TY - JOUR T1 - Ciprofloxacin oxidation by UV-C activated peroxymonosulfate in wastewater. AU - Mahdi-Ahmed,Moussa, AU - Chiron,Serge, Y1 - 2013/11/23/ PY - 2013/09/02/received PY - 2013/11/13/revised PY - 2013/11/14/accepted PY - 2013/12/17/entrez PY - 2013/12/18/pubmed PY - 2014/9/5/medline KW - Ciprofloxacin KW - Sulfate radical anion KW - Transformation pathways. KW - UV/peroxymonosulfate KW - Wastewater SP - 41 EP - 6 JF - Journal of hazardous materials JO - J Hazard Mater VL - 265 N2 - This work aimed at demonstrating the advantages to use sulfate radical anion for eliminating ciprofloxacin residues from treated domestic wastewater by comparing three UV-254nm 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 60min 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. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/24333713/Ciprofloxacin_oxidation_by_UV_C_activated_peroxymonosulfate_in_wastewater_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(13)00885-6 DB - PRIME DP - Unbound Medicine ER -