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.
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 -