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Fast Removal of Methylene Blue From Aqueous Solution Using Magnetic-Modified Fe3o4 Nanoparticles Publisher



Abkenar SD1 ; Khoobi M2 ; Tarasi R3 ; Hosseini M4 ; Shafiee A2 ; Ganjali MR5
Authors
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Authors Affiliations
  1. 1. Dept. of Chemistry, Islamic Azad Univ., Savadkooh Branch, Mazandaran, 155, Iran
  2. 2. Dept. of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran Univ. of Medical Sciences, Tehran, 14176, Iran
  3. 3. Chemistry Dept., Zanjan Univ., P.O. Box 45195-313, Zanjan, Iran
  4. 4. Dept. of Life Science Engineering, Faculty of New Sciences and Technologies, Univ. of Tehran, Tehran, 14395-1561, Iran
  5. 5. Center of Excellence in Electrochemistry, Faculty of Chemistry, Univ. of Tehran, Tehran, 14155-6455, Iran

Source: Journal of Environmental Engineering (United States) Published:2015


Abstract

Tannic acid modified super paramagnetic Fe3O4 nanoparticles (Fe3O4-TAN) were synthesized by a simple strategy and were used as adsorbents for removal of methylene blue (MB) from water solution. The prepared magnetic nanoparticles (MNPs) were characterized by Fourier transform infrared (FT-IR), transmission electron microscopy (TEM), thermogravimetric (TGA), and X-ray diffraction (XRD) analyses. The effects of pH, contact time, dye concentration, and temperature on adsorption were determined. The experimental data were analyzed using the Langmuir adsorption model. The data fitted well to the model with maximum adsorption capacities 90.9∈∈mg/g under pH=10.5. Also, the adsorption kinetics and thermodynamic parameters were studied and evaluated. Adsorption of the MB to nanoparticles reached equilibrium after 25 min. In addition, the external magnetic field could easily separate nanoparticles from water with high separation efficiency. Desorption process of the adsorbed dyes was also investigated. © 2014 American Society of Civil Engineers.
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