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:: Volume 29, Issue 2 (3-2024) ::
__Armaghane Danesh__ 2024, 29(2): 185-202 Back to browse issues page
Investigating the Removal Efficiency of Metronidazole Antibiotic from Aqueous Solutions Using Fe0/graphene Magnetic Nanocomposites
A Ebadi 1, F Hashemian Qhahfarokhi2
1- 1Department of Chemistry, Kazerun Branch, Islamic Azad University, Kazerun, Iran, , ebadiamin88@yahoo.com
2- 2Department of Chemistry, General Department of Education of Kohgiluyeh and Boyerahmad province, Boyerahmad District, Yasuj, Iran.
Abstract:   (461 Views)
Background & aim: Antibiotics are a group of emerging contaminants in the aquatic environment that due to cumulative effects, different adverse effects, and leading to drug resistance, residues threaten the human health and ecosystem in the low concentrations found in the environment. This makes it necessary to provide wastewater treatment facilities in the production sources of these materials to prevent their unnecessary release into the environment. Therefore, the purpose of this study was to determine and catalytic analysis of the antibiotic metronidazole by using iron nanoparticles supported on the synthesized graphene in aqueous solutions.

Methods: In the present experimental study conducted in 2023, graphene-supported iron nanocomposites were synthesized using green chemistry method and pomegranate juice as a reducing agent. The physical and structural characteristics of the synthesized adsorbent were analyzed by XRD, SEM and TEM techniques. In this study, the effect of variables such as solution pH (3, 5, 7, 9 and 11), adsorbent dose (10, 30, 50, 70, 90 and 100 mg), initial concentration (5, 10, 25, 50, 75 and 100 mg/L), contact time (15, 30, 45, 60, 75 and 90 min) and reaction temperature (5, 15, 25, 35, 45 and 55 °C) in the removal of metronidazole antibiotic under the process of surface absorption by Fe/Graphene nano-absorbents were studied. A spectrophotometer was used to measure the residual concentration of metronidazole antibiotic at the wavelength of maximum absorption (320 nm). The collected data were analyzed using statistical tests of analysis of variance.

Results: The Scanning Electron Microscope (SEM) image indicated that the particle size of the catalyst sample was in the range of 40-60 nm. Moreover, the practically spherical shape of catalyst nanoparticles was revealed from the image. The results of the present study indicated that at the optimal pH 5, the highest removal efficiency of metronidazole was obtained in the presence of 5% iron nanoparticles supported on the graphene. Whit a 60-minute contact time and 50 mg/L initial concentration of metronidazole, the removal efficiency was 92%. The optimal and economical dose of catalyst was also obtained at 0.1 g and reaction temperature was 45 °C.

Conclusion: The results indicated that the catalytic process of iron nanoparticles supported on the graphene can be an efficient process in the field of removing the antibiotic metronidazole from aqueous solutions and due to the simplicity of its separation by an external magnetic field, therefore it can be considered a suitable substitute for other catalysts.

 
Keywords: Absorption of metronidazole pollutant, Absorbent, Fe nanoparticles, Graphene
Full-Text [PDF 862 kb]   (82 Downloads)    
Type of Study: Research | Subject: General
Received: 2023/11/5 | Accepted: 2024/02/12 | Published: 2024/03/16
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Ebadi A, Hashemian Qhahfarokhi F. Investigating the Removal Efficiency of Metronidazole Antibiotic from Aqueous Solutions Using Fe0/graphene Magnetic Nanocomposites. armaghanj 2024; 29 (2) :185-202
URL: http://armaghanj.yums.ac.ir/article-1-3551-en.html


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Volume 29, Issue 2 (3-2024) Back to browse issues page
ارمغان دانش Armaghane Danesh
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