Volume 16, Issue 2 (9-2023)
ijhe 2023, 16(2): 257-272 |
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Ghafoori M, Cheraghi M, Kiani Sadr M, Lorestani B, Sobhanardakani S. Removal of tetracycline from aqueous solution using magnetite graphene oxide modified with β-cyclodextrin as a novel adsorbent: equilibrium and kinetic studies. ijhe 2023; 16 (2) :257-272
URL: http://ijhe.tums.ac.ir/article-1-6755-en.html
URL: http://ijhe.tums.ac.ir/article-1-6755-en.html
Mohammad Ghafoori1 
, Mehrdad Cheraghi * 2, Maryam Kiani Sadr1 , Bahareh Lorestani1 , Soheil Sobhanardakani1
, Mehrdad Cheraghi * 2, Maryam Kiani Sadr1 , Bahareh Lorestani1 , Soheil Sobhanardakani1
1- Department of the Environment, College of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, Iran
2- Department of the Environment, College of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, Iran ,cheraghi@iauh.ac.ir
2- Department of the Environment, College of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, Iran ,
Abstract: (644 Views)
Background and Objective: Antibiotics are emerging pollutants that enter the human environment through pharmaceutical, hospital, and urban wastewater. Therefore, this study was conducted to investigate of removal efficacy of tetracycline (TC) from aqueous solutions using GO@Fe3O4@β-CD.
Materials and Methods: In this descriptive study, GO@Fe3O4@β-CD was synthesized and then used as an adsorbent for the removal of TC from aqueous solution. GO@Fe3O4@β-CD was characterized using X-ray diffraction (XRD), Scanning electronic microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and vibrating sample magnetometry (VSM) methods. Also, the influence of variables including pH (3-9), amount of adsorbent (0.003-0.050 g), contact time (0-100 min), and temperature (25-55 °C) so assessed on the efficacy of TC removal.
Results: The results of TGA analysis showed that GO@Fe3O4@β-CD nanoparticles were resistant to temperatures up to 400 °C. Also, the results indicated that β-cyclodextrin was uniformly dispersed on the surface of GO@Fe3O4.
The results indicated that removal efficiency increased up to 60 min contact time, 0.01 g of adsorbent, and decrease temperature to 25 °C. The optimum pH for TC removal was 7.0. Also, under these conditions, the adsorption process followed the Langmuir adsorption isotherm with a correlation coefficient of 0.992 and the pseudo-second-order kinetic model with a correlation coefficient of 0.997, 0.999, and 0.998. The maximum adsorption capacity of the prepared adsorbent was 357 mg/g.
Conclusion: The GO@Fe3O4@β-CD could be an effective and efficient adsorbent for the removal of TC from industrial wastewater.
Materials and Methods: In this descriptive study, GO@Fe3O4@β-CD was synthesized and then used as an adsorbent for the removal of TC from aqueous solution. GO@Fe3O4@β-CD was characterized using X-ray diffraction (XRD), Scanning electronic microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and vibrating sample magnetometry (VSM) methods. Also, the influence of variables including pH (3-9), amount of adsorbent (0.003-0.050 g), contact time (0-100 min), and temperature (25-55 °C) so assessed on the efficacy of TC removal.
Results: The results of TGA analysis showed that GO@Fe3O4@β-CD nanoparticles were resistant to temperatures up to 400 °C. Also, the results indicated that β-cyclodextrin was uniformly dispersed on the surface of GO@Fe3O4.
The results indicated that removal efficiency increased up to 60 min contact time, 0.01 g of adsorbent, and decrease temperature to 25 °C. The optimum pH for TC removal was 7.0. Also, under these conditions, the adsorption process followed the Langmuir adsorption isotherm with a correlation coefficient of 0.992 and the pseudo-second-order kinetic model with a correlation coefficient of 0.997, 0.999, and 0.998. The maximum adsorption capacity of the prepared adsorbent was 357 mg/g.
Conclusion: The GO@Fe3O4@β-CD could be an effective and efficient adsorbent for the removal of TC from industrial wastewater.
Type of Study: Research |
Subject:
تصفیه آب
Received: 2023/01/10 | Accepted: 2023/06/26 | Published: 2023/09/17
Received: 2023/01/10 | Accepted: 2023/06/26 | Published: 2023/09/17
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