The effect of ozone oxidation on the second order reaction rate constant between effluent organic matter (EfOM) and hydroxyl radical (·OH), k OH-EfOM, has been evaluated. Previously, this rate constant was measured for EfOM samples collected from five geographically distributed wastewater treatment plants. The kOH-EfOM values ranged from 2.70 - 12.1 x 108 Mc-1 s-1. One additional EfOM sample collected during this study was pre- oxidized using different ozone dosages. While oxidation by ozone resulted in considerable change to the physico- chemical properties of the EfOM the reaction rate constant (measured initially as (4.38 ± 0.06) x 108 M-1 s-1) did not significantly change. This indicates that the reaction rate constant could be assumed to be constant during the application and modeling of advanced oxidation processes for water reuse applications.
- EfOM characterization
- Effluent organic matter (EfOM)
- Hydroxyl radical
- Reaction rate constant
ASJC Scopus subject areas
- Physical and Theoretical Chemistry