Membrane and Water Treatment

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Synthesis and characterization of polyamide membrane for the separation of acetic acid from water using RO process

  • Mirfarah, Hesam (Chemical and Petroleum Engineering Department, Sharif University of Technology) ;
  • Mousavi, Seyyed Abbas (Chemical and Petroleum Engineering Department, Sharif University of Technology) ;
  • Mortazavi, Seyyed Sajjad (Chemical and Petroleum Engineering Department, Sharif University of Technology) ;
  • Sadeghi, Masoud (Chemical and Petroleum Engineering Department, Sharif University of Technology) ;
  • Bastani, Dariush (Chemical and Petroleum Engineering Department, Sharif University of Technology)
  • Received : 2016.04.12
  • Accepted : 2016.01.18
  • Published : 2017.07.25
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Abstract

The main challenge in many applications of acetic acid is acid dehydration and its recovery from wastewater streams. Therefore, the performance of polyamide thin film composite is evaluated to separate acetic acid from water. To reach this goal, the formation of polyamide layer on polysulfone support membrane was investigated via interfacial polymerization (IP) of meta-phenylenediamine (MPD) in water with trimesoyl chloride (TMC) in hexane. Also, the effect of synthesis conditions, such as concentration of monomers and curing temperature on separation of acetic acid from water were investigated by reverse osmosis process. Moreover, the separation mechanism was discussed. The solute permeation was carried out under applied pressure of 5 bar at $25^{\circ}C$. Surface properties of TFC membrane were characterized by ATR-FTIR, SEM and AFM. The performance test indicated that 3.5 wt% of MPD, 0.35 wt% of TMC and curing temperature of $75^{\circ}C$ are the optimum conditions. Moreover, the permeate flux was $4.3{\frac{L}{m^2\;h}}$ and acetic acid rejection was about 43% at these conditions.

Keywords

References

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