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Titre du document / Document title

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

Auteur(s) / Author(s)

SANTOS M. A. (1) ; BONILLA VENCESLADA J. L. (1) ; MARTIN MARTIN A. (1) ; GARCIA GARCIA I. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Department of Chemical Engineering, University of Córdoba, Campus Universitario de Rabanales, Edificio C3, Ctra Madrid km 396, 14071 Córdoba, ESPAGNE

Résumé / Abstract

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.

Revue / Journal Title

Journal of chemical technology and biotechnology    ISSN  0268-2575   CODEN JCTBDC 

Source / Source

2005, vol. 80, no4, pp. 433-438 [6 page(s) (article)] (14 ref.)

Langue / Language

Anglais

Editeur / Publisher

Wiley, Chichester, ROYAUME-UNI  (1986) (Revue)

Mots-clés anglais / English Keywords

Organic compounds

;

Selectivity

;

Kinetics

;

Ozonization

;

Oxidation

;

Chemical degradation

;

Physicochemical purification

;

Waste water purification

;

Polyphenol

;

Phenols

;

Vinasse

;

Industrial waste water

;

Mots-clés français / French Keywords

Composé organique

;

Sélectivité

;

Cinétique

;

Ozonation

;

Oxydation

;

Dégradation chimique

;

Epuration physicochimique

;

Epuration eau usée

;

Polyphénol

;

Phénols

;

Vinasse

;

Eau usée industrielle

;

Mots-clés espagnols / Spanish Keywords

Compuesto orgánico

;

Selectividad

;

Cinética

;

Ozonización

;

Oxidación

;

Degradación química

;

Depuración fisicoquímica

;

Depuración aguas servidas

;

Polifenol

;

Fenoles

;

Vinaza

;

Agua servida industrial

;

Mots-clés d'auteur / Author Keywords

vinasse

;

ozone

;

phenolic compounds

;

selectivity

;

Localisation / Location

INIST-CNRS, Cote INIST : 560, 35400012692621.0110

Nº notice refdoc (ud4) : 16622840



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