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Open Access Green as soon as Postprint is submitted to ZB.
Comparison of different advanced oxidation processes for the degradation of two fluoroquinolone antibiotics in aqueous solutions.
J. Environ. Sci. Health A Tox. Hazard. Subst. Environ. Eng. 48, 251-262 (2013)
In this study a comparative assessment using various advanced oxidation processes (UV/H2O2, UV/H2O2/Fe(II), O3, O3/UV, O3/UV/H2O2 and O3/UV/H2O2/Fe(II)) was attempted to degrade efficiently two fluoroquinolone drugs ENR [enrofloxacin (1-Cyclopropyl-7-(4-ethyl-1-piperazinyl)-6-fluoro-1,4-dihydro-4-oxo-3-quinolonecarboxylic acid)] and CIP [ciprofloxacin (1-cyclopropyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-quinoline-3-carboxylic acid)] in aqueous solutions at a concentrations of 0.15 mM for each drug. The efficiency of the applied oxidation processes (AOPs) has been estimated by the conversion of the original substrate (XENR and XCIP) and the reduction of chemical oxygen demand (COD), total organic carbon (TOC). Special emphasis was laid on the effect of varying reaction pH as well as of the applied oxidant doses on the observed reaction kinetics for each advanced oxidation processes. High degradation efficiencies, particularly in terms of rates of TOC and COD abatement, were obtained for photo-Fenton assisted ozonation [O3/UV/H2O2/Fe(II)], compared to other advanced oxidation processes. At pH 3 and 25 degrees C best results for the degradation of both investigated drugs were achieved when 10 mM H2O2, 0.5 mM Fe(II) and an initial dose of 8.5 mg L-1 ozone were applied. In addition, the evolution of toxicity of the reaction mixtures for different AOPs has been studied by the bioluminescence test (LUMIStox 300).
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Ozone ; Photo-fenton-assisted Ozonation ; Enrofloxacin ; Ciprofloxacin ; Advanced Oxidation Processes ; Bioluminescence Test (lumistox 300); Waste-water Treatment ; Aquatic Environment ; Biorecalcitrant Pesticides ; Photocatalytic Ozonation ; Antibacterial Agents ; Mass-spectrometry ; Reaction-kinetics ; Treatment Plants ; Vibrio-fischeri ; Surface Waters
ISSN (print) / ISBN
1093-4529
e-ISSN
1532-4117
Quellenangaben
Volume: 48,
Issue: 3,
Pages: 251-262
Publisher
Taylor & Francis
Non-patent literature
Publications
Reviewing status
Peer reviewed