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Degradation and inactivation of tetracycline by TiO2 photocatalysis

Paper ID Volume ID Publish Year Pages File Format Full-Text
28588 44081 2006 6 PDF Available
Title
Degradation and inactivation of tetracycline by TiO2 photocatalysis
Abstract

To compare tetracycline abatement efficiency, tetracycline solutions were irradiated in aqueous suspensions of TiO2 with three different light sources: a UV lamp, a solarium device and a UV-A lamp. Negligible degradation was observed when irradiations were performed in absence of TiO2. In contrast, rapid tetracycline degradation was observed in the presence of 0.5 g l−1 of TiO2. Close to 50% of its initial concentration was eliminated after 10, 20 and 120 min when the irradiation source used was a UV lamp, a solarium device and a UV-A lamp, respectively. Significant mineralization was also obtained when the UV lamp and solarium were used for photocatalysis. The antibacterial activity of selected microorganisms was drastically inhibited when exposed to tetracycline solutions treated by the photocatalyst over short irradiation periods.

Keywords
Antibiotic; Bacterial activity; Photocatalysis; Tetracycline; TiO2
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 184, Issues 1–2, 15 November 2006, Pages 141–146
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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