Optimal degradation of Ciprofloxacin in a heterogeneous Fenton-like process using (δ-FeOOH)/MWCNTs nanocomposite

Marjan Salari, Gholam Reza Rakhshandehroo, Mohammad Reza Nikoo*, Mohammad Mahdi Zerafat, Mehrdad Ghorbani Mooselu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

This study was aimed at the synthesis and characterization of (δ-FeOOH)/MWCNTs nanocomposite as the catalyst for Ciprofloxacin (CIP) removal through a heterogeneous Fenton-like process. The proposed experimental design applies the central composite design (CCD) as a response surface methodology (RSM). The effect of influential parameters, including initial CIP concentration, catalyst dose, H2O2 concentration, initial pH, and reaction time on removal, were investigated. (δ-FeOOH)/MWCNTs nanocomposite was synthesized using a single-step co-precipitation technique. Besides, nano-feroxyhyte and nanocomposite properties were characterized by transmission electron microscopy(TEM), Fourier-transform infrared spectroscopy (FTIR), energy dispersive X-ray analysis (EDX), particle size analysis (PSA), X-ray diffraction (XRD), vibrating sample magnetometer (VSM) and field emission scanning electron microscopy (FESEM). The inhibitory hale experiment was performed by Escherichia coli (E. coli) to evaluate the antibacterial activity. The optimal CIP removal efficiency (86.9%) was achieved by 131.6 min reaction time, CIP concentration of 10.0 mg/L, catalyst dosage of 23.5 mg, H2O2 concentration of 20.6 mM, and initial pH of 5.3, with a biodegradability index (BOD5/COD) of 0.35 Based on the results, (δ-FeOOH)/MWCNTs showed a significant catalytic activity for CIP removal, which can be attributed to the simultaneous effects of advanced oxidation and absorption.

Original languageEnglish
Article number101625
JournalEnvironmental Technology and Innovation
Volume23
DOIs
Publication statusPublished - Aug 2021

Keywords

  • (δ-FeOOH)/MWCNTs nanocomposite
  • Central composite design (CCD)
  • Ciprofloxacin antibiotic
  • Feroxyhyte
  • Heterogeneous Fenton-like process

ASJC Scopus subject areas

  • Environmental Science(all)
  • Soil Science
  • Plant Science

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