%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Mahdi-Ahmed, M.
%A Chiron, Serge
%T Ciprofloxacin oxidation by UV-C activated peroxymonosulfate in wastewater
%D 2014
%L fdi:010063839
%G ENG
%J Journal of Hazardous Materials
%@ 0304-3894
%K Sulfate radical anion ; Ciprofloxacin ; Wastewater ; UV/peroxymonosulfate ; Transformation pathways
%M ISI:000331021100005
%P 41-46
%U https://www.documentation.ird.fr/hor/fdi:010063839
%> https://www.documentation.ird.fr/intranet/publi/depot/2015-07-07/010063839.pdf
%V 265
%W Horizon (IRD)
%X This work aimed at demonstrating the advantages to use sulfate radical anion for eliminating ciprofloxacin residues from treated domestic wastewater by comparing three UV-254 nm based advanced oxidation processes: UV/persulfate (PDS), UV/peroxymonosulfate (PMS) and UV/H2O2. In distilled water, the order of efficiency was UV/PDS>UV/PMS>UV/H2O2 while in wastewater, the most efficient process was UV/PMS followed by UV/PDS and UV/H2O2 mainly because PMS decomposition into sulfate radical anion was activated by bicarbonate ions. CIP was fully degraded in wastewater at pH 7 in 60 min for a [PMS]/[CIP] molar ratio of 20. Nine transformation products were identified by liquid chromatography-high resolution-mass spectrometry allowing for the establishment of degradation pathways in the UV/PMS system. Sulfate radical anion attacks prompted transformations at the piperazinyl ring through a one electron oxidation mechanism as a major pathway while hydroxyl radical attacks were mainly responsible for quinolone moiety transformations as a minor pathway. Sulfate radical anion generation has made UV/PMS a kinetically effective process in removing ciprofloxacin from wastewater with the elimination of ciprofloxacin antibacterial activity.
%$ 062 ; 038