Abstract
A novel polyvinylidene fluoride (PVDF) ultrafiltration membrane blended with different concentrations of SAPO-34 nanoporous zeolite was fabricated by the non-solvent induced phase inversion method. The prepared blended membranes were characterized by scanning electron microscopy (SEM), water contact angle, porosity, energy dispersive X-ray (EDX), and permeation analyses as well as fouling and rejection tests. The SEM images of the membranes showed an asymmetric structure possessing a dense top-layer and a combination of spongy and finger-like porous sub-layer. The modified PVDF membranes had lower water contact angle, higher hydrophilicity and water flux due to the presence of hydrophilic SAPO-34 zeolite in the polymer medium. All of the nanocomposite membranes showed higher flux recovery ratio (FRR (%)) compared to the unfilled PVDF membrane. The membrane containing 0.5 wt% SAPO-34 had the best antifouling performance (FRR = 89.4%) with a bovine serum albumin (BSA) rejection value more than 99%.
Original language | English |
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Pages (from-to) | 300-309 |
Number of pages | 10 |
Journal | Separation and Purification Technology |
Volume | 163 |
DOIs | |
Publication status | Published - 11 May 2016 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2016 Published by Elsevier B.V.
Keywords
- Antifouling
- Mixed matrix membranes
- PVDF
- SAPO-34
- Zeolite