scholarly journals Improved Performance and Mitigated Internal Concentration Polarization of Thin-Film Composite Forward Osmosis Membrane with Polysulfone/Polyaniline Substrate

2021 ◽  
Author(s):  
Xing Wu ◽  
Thomas M. Kohl ◽  
John Tsanaktsidis ◽  
Zongli Xie
Keyword(s):  
Thin Film ◽  
Concentration Polarization ◽  
Forward Osmosis ◽  
Film Composite ◽  
Thin Film Composite ◽  
Internal Concentration ◽  
Internal Concentration Polarization ◽  
Improved Performance

scholarly journals Thin Film Composite Forward Osmosis Membrane with Single-Walled Carbon Nanotubes Interlayer for Alleviating Internal Concentration Polarization

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 260 ◽  
Author(s):  
Yuanyuan Tang ◽  
Shan Li ◽  
Jia Xu ◽  
Congjie Gao
Keyword(s):  
Thin Film ◽  
Concentration Polarization ◽  
Water Flux ◽  
Forward Osmosis ◽  
Feed Solution ◽  
Film Composite ◽  
Thin Film Composite ◽  
Internal Concentration ◽  
Tfc Membrane ◽  
Internal Concentration Polarization

This study reported a series of thin film composite (TFC) membranes with single-walled nanotubes (SWCNTs) interlayers for the forward osmosis (FO) application. Pure SWCNTs with ultrahigh length-to-diameter ratio and without any functional group were applied to form an interconnect network interlayer via strong π-π interactions. Compared to the TFC membrane without SWCNTs interlayer, our TFC membrane with optimal SWCNTs interlayer exhibited more than three times the water permeability (A) of 3.3 L m−2h−1bar−1 in RO mode with 500 mg L−1 NaCl as feed solution and nearly three-fold higher FO water flux of 62.8 L m−2 h−1 in FO mode with the deionized water as feed solution and 1 M NaCl as draw solution. Meanwhile, the TFC membrane with SWCNTs interlayer exhibited significantly reduced membrane structure parameters (S) to immensely mitigate the effect of internal concentration polarization (ICP) in support layer with micro-sized pores in favor of higher water flux. It showed that the pure SWCNTs interlayer could be an effective strategy to apply in FO membranes.

Improved performance of thin-film composite forward osmosis membrane with click modified polysulfone substrate

Desalination ◽  
2020 ◽  
Vol 496 ◽  
pp. 114731 ◽  
Author(s):  
Hasan Salehi ◽  
Alireza Shakeri ◽  
Hossein Mahdavi ◽  
Rob G.H. Lammertink
Keyword(s):  
Thin Film ◽  
Forward Osmosis ◽  
Film Composite ◽  
Thin Film Composite ◽  
Improved Performance
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