Rеvuе des Energies Renouvelables
Volume 20, Numéro 4, Pages 683-691
2017-12-31
Degradation Of Macrolide Antibiotic In Water By Heterogeneous Photocatalysis
Authors : Ounnar A. . Bouzaza A. . Favier L. . Bentahar F. .
Abstract
The present work involves the photocatalytic degradation of tylosin macrolide antibiotic (TYL) in a batch reactor using powder titanium dioxide (TiO2) under artificial '9W-UV lamp'. The photodegradation efficiency has been investigated under the controlled process parameters including initial TYL concentration (5 - 80 mg/L), catalyst loading (0.1 - 4 g/L). The best reaction rate (about 99 %) was obtained for low concentrations and 1 g/L TiO2 in natural pH water. Under the operating conditions, the TYL photocatalytic removal follows a pseudo-first order kinetic and the Langmuir- Hinshelwood (L-H) model is successfully used to fit the experimental data indicating the dependence of reaction rate with the chemical reaction step.
Keywords
Tylosin, Antibiotic, Photodegradation, L-H model, Titanium dioxide, kinetic.
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