A Novel Dual Layered Hydrophobic/Hydrophilic Composite Tri-bore Hollow Fiber Membrane for Vacuum Membrane Distillation-Preparation and Evaluation

Document Type : Original Article


1 Chemical engineering and pilot plant department, engineering research and renewable energy institute,national research centre

2 Chemical Engineering Department, Faculty of Engineering, Cairo University, Giza, Egypt

3 Chemical Engineering and Pilot Plant Department, Engineering Research Division, National Research Centre, Dokki, Giza, Egypt. Postal cod 12622


Polyvinylidene fluoride (PVDF) was used to create microporous, hydrophobic/hydrophilic dual-layer, tri-bore hollow fiber membranes under various operating conditions and with various polymeric dope compositions. Nanoparticles of silicon dioxide and titanium dioxide were added to both the outer and interior layers. To produce fibers with various morphologies, the concentration of SiO2 nano powder in the inner dope solution was changed. The created membranes were examined under a microscope to determine their shape, level of roughness (AFM), contact angle, and mechanical characteristics. The produced membrane's suitability for vacuum membrane distillation (VMD) is assessed. This study aims to relate the polymeric dope composition and spinning conditions to the preparation parameters, namely the hydrophobic/hydrophilic tri-bore hollow fiber membrane flux.


Main Subjects

Volume 65, Issue 13 - Serial Number 13
Special Issue: Chemistry and Global Challenges
December 2022
  • Receive Date: 11 August 2022
  • Revise Date: 03 September 2022
  • Accept Date: 05 September 2022
  • First Publish Date: 05 September 2022