Advanced Oxidation of Tannic Acid in Aqueous Solution

Decomposition of tannic acid in aqueous solution in advanced oxidation processes has been studied. Different oxidizing agents: ozone, hydrogen peroxide and UV radiation have been used both as single and mutually combined components of the system. The course of reaction was examined by the changes of...

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Bibliographic Details
Published in:Ozone: science & engineering 2003-06, Vol.25 (3), p.199-209
Main Authors: Perkowski, Jan, Dawidow, Urszula, Jóźwiak, Wojciech K.
Format: Article
Language:English
Subjects:
Advanced Oxidation
Applied sciences
Exact sciences and technology
Industrial wastewaters
Ozone
Pollution
Tannic Acid
ToxAlert®Test
Wastewaters
Water treatment and pollution
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Summary:Decomposition of tannic acid in aqueous solution in advanced oxidation processes has been studied. Different oxidizing agents: ozone, hydrogen peroxide and UV radiation have been used both as single and mutually combined components of the system. The course of reaction was examined by the changes of chemical oxygen demand (COD) and total organic carbon (TOC) in aqueous solutions. Particular attention has been paid to determine optimal concentration of hydrogen peroxide, when it is used alone, together with O 3 and in H 2 O 2 +O 3 +UV combination. The most effective optimal concentration of H 2 O 2 was found. The entire mineralization of tannic acid into final products CO 2 and H 2 O can be accomplished in all combinations of advanced oxidation with ozone. Bacteriological test ToxAlert® with luminescence bacteria Vibro fisheri proved that toxicity of solutions decreased considerably during advanced oxidation of tannic acid solution.
ISSN:0191-9512
1547-6545
DOI:10.1080/01919510390481522