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Computational Fluid Dynamics Simulation of Metals Bio Recovery in a Bubble Columm Bio Reactor

Kaffashi, Amir | 2013

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 44109 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Yaghmaei, Soheyla; Moosavi, Mahmud
  7. Abstract:
  8. Bubble column reactors owe their wide application area to a number of advantages they provide both in design and operation as compared to other reactors. This type of reactors can be used as bio reactors in which microorganisms are applied to perform a special process such as bioleaching. In this study, a laboratory scale bubble column reactor for bio recovery of metals in Tehran refinery used catalysts has been simulated via computational fluid dynamics (CFD). The results are presented in two parts; in first, hydrodynamic characteristics of multiphase flows in reactor are presented. Gas hold up, liquid phase velocity distribution and shear stress in bubble column for different aeration rates are investigated. In second part, bioleaching process has been simulated. Four main metals in used catalysts including Al, Fe, Ni and Mo are considered in this simulation. Results show the recovery of 36.48% Ni, 86.48% Mo, 36.9% Al and 58.52% Fe have been processed. The experimental results and simulation are in good agreement. According to the results of the study and CFD advantages the scale up of the process can be studied. Also the bubble column reactors can be compared with other types of reactors applied as bio reactors
  9. Keywords:
  10. Computational Fluid Dynamics (CFD) ; Bioleaching ; Bubble Column Bioreactor ; Spent Catalyst

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