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Ciprofloxacin oxidation by UV-C activated peroxymonosulfate in wastewater.
J Hazard Mater. 2014 Jan 30; 265:41-6.JH

Abstract

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.

Authors+Show Affiliations

UMR HydroSciences 5569, Montpellier University, 15 Avenue Ch. Flahault, 34093 Montpellier cedex 5, France.UMR HydroSciences 5569, Montpellier University, 15 Avenue Ch. Flahault, 34093 Montpellier cedex 5, France. Electronic address: Serge.Chiron@msem.univ-montp2.fr.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24333713

Citation

Mahdi-Ahmed, Moussa, and Serge Chiron. "Ciprofloxacin Oxidation By UV-C Activated Peroxymonosulfate in Wastewater." Journal of Hazardous Materials, vol. 265, 2014, pp. 41-6.
Mahdi-Ahmed M, Chiron S. Ciprofloxacin oxidation by UV-C activated peroxymonosulfate in wastewater. J Hazard Mater. 2014;265:41-6.
Mahdi-Ahmed, M., & Chiron, S. (2014). Ciprofloxacin oxidation by UV-C activated peroxymonosulfate in wastewater. Journal of Hazardous Materials, 265, 41-6. https://doi.org/10.1016/j.jhazmat.2013.11.034
Mahdi-Ahmed M, Chiron S. Ciprofloxacin Oxidation By UV-C Activated Peroxymonosulfate in Wastewater. J Hazard Mater. 2014 Jan 30;265:41-6. PubMed PMID: 24333713.
* Article titles in AMA citation format should be in sentence-case
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 -