Issue 104, 2016
From the journal:

RSC Advances

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

M. Obaid,ac   Hend Omar Mohamed,a   Ahmed S. Yasin,a   Olfat A. Fadali,c   Khalil Abdelrazek Khalil,de   Taewoo Kimb  and  Nasser A. M. Barakat*bc  

* Corresponding authors

a Bionanosystem Engineering Department, Chonbuk National University, Jeonju 561-756, Republic of South Korea

b Organic Materials and Fiber Engineering Department, Chonbuk National University, Jeonju 561-756, Republic of South Korea
E-mail: nasser@jbnu.ac.kr
Fax: +82 632702348
Tel: +82 632702363

c Chemical Engineering Department, Faculty of Engineering, Minia University, Minia, Egypt

d Mechanical Engineering Department, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia

e Materials Engineering and Design Department, Aswan University, Aswan, Egypt

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.

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

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Article information

DOI
https://doi.org/10.1039/C6RA18153H
Article type
Paper
Submitted
16 Jul 2016
Accepted
12 Oct 2016
First published
14 Oct 2016

RSC Adv., 2016,6, 102762-102772

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

M. Obaid, H. O. Mohamed, A. S. Yasin, O. A. Fadali, K. A. Khalil, T. Kim and N. A. M. Barakat, RSC Adv., 2016, 6, 102762 DOI: 10.1039/C6RA18153H

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