. Since the reaction is mass transfer limited, the primary effect above pH 7 is the result of changes in the distribution of inorganic carbon species which are OH-radical scavengers. Below pH 7, there is a lag period during which ozone and peroxide increase until the chain reaction begins. The effects of chloride ion and the concentration of radical scavengers other than carbonate species in ground waters are also measured. The mass-transfer/reaction rate model has been used to estimate rate constants for the reaction of hydroxyl radicals with trichloroethylene, 1,2-dibromoethane, 1,2-dibromo-3-chloropropane, carbon tetrachloride, and two bicyclic alcohols, 2-methylisoborneol and geosmin. While the model developed for the distilled water system was successful in predicting the rate of tetrachloroethylene (PCE) oxidation and the concentration of residual ozone and peroxide in regions I and III, respectively, there are several features of the model that remain unresolved when the matrix is changed to a real surface or ground water. This and subsequent papers will investigate these effects.