The effect of Schiff base network on the separation performance of thin film nanocomposite forward osmosis membranes
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Type
ArticleAuthors
Akther, NawshadLim, Sungil
Huy Tran, Van
Phuntsho, Sherub
Yang, Yanqin
Bae, Tae-Hyun
Ghaffour, NorEddine

Kyong Shon, Ho
KAUST Department
Biological and Environmental Sciences and Engineering (BESE) DivisionEnvironmental Science and Engineering Program
Water Desalination and Reuse Research Center (WDRC)
KAUST Grant Number
URF/1/3404-01Date
2019-02-16Online Publication Date
2019-02-16Print Publication Date
2019-06Permanent link to this record
http://hdl.handle.net/10754/631108
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Show full item recordAbstract
In this study, Schiff base network-1 (SNW-1) nanoparticles, which are covalent organic frameworks (COFs), were used as fillers in the polyamide (PA) active layer to elevate the performance of thin-film nanocomposite (TFN) forward osmosis (FO) membranes. The TFN membranes were prepared by interfacial polymerization (IP) of m-phenylenediamine (MPD) and trimesoyl chloride (TMC), and the SNW-1 nanoparticles were dispersed in the MPD aqueous solution at various concentrations. The secondary amine groups of SNW-1 nanoparticles reacted with the acyl chloride groups of TMC during the IP reaction to form strong covalent/amide bonds, which facilitated better interface integration of SNW-1 nanoparticles in the PA layer. Additionally, the incorporation of amine-rich SNW-1 nanoparticles into the TFN membranes improved their surface hydrophilicity, and the porous structure of SNW-1 nanoparticles offered additional channels for transport of water molecules. The TFN0.005 membrane with a SNW-1 nanoparticle loading of 0.005 wt.% demonstrated a higher water flux than that of pristine TFC membrane in both AL-FS (12.0 vs. 9.3 Lm-2h-1) and AL-DS (25.2 vs. 19.4 Lm-2h-1) orientations when they were tested with deionized water and 0.5 M NaCl as feed and draw solution, respectively.Citation
Akther N, Lim S, Huy Tran V, Phuntsho S, Yang Y, et al. (2019) The effect of Schiff base network on the separation performance of thin film nanocomposite forward osmosis membranes. Separation and Purification Technology. Available: http://dx.doi.org/10.1016/j.seppur.2019.02.034.Sponsors
The research conveyed in this paper was supported by King Abdullah University of Science and Technology (KAUST), Saudi Arabia, through the Competitive Research Grant Program – CRG2017 (CRG6), Grant # URF/1/3404-01.Publisher
Elsevier BVAdditional Links
https://www.sciencedirect.com/science/article/pii/S1383586618343089ae974a485f413a2113503eed53cd6c53
10.1016/j.seppur.2019.02.034