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Estimating the selectivity of ozone in the removal of polyphenols from vinasse

Martin Santos, M. A., Bonilla Venceslada, J.L., Martín Martín, A. and García García, I. (2005) Estimating the selectivity of ozone in the removal of polyphenols from vinasse Journal of Chemical Technology and Biotechnology, 80, (4), pp. 433-439. (doi:10.1002/jctb.1222).

Record type: Article


The detoxification of some types of wastewater such as vinasse requires the combined use of chemical and biological treatments. The chemical treatment (eg chemical oxidation) tries to remove resistant compounds in order to make the waste more biodegradable. For economic and environmental reasons, the oxidant should be as selective as possible. Ozone in an acid medium can be an appropriate choice for this purpose. In this work, a straightforward method for estimating the oxidative selectivity of ozone against the rest of the organic load of the waste is developed. Though the kinetic constants found for the reactions of ozone with phenolic compounds are between 20 and 4 times higher than the reaction of ozone with the rest of the whole organic charge, the high organic load (COD) of vinasse yields low values for the selectivity of the reaction of interest, in any case, the selectivity increases with the increasing concentration of phenols. For the highest phenols concentration relative to the whole organic load (ie 0.6%) a selectivity of approximately 12% is obtained

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Published date: April 2005
Keywords: vinasse, ozone, phenolic compounds, selectivity


Local EPrints ID: 53038
ISSN: 0268-2575
PURE UUID: 1f8f22e2-5aab-4fcc-8a87-f3ab00dc9882

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Date deposited: 17 Jul 2008
Last modified: 17 Jul 2017 14:39

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Author: M. A. Martin Santos
Author: J.L. Bonilla Venceslada
Author: A. Martín Martín
Author: I. García García

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