Degradation of Ciprofloxacin by Activating Peroxymonosulfate with Sludge Biochar
Sludge biochar(BC), which was prepared by the pyrolysis of waste-activated sludge at 450℃, was applied for peroxymonosulfate(PMS) activation to construct a BC/PMS system for ciprofloxacin(CIP) degradation. The physical and chemical properties of BC were studied using scanning electron microscopy(SEM...
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Published in | Huanjing kexue Vol. 44; no. 12; p. 6801 |
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Main Authors | , , , , , , , , , |
Format | Journal Article |
Language | Chinese |
Published |
China
08.12.2023
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Subjects | |
Online Access | Get more information |
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Summary: | Sludge biochar(BC), which was prepared by the pyrolysis of waste-activated sludge at 450℃, was applied for peroxymonosulfate(PMS) activation to construct a BC/PMS system for ciprofloxacin(CIP) degradation. The physical and chemical properties of BC were studied using scanning electron microscopy(SEM), an energy dispersive spectrometer(EDS), a Fourier transform infrared spectrometer(FTIR), X-ray diffraction(XRD), a Zeta potential analyzer, and electron paramagnetic resonance spectroscopy(EPR). The effects of BC dosage, PMS dosage, initial pH value, and inorganic anions on CIP removal in the BC/PMS system were investigated. Further, the degradation mechanism of the BC/PMS system was speculated through the free radical quenching experiment and X-ray photoelectron spectroscopy(XPS) analysis. The results showed that the CIP degradation rate was 49.09% at a BC dosage of 1.0 g·L
, PMS of 3.0 mmol·L
, CIP of 20 mg·L
, and pH of 6.0 in 120 min. SO
and NO
had no obvious effect on the removal of CIP in the BC/PMS system |
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ISSN: | 0250-3301 |
DOI: | 10.13227/j.hjkx.202211264 |