A novel strategy for enhancing the electrospun PVDF support layer of thin-film composite forward osmosis membranes

M. Obaid, Hend Omar Mohamed, Ahmed S. Yasin, Olfat A. Fadali, Khalil Abdelrazek Khalil, Taewoo Kim, Nasser A.M. Barakat*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

A simple and novel treatment methodology is introduced to produce PVDF-based thin-film composite forward osmosis (TFC-FO) electrospun membranes for enhanced desalination performance. The proposed treatment strategy is based on improving the surface properties of the PVDF electrospun nanofiber support layer using triethylamine (TEA). The results indicated that this strategy enhanced the interfacial polymerization step by overcoming the hydrophobicity feature dilemma of the PVDF support layer. As an FO membrane, the characterization of the modified membrane shows a distinct decrease in the structure parameter of the support layer by 67%, which mitigates the adverse effect of the internal concentration polarization (ICP) by 45%. Moreover, the performance of the modified TFC-FO membrane exhibited a high water flux, approximately 68 LMH and low reverse salt flux, about 2 g m-2 h-1 at 2 M NaCl draw solution, with >99.5% salt rejection. Overall, the introduced modification technique has the advantages of being inexpensive, easy to implement, and appropriate for commercial membranes.

Original languageEnglish (US)
Pages (from-to)102762-102772
Number of pages11
JournalRSC ADVANCES
Volume6
Issue number104
DOIs
StatePublished - 2016

Bibliographical note

Funding Information:
M. Obaid thanks the Egyptian government for the financial support of his PhD studies including this research work. The authors extend their appreciation to International Scientific Collaboration Program ISCP at King Saud University for funding this research work through ISCP-002.

Publisher Copyright:
© 2016 The Royal Society of Chemistry.

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering

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