Separation of Metal Ions-based Microfluidic Platform for Liquid-liquid Extraction

Foroozan, Peyman | 2015

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 48236 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Mohammadi, Ali Asghar; Karimi Sabet, Javad
  7. Abstract:
  8. Continuous separation processes in microfluidic devices experienced a steep rise in attention during the last two decades. Among the different separation processes, liquid-liquid extraction especially benefits from the short molecular diffusion distance and large specific interfacial area, as these are advantageous for effective mass transport. In the present study, glass-based microfluidic devices have been fabricated utilizing laser ablation and wet chemical etching methods then experiments and numerical simulation were carried out to investigate hydrodynamic behavior of fluid flow in Y-junction microfluidic. In order to achieve phase separation at the end of the microchannel, a phase separation model focused on the pressure balance at the liquid-liquid interface have been proposed. Finally, liquid-liquid extraction of metal ion of calcium utilizing microfluidic technique has been carried out and influential parameters have been investigated. The result of hydrodynamic showed the simulated flow patterns in Y-junction microchannel using VOF scheme present good consistent with experimental observation. In addition, the model predicted values for achieving on-chip phase separation were validated with experimental results. The results showed that by increasing the concentration of crown ether and picric acid and reduce the concentration of calcium chloride, extraction efficiency increases. Moreover, the use of microfluidic devices is a reasonable alternative to conventional liquid-liquid extraction
  9. Keywords:
  10. Liquid-Liquid Extraction ; Microfluidic System ; Two Phase Flow ; Liquid-Liquid Separation ; Modified Volume of Fluid (VOF) ; Glass-Based Microfluidic

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