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Accelerated Oil Droplet Separation from Produced Water Using Magnetic Nanoparticles

Bagher Hosseini, Majid | 2017

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 50811 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Shayegan, Jalaleddin
  7. Abstract:
  8. Removal of petroleum hydrocarbons from water is one of the environmental challenges. In this study the functionalized magnetic nanoparticles (MNPs) was used to remove kerosene oil as contaminants from water. Effective factors on adsorption of oil on MNPs were investigated. Magnetic nanoparticles were synthesized on activated carbon derived from almond shell and after a coating by silica, it Was functionalized by NH2 and COOH functional groups. After preparation of kerosene oil/water stable emulsions by emulsifier, the adsorption capacity of AC@Fe3O4@SiO2-NH2-COOH was evaluated. The adsorbent was characterized by various physicochemical techniques such as transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray Diffraction and Dynamic light scattering. The effective Factors such as pH levels, concentrations of contaminants, adsorbent dosage, salinity, contact time and reusability of adsorbent was investigated and Results showed that the highest adsorption was at pH=11 and no salinity condition. After 4 times reusing of adsorbent, the adsorption capacity was reduced to 80%. Adsorption equilibrium data were compared with Freundlich and Langmuir models and results showed that the equilibrium data obeyed Langmuir model and the kinetic data were fitted to the pseudo-second-order model
  9. Keywords:
  10. Magnetic Separation ; Emulsion ; Magnetic Nanodot ; Nanoparticle Synthesis ; Oil Pollution ; Functional Group

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