The degradation of propoxycarbazone-sodium, an active component of commercial herbicide, in aqueous solution with ozone, UV photolysis and advanced oxidation processes: O3/UV, O3/UV/H2O2, H2O2/UV, and the Fenton process was studied. All these methods of degradation proved feasible. The kinetics of propoxycarbazone-sodium degradation in water followed the pseudo-first order equation for all studied processes except the Fenton treatment. The application of schemes with ozone demonstrated low pseudo-first order rate constants within the range of 10−4 s−1. Addition of UV radiation to the processes improved the removal of propoxycarbazone-sodium and increased the pseudo-first order rate constants to 10−3 s−1. The Fenton process was the most efficient and resulted in 5 and 60 s of half-life and 90% conversion time of propoxycarbazone-sodium, respectively, at 14 mM H2O2 concentration. UV treatment and the Fenton process may be recommended for practical application in decontamination of water or wastewater.
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Research Article|
March 01 2011
Degradation of propoxycarbazone-sodium with advanced oxidation processes Available to Purchase
A. Dulov;
1Department of Chemical Engineering, Tallinn University of Technology, Ehitajate tee 5, Tallinn 19086, Estonia E-mail: [email protected]; [email protected]; [email protected]
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N. Dulova;
N. Dulova
1Department of Chemical Engineering, Tallinn University of Technology, Ehitajate tee 5, Tallinn 19086, Estonia E-mail: [email protected]; [email protected]; [email protected]
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Y. Veressinina;
Y. Veressinina
1Department of Chemical Engineering, Tallinn University of Technology, Ehitajate tee 5, Tallinn 19086, Estonia E-mail: [email protected]; [email protected]; [email protected]
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M. Trapido
M. Trapido
1Department of Chemical Engineering, Tallinn University of Technology, Ehitajate tee 5, Tallinn 19086, Estonia E-mail: [email protected]; [email protected]; [email protected]
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Water Supply (2011) 11 (1): 129–134.
Citation
A. Dulov, N. Dulova, Y. Veressinina, M. Trapido; Degradation of propoxycarbazone-sodium with advanced oxidation processes. Water Supply 1 March 2011; 11 (1): 129–134. doi: https://doi.org/10.2166/ws.2011.019
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