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Experimental Investigation of Mass Transfer Coefficient and Specific Interfacial Area in a New TIJR in the Presence of Nanoparticles

Abdollahzadeh khanegha , Fariba | 2015

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 46979 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Molaei Dehkordi, Asghar
  7. Abstract:
  8. The theory of mass transfer accompanied by chemical reaction for gas-liquid systems was used to measure the specific interfacial area and mass transfer coefficient in a two impinging jets reactor (TIJR) in the presence of γ-Al_2 O_3 nanoparticles.The absorption of oxygen in sulfite solutions used for the determination of mass transfer characteristics. First 3 liters of nanofluids were prepared at concentration of 1 w% then diluted To produce 10 Liters of nanofluids containing 0.3 w%. The stability of this nanofluid was determined using uv-vis to be less more than 95% in the first 3 hours. The influence of weight percent of nanoparticles (0, 0.05, 0.1, 0.15, 0.2, 0.3) on the specific interfacial area, overall volumetric mass-transfer coefficient and mass transfer coefficient were investigated. It was found that the presence of nanoparticles enhance specific interfacial area, overall volumetric mass-transfer coefficient and mass transfer coefficient. Moreover, the parameters increased with increasing concentration of nanoparticles. The maximum enhancement of the specific interfacial area, mass transfer coefficient and overall volumetric mass-transfer coefficient were 113%, 78% and 280% with respect to no nanoparticles in the system
  9. Keywords:
  10. Mass Transfer Coefficient ; Stability ; Nanoparticles ; Nanofluid ; Interfacial Area ; Two-Impinging Jet Reactor

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