Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/79613
Title: Enhanced hollow fiber membrane performance via semi-dynamic layer-by-layer polyelectrolyte inner surface deposition for nanofiltration and forward osmosis applications
Authors: Liu, Chang
Shi, Lei
Wang, Rong
Keywords: DRNTU::Engineering::Environmental engineering::Water treatment
Issue Date: 2014
Source: Liu, C., Shi, L.,& Wang, R. (2014). Enhanced hollow fiber membrane performance via semi-dynamic layer-by-layer polyelectrolyte inner surface deposition for nanofiltration and forward osmosis applications. Reactive and functional polymers.
Series/Report no.: Reactive and functional polymers
Abstract: The layer-by-layer (LBL) polyelectrolyte deposited membranes have drawn increasing attention in various applications due to the ease of selective layer formation and their stability and versatility. In this study, the LBL deposition was performed at the inner surface of the polyethersulfone (PES) hollow fiber substrate to form composite nanofiltration (NF) membrane. The semi-dynamic deposition procedure was adopted with the aid of syringes. The newly developed inner deposited (id-LBL) membranes were then tested in NF and forward osmosis (FO) applications and the performance were compared with outer surface deposition as well as some literature data. The id-LBL membranes could not only withstand higher operating pressure but also possess superior hardness rejection especially in high concentration mixed salt solutions (more than 95% rejection to Mg2+ and Ca2+ in a 5000 ppm total dissolved salt (TDS) mixture under 4.8 bar). As for the FO process, with only two layer deposition, the id-LBL membranes also demonstrated significant performance improvement with increased water flux (up to 70 L/m2 h using 0.5 M MgCl2 as draw solution in active layer facing draw solution configuration) and reduced salt leakage (around 0.5 g/m2 h using 1 M MgCl2 draw solution in active layer facing feed water configuration). This study suggests that for hollow fiber substrate, the inner surface is more suitable for the formation of the selective layer via LBL deposition than the outer surface.
URI: https://hdl.handle.net/10356/79613
http://hdl.handle.net/10220/20938
ISSN: 1381-5148
DOI: 10.1016/j.reactfunctpolym.2014.07.018
Rights: © 2014 Elsevier B. V. This is the author created version of a work that has been peer reviewed and accepted for publication by Reactive and Functional Polymers. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.reactfunctpolym.2014.07.018].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CEE Journal Articles
NEWRI Journal Articles

Files in This Item:
File Description SizeFormat 
Liu Chang #2 (final).pdfMain article350.39 kBAdobe PDFThumbnail
View/Open
Liu Chang #2-tables and figures (final).pdfFigures342.33 kBAdobe PDFThumbnail
View/Open

SCOPUSTM   
Citations 20

35
checked on Sep 5, 2020

WEB OF SCIENCETM
Citations

34
checked on Oct 17, 2020

Page view(s)

317
checked on Oct 24, 2020

Download(s)

170
checked on Oct 24, 2020

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.