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Removal of metronidazole from wastewater by Fe/charcoal micro electrolysis fluidized bed reactor

Malakootian, M. and Kannan, K. and Gharaghani, M.A. and Dehdarirad, A. and Nasiri, A. and Shahamat, Y.D. and Mahdizadeh, H. (2019) Removal of metronidazole from wastewater by Fe/charcoal micro electrolysis fluidized bed reactor. Journal of Environmental Chemical Engineering, 7 (6).

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Abstract

The aim of the research was to investigate the removal of metronidazole from aqueous solutions by Fe/charcoal micro-electrolysis fluidized bed reactor. The effective variables influencing the metronidazole removal including the initial pH of the solution, the initial concentration of metronidazole, contact time, aeration rate and Fe/charcoal ratio were studied. The amount of secondary iron ions pollution in the reactor effluent was investigated by a flame atomic absorption device. Degradation reaction kinetics were studied. The removal efficiency of metronidazole in the actual hospital wastewater sample was investigated under optimal conditions of the reactor. The stability and performance of the reactor was investigated through 4 consecutive cycles. Data analysis was performed by SPSS-16. The maximum removal efficiencies were obtained in optimal conditions including pH: 7, the contact time of 70 min, aeration rate of 6 L/min, charcoal/Fe ratio 1:1 and initial concentration of metronidazole of 10 mg/L as 90 and 78 percent for synthetic solutions and actual wastewater respectively. No secondary pollution of iron ions was detected. In the study of linear kinetic models, the degradation process followed pseudo-first kinetic order. The Fe/charcoal micro-electrolysis system is well-suited for efficient removal of antibiotics from aqueous solutions and applies to industrial scale. © 2019 Elsevier Ltd.

Item Type: Article
Additional Information: cited By 0
Uncontrolled Keywords: Charcoal; Chemical reactors; Efficiency; Effluents; Electrolysis; Fluidized bed furnaces; Hospitals; Iron; Kinetics; Metal ions; Pollution; Reaction kinetics; Supersaturation, Degradation reaction; Flame atomic absorption; Fluidized bed reactors; Galvanic cells; Hospital wastewater; Initial concentration; Metronidazole; Removal efficiencies, Fluidized beds
Subjects: QU بیوشیمی
فارماکولوژی QV
> دانشکده داروسازی > فارماکولوژی QV

بهداشت عمومی WA
بهداشت عمومی WA > بهداشت محیط WA
مقالات نمایه شده محققین دانشگاه در سایت ,Web of Science ,Scopus
Divisions: معاونت تحقیقات و فناوری
Depositing User: GOUMS
Date Deposited: 10 Dec 2019 09:44
Last Modified: 10 Dec 2019 09:44
URI: http://eprints.goums.ac.ir/id/eprint/10355

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