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Qualitative Study of the Dynamic Adsorption Layer by Bubble Rising Method

Bahmani, Alireza | 2017

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 49596 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Bastani, Dariush; Lotfi, marzieh
  7. Abstract:
  8. Surface phenomena and dynamic interfacial properties plays a significant role in multiphase gas-liquid & liquid-liquid processes applied in different industrial applications. However, current laboratory equipment and represented methods for dynamic and unsteady state condition caused by motivation of interface of two phases (like rising bubble), in purpose of qualitative investigation of interphase properties are not satisfying enough. Also, common modeling methods are represented with lots of modified assumptions which are not validated properly with experimental results. In current thesis, with development of laboratory tools and applying the “rising bubble method” for investigating the results, qualitative study of the dynamic adsorption layer in multiphase systems has been studied. In current research, study of dynamic rise of air bubble in BLG, BCS, SDS, C10DMPO and the mixture of protein-surfactants in different concentrations has been considered and investigated. The local velocity profile as a function of rise distance from the capillary has been calculated and the differences between various solutions has been discussed qualitatively. Final results show useful information about interactions between protein and surfactants and also, different behavior from rising bubble velocity profile in proteins solutions’ with adding non-ionic surfactant to the solution. The obtained results of this thesis can be used as a pioneer method for extraction and separation of surfactant and protein processes in food and pharmaceutical industries or diagnose of diseases caused by adsorption or coagulation of proteins
  9. Keywords:
  10. Proteins ; Rising Bubble ; Adsorption Dynamic ; Velocity Profile ; Ionic Surfactant ; Nonionic Surfactant

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