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Activation of persulfate by irradiated laterite for removal of fluoroquinolones in multi-component systems
- Source :
- Journal of Hazardous Materials, Journal of Hazardous Materials, 2018, 346, pp.159-166. ⟨10.1016/j.jhazmat.2017.12.011⟩, Journal of Hazardous Materials, Elsevier, 2018, 346, pp.159-166. ⟨10.1016/j.jhazmat.2017.12.011⟩
- Publication Year :
- 2018
- Publisher :
- HAL CCSD, 2018.
-
Abstract
- International audience; Although several emerging contaminants (e.g. fluoro(quinolones) (FQs)) have been simultaneously detected in environmental systems, there is very limited information on their elimination from contaminated waters in multi-component systems. In this study, removal of three FQs including flumequine (FLU), ciprofloxacin (CIP) and norfloxacin (NOR) were investigated in single and mixture systems, using natural laterite soil and persulfate (PS) under UVA irradiation. Both sorption and oxidation reactions contribute to the removal of FQs from aqueous phase, whereas quenching experiments showed that SO4[rad]− is mainly responsible for the FQs oxidation. The kinetic rate constants can be ranked as follows: CIP andgt; NOR andgt; FLU, regardless of whether the compound was alone or in mixture. The higher degradation rate constant of CIP relative to those of NOR and FLU could be explained by the high reactivity of SO4[rad]− radical with cyclopropane-ring containing compounds. Fall in oxidation performance was observed in synthetic wastewater, probably due to sulfate radical scavenging by wastewater components. However, degradation rate constants of CIP in wastewater remains unchanged in mixture systems as compared to single ones. This environmentally friendly remediation technology may appear as a promising way for the removal of fluoroquinolone antibiotics from multi-contaminated waters.
- Subjects :
- Environmental Engineering
Environmental remediation
Health, Toxicology and Mutagenesis
Persulfate
02 engineering and technology
Laterite
010501 environmental sciences
01 natural sciences
Redox
Reaction rate constant
Oxidation
medicine
Mixture
Environmental Chemistry
Reactivity (chemistry)
Waste Management and Disposal
0105 earth and related environmental sciences
Chemistry
[SDE.IE]Environmental Sciences/Environmental Engineering
Sorption
[CHIM.MATE]Chemical Sciences/Material chemistry
021001 nanoscience & nanotechnology
Pollution
6. Clean water
Wastewater
Flumequine
0210 nano-technology
[CHIM.OTHE]Chemical Sciences/Other
Nuclear chemistry
medicine.drug
Fluoroquinolones
Subjects
Details
- Language :
- English
- ISSN :
- 03043894 and 18733336
- Database :
- OpenAIRE
- Journal :
- Journal of Hazardous Materials, Journal of Hazardous Materials, 2018, 346, pp.159-166. ⟨10.1016/j.jhazmat.2017.12.011⟩, Journal of Hazardous Materials, Elsevier, 2018, 346, pp.159-166. ⟨10.1016/j.jhazmat.2017.12.011⟩
- Accession number :
- edsair.doi.dedup.....0db8f7138414c93f8496b9c6d4b67434