In the present study, powder activated carbon (PAC) combined with Fe3O4 magnetite nanoparticles (MNPs) were used for the preparation of magnetic composites (MNPs-PAC), which was used as an adsorbent for amoxicillin (AMX) removal. The properties of magnetic activated carbon were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Brunaeur, Emmett and Teller and vibrating sample magnetometer. The operational factors affecting adsorption such as pH, contact time, adsorbent dosage, initial AMX concentration and temperature were studied in detail. The high surface area and saturation magnetization for the synthesized adsorbent were found to be 671.2 m2/g and 6.94 emu/g, respectively. The equilibrium time of the adsorption process was 90 min. Studies of adsorption equilibrium and kinetic models revealed that the adsorption of AMX onto MNPs-PAC followed Freundlich and Langmuir isotherms and pseudo-second-order kinetic models. The calculated values of the thermodynamic parameters, such as ΔG°, ΔH° and ΔS° demonstrated that the AMX adsorption was endothermic and spontaneous in nature. It could be concluded that MNPs-PAC have a great potential for antibiotic removal from aquatic media.
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Research Article|
October 24 2013
Magnetic Fe3O4@C nanoparticles as adsorbents for removal of amoxicillin from aqueous solution
Babak Kakavandi;
Babak Kakavandi
1Department of Environmental Health Engineering, School of Health, Ahvaz, Jundishapur University of Medical Sciences, Ahvaz, Iran
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Ali Esrafili;
Ali Esrafili
2Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
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Anoushiravan Mohseni-Bandpi;
Anoushiravan Mohseni-Bandpi
3Department of Environmental Health Engineering, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Ahmad Jonidi Jafari;
Ahmad Jonidi Jafari
2Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
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Roshanak Rezaei Kalantary
2Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
4Center for Water Quality Research (CWQR), Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran
E-mail: r-rezaei@sina.tums.ac.ir
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Water Sci Technol (2014) 69 (1): 147–155.
Article history
Received:
May 27 2013
Accepted:
September 25 2013
Citation
Babak Kakavandi, Ali Esrafili, Anoushiravan Mohseni-Bandpi, Ahmad Jonidi Jafari, Roshanak Rezaei Kalantary; Magnetic Fe3O4@C nanoparticles as adsorbents for removal of amoxicillin from aqueous solution. Water Sci Technol 1 January 2014; 69 (1): 147–155. doi: https://doi.org/10.2166/wst.2013.568
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