Preparation and characterization of novel PSf/PVP/PANI-nanofiber nanocomposite hollow fiber ultrafiltration membranes and their possible applications for hazardous dye rejection

Avin J. Kajekar, B.M. Dodamani, Arun M. Isloor, Zulhairun Abdul Karim, Ng Be Cheer, A.F. Ismail, Simon J. Shilton

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Abstract

In the present study, PANI (polyaniline)-nanofibers were synthesized by interfacial polymerization technique, dispersed in n-Methyl-2-Pyrrolidone (NMP) solvent and blended with PVP (Polyvinylpyrrolidone)/PSf (Polysulfone) for preparing the novel hollow fiber membrane by dry–wet spinning technique. The newly prepared nanocomposite ultrafiltration hollow fiber membrane is characterized by Scanning Electron Microscope (SEM), Contact Angle, Zeta Potential and Differential Scanning Calorimeter (DSC). Filtration studies are conducted to measure the membrane pure water flux (PWF), rejection of hazardous dye (Reactive Red 120) and fouling resistance. The maximum rejections are obtained for M 0.5 membrane with 99.25% rejection of RR120 hazardous dye at 2 bar pressure. The pure water flux, percentage rejection, antifouling property and thermal resistance increased with an increase in PANI-nanofiber concentration. The contact angle of the membrane decreased with increasing PANI-nanofiber concentration, which indicated increased hydrophilicity of the new membranes.
Original languageEnglish
Pages (from-to)117–125
Number of pages9
JournalDesalination
Volume365
Early online date21 Feb 2015
DOIs
Publication statusPublished - 1 Jun 2015

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Keywords

  • hollow fiber membranes
  • ultrafiltration
  • PANI-nanofiber
  • dye rejection

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