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- W4387262308 abstract "The release of antibiotics that are difficult to degrade by themselves into the environment have received increasing attention because they have posed great threat to natural ecosystem and human health. Sodium persulfate (PS) is used to treat organic wastewater because of its strong oxidation, but it needs to be activated. Dielectric barrier discharge (DBD) can product stable gas discharge plasma that is suitable for activating PS. The synergistic degradation process of levofloxacin (LFX) by air DBD plasma with PS were investigated. The effects on the degradation ratio and energy efficiency of LFX were studied, including input power, air flow rate, original concentration, discharge spacing, and PS dosage. The degradation kinetics and synergistic factors were calculated under different PS additions. After plasma alone treatment 45 minutes, the maximum degradation ratio of LFX was 58.74% and 88.63% via plasma alone and plasma synergistic with PS under 15 W input power and 50 mg·L-1 LFX original concentration. The energy efficiency, the first-order reaction rate constant and the synergistic factor SI was 0.1532 g·(kW·h)-1, 4.116 × 10-2 min-1 and 1.64, respectively. The change of ozone concentration in the reaction system after adding PS was measured. The effects on the synergistic degradation of LFX of two radical scavengers, methanol (MeOH), and tert-butanol (TBA), were investigated. After calculation, the contribution ratios of ·OH and SO4-· were 48.08% and 26.97%, respectively. The intermediate products were analyzed by LC-MS in the decomposition process of LFX, and the probable decomposition pathway of LFX was presented." @default.
- W4387262308 created "2023-10-03" @default.
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- W4387262308 date "2023-12-01" @default.
- W4387262308 modified "2023-10-05" @default.
- W4387262308 title "Synergistic degradation levofloxacin through dielectric barrier discharge and sodium persulfate" @default.
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- W4387262308 doi "https://doi.org/10.1016/j.jece.2023.111158" @default.
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