| Titre : |
Residual cod reduction in biologically treated leather tanning effluents by advanced treatment processes |
| Type de document : |
texte imprimé |
| Auteurs : |
Olcay Tünay, Auteur ; Z. Berker Yelmez, Auteur ; Tugba Olmez, Auteur ; Isik Kabdasli, Auteur |
| Année de publication : |
2006 |
| Article en page(s) : |
p. 123-131 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Biological treatment of effluents from industrial wastewaters often requires further treatment to comply with discharge standards. In this paper, an advanced oxidation processes and activated carbon adsorption were applied. Direct ozone reaction provided 70 % COD reduction. A readily oxidizable part of the substrate was defined. Catalytic ozone oxidation using ferric chloride proved to be very effective. Oxidation by ozone at pH 13 was fast and resulted in complete mineralization. The efficiency of O3/H2O2 system was dependent on O3/H2O2 ratio and at 1 mol/l mol ratio a better COD reduction than that of ozone alone was obtained. A kinetic equation was derived for the slower part of O3/H2O2 (1 mol/ 1 mol ) oxidation. Adsorption experiments were conducted using powdered and granular carbon. The time to attain the equilibrium was found to be long and COD removal efficiencies were below 25%. Use of powdered activated carbon in combination with an activated sludge process was recommended. |
| En ligne : |
https://drive.google.com/file/d/161ZXVE48oUmEIbnGcUXwuIGSD4Mvvzhk/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4015 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CI, N° 4 (04/2006) . - p. 123-131
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