Tylosin abatement in water by photocatalytic process

The photocatalytic degradation of a macrolide (tylosin) has been studied using immobilized titanium dioxide as photocatalyst in a laboratory reactor under UV illumination (365 nm). The degradation of the antibiotic and of the reaction intermediary product was monitored by UV spectrophotometry and HP...

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Bibliographic Details
Published inWater science and technology Vol. 62; no. 2; pp. 435 - 441
Main Authors Alatrache, A, Laoufi, N A, Pons, M N, Van Deik, J, Zahraa, O
Format Journal Article
LanguageEnglish
Published England IWA Publishing 01.01.2010
Subjects
Anti-Bacterial Agents - chemistry
Antibiotics
Chemical and Process Engineering
Constants
Degradation
Engineering Sciences
Feasibility studies
Glass plates
High-performance liquid chromatography
HPLC
Kinetics
Liquid chromatography
Molecular Structure
Photocatalysis
Photocatalysts
Photodegradation
Photolysis
Rate constants
Reaction kinetics
Spectrophotometry
Titanium dioxide
Tylosin
Tylosin - chemistry
Ultraviolet radiation
Wastewater
Wastewater treatment
Water - chemistry
Water Pollutants, Chemical - chemistry
AOP
immobilization
tylosin
ACID
TIO2 PHOTOCATALYSIS
INACTIVATION
REACTOR
LIQUID-CHROMATOGRAPHY
IMMOBILIZED TIO2
WASTE-WATER
titanium dioxide
DEGRADATION
macrolide
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Summary:The photocatalytic degradation of a macrolide (tylosin) has been studied using immobilized titanium dioxide as photocatalyst in a laboratory reactor under UV illumination (365 nm). The degradation of the antibiotic and of the reaction intermediary product was monitored by UV spectrophotometry and HPLC. Three photocatalysts (P25 from Degussa and PC105 and PC500 from Millennium) immobilized on glass plates were compared. A slightly better degradation was obtained with P25. Then the tylosin degradation kinetics were investigated with the P25 photocatalyst. The kinetic model of Langmuir-Hinshelwood is satisfactorily obeyed at initial time and in the course of the reaction. Adsorption and apparent rate constants were determined. These results suggest that, although an intermediary by-product was detected during the reaction, complete degradation of tylosin can be achieved, which confirms the feasibility of such a photocatalytic treatment for tylosin elimination from wastewater.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2010.928