alexa Degradation and transformation of atrazine under catalyzed ozonation process with TiO2 as catalyst.
Engineering

Engineering

Journal of Textile Science & Engineering

Author(s): Yang Y, Cao H, Peng P, Bo H

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Abstract Degradation of atrazine by heterogeneously catalyzed ozonation was carried out with TiO2 in the form of rutile as the catalyst. Some experimental factors such as catalyst dose, ozone dose and initial concentration of atrazine were investigated for their influence on catalyzed ozonation process. Although atrazine was effectively removed from aqueous solution by catalyzed ozonation process, the mineralization degree only reached 56\% at the experimental conditions. Five transformation products were identified by GC/MS analysis. The degradation of atrazine involved de-alkylation, de-chlorination and de-amination. Diaminotriazine and 5-azauracil were the de-chlorinated and de-aminated products, respectively. The evolution of concentration of transformation products during catalyzed ozonation process was compared with uncatalyzed ozonation to show the degradation pathway. Toxicity tests based on the inhibition of the luminescence emitted by Vibrio fisheri indicated the detoxification of atrazine by catalyzed ozonation. Copyright © 2014 Elsevier B.V. All rights reserved. This article was published in J Hazard Mater and referenced in Journal of Textile Science & Engineering

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