Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
583953 | Journal of Hazardous Materials | 2008 | 12 Pages |
Abstract
The ozonation treatment was successfully described by second-order kinetics model, with a first-order with respect to the concentration of either ozone or toxin. At 20 °C, with initial concentration of MC-LR of 1 mg/L, the overall second-order reaction rate constant ranged from 6.79 Ã 104 to 3.49 Ã 103 Mâ1 sâ1 as the solution pH increased from 2 to 11. The reaction kinetics of the other AOPs (O3/H2O2, O3/Fe(II), and Fenton), were fitted to pseudo first-order kinetics. A rapid reaction was observed to took place at higher initial concentrations of O3, H2O2 and Fe(II), and higher temperatures. At pH 3, initial concentration of toxin of 1 mg/L, the pseudo first-order rate constant, achieved by Fenton process, was in order of 8.76 ± 0.7 sâ1.
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Authors
Fares Al Momani, Daniel W. Smith, Mohamed Gamal El-Din,