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- Title
Parametric study and process modeling for metronidazole removal by rhombic dodecahedron ZIF-67 crystals.
- Authors
Mazloomi, Sajad; Amarloei, Ali; Gholami, Faeze; Haghighat, Gholam Ali; Badalians Gholikandi, Gagik; Nourmoradi, Heshmatollah; Mohammadi, Ali Akbar; Fattahi, Mehdi; Nguyen Le, Binh
- Abstract
Metronidazole (MNZ) is an extensively used antibiotic against bacterial infections for humans and farm animals. Prevention of antibiotics discharge is essential to prevent adverse environmental and health impacts. A member of metal–organic frameworks, zeolite imidazole framework-67 with cobalt sulfate precursor (ZIF-67-SO4) and exceptional physio-chemical properties was prepared via room temperature precipitation to adsorb MNZ. The study framework was designed by Box–Behnken Design to evaluate the effect of pH, ZIF-67-SO4 dose, and contact time on adsorption efficiency. The polynomial model fitted the adsorption system indicated the optimal condition for 97% MNZ removal occurs at pH = 7, adsorbent dosage = 1 g/L, and mixing time = 60 min. The model also revealed that the removal increased with contact time and decreased at strong pH. Equilibrium and kinetic study also indicated the adsorption of MNZ followed the intra-particle diffusion model and the Langmuir isotherm model with a qmax = 63.03 mg/g. The insignificant loss in removal efficacy in use-reuse adsorption cycles reflected the practical viability of ZIF-67-SO4.
- Subjects
PARAMETRIC processes; METRONIDAZOLE; LANGMUIR isotherms; METAL-organic frameworks; BACTERIAL diseases; GREATER wax moth
- Publication
Scientific Reports, 2023, Vol 13, Issue 1, p1
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/s41598-023-41724-y