Construction of Suitable Polymeric Membrane by Thermal Induce Phase Separation (TIPS) for using in the Membrane Bioreactor (MBR)

Jahanbakhshi, Nader | 2015

503 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 47064 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Farhadi, Fathollah; Mousavi, Abbas
  7. Abstract:
  8. In this study, the response surface methodology (RSM) based on the central composite design (CCD) were used to prepare a polypropylene grafted maleic anhydride (PP-g-MA) microporous flat sheet membrane via thermally induced phase separation (TIPS) method. Mixture of dibutyl phthalate (DBP) and dioctyl phthalate (DOP) were used as diluent. The effect of the polymer composition and coagulation bath temperature on the morphology and performance of the fabricated microporous membranes in a bioreactor (MBR) were investigated. Analysis of variance (ANOVA) was used to determine which variables and interactions between variables have a significant effect on our responses. The ANOVA revealed that the bath temperature was the most significant variable and only the effect of polymer concentration is significant on tensile response. Results of operations in the MBR system showed that with increasing the initial polymer concentration and decreasing the coagulation bath temperature flux curve slope decreased. The regression equations were reasonably validated and used to predict and optimize the performance of the PP-g-MA flat sheet membranes within the limits of the variables. Finally the optimum condition in order to obtain the best responses (maximum flux and minimum fouling) were obtained under the following conditions: polymer concentration 22.3 wt% and temperature 314.5 ok
  9. Keywords:
  10. Membrane Bioreactor ; Response Surface Methodology ; Thermally Induced Phase Separation (TIDS) ; Polypropylene Grafted Maleic Anhydride

 Digital Object List