Tris(2-aminoethyl)amine in-situ modified thin-film composite membranes for forward osmosis applications

2017 ◽  
Vol 537 ◽  
pp. 186-201 ◽  
Author(s):  
Liang Shen ◽  
Jian Zuo ◽  
Yan Wang
Keyword(s):  
Thin Film ◽  
Forward Osmosis ◽  
Composite Membranes ◽  
Film Composite ◽  
Thin Film Composite

scholarly journals Recent advances in nanomaterial-modified polyamide thin-film composite membranes for forward osmosis processes

2019 ◽  
Vol 584 ◽  
pp. 20-45 ◽  
Author(s):  
Nawshad Akther ◽  
Sherub Phuntsho ◽  
Yuan Chen ◽  
Noreddine Ghaffour ◽  
Ho Kyong Shon
Keyword(s):  
Thin Film ◽  
Forward Osmosis ◽  
Composite Membranes ◽  
Film Composite ◽  
Thin Film Composite ◽  
Recent Advances

Thin-film composite membranes with nanocomposite substrate modified with graphene oxide/TiO2 for forward osmosis process

2017 ◽  
Vol 70 ◽  
pp. 64-78 ◽  
Author(s):  
Fang Li ◽  
Feng Zhao ◽  
Manhong Huang ◽  
Chunyan Ma ◽  
Bo Yang ◽  
...  
Keyword(s):  
Thin Film ◽  
Graphene Oxide ◽  
Forward Osmosis ◽  
Composite Membranes ◽  
Film Composite ◽  
Thin Film Composite

scholarly journals Polyamide thin-film composite membranes based on carboxylated polysulfone microporous support membranes for forward osmosis

2013 ◽  
Vol 445 ◽  
pp. 220-227 ◽  
Author(s):  
Young Hoon Cho ◽  
Jungim Han ◽  
Sungsoo Han ◽  
Michael D. Guiver ◽  
Ho Bum Park
Keyword(s):  
Thin Film ◽  
Forward Osmosis ◽  
Composite Membranes ◽  
Film Composite ◽  
Thin Film Composite

scholarly journals An In Situ Incorporation of Acrylic Acid and ZnO Nanoparticles into Polyamide Thin Film Composite Membranes for Their Effect on Membrane pH Responsive Behavior

Membranes ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 910
Author(s):  
Kgolofelo I. Malatjie ◽  
Bhekani S. Mbuli ◽  
Richard M. Moutloali ◽  
Catherine J. Ngila
Keyword(s):  
Thin Film ◽  
Acrylic Acid ◽  
Water Permeability ◽  
Zno Nanoparticles ◽  
Composite Membranes ◽  
Ph Responsive ◽  
Film Composite ◽  
Water Permeation ◽  
Thin Film Composite

This paper focuses on an in situ interfacial polymerization modification of polyamide thin film composite membranes with acrylic acid (AA) and zinc oxide (ZnO) nanoparticles. Consequent to this modification, the modified polyamide thin film composite (PA–TFC) membranes exhibited enhanced water permeability and Pb (II) heavy metal rejection. For example, the 0.50:1.50% ZnO/AA modified membranes showed water permeability of 29.85 ± 0.06 L·m−2·h−1·kPa−1 (pH 3), 4.16 ± 0.39 L·m−2·h−1·kPa−1 (pH 7), and 2.80 ± 0.21 L·m−2·h−1·kPa−1 1 (pH 11). This demonstrated enhanced pH responsive properties, and improved water permeability properties against unmodified membranes (2.29 ± 0.59 L·m−2·h−1·kPa−1, 1.79 ± 0.27 L·m−2·h−1·kPa−1, and 0.90 ± 0.21 L·m−2·h−1·kPa−1, respectively). Furthermore, the rejection of Pb (II) ions by the modified PA–TFC membranes was found to be 16.11 ± 0.12% (pH 3), 30.58 ± 0.33% (pH 7), and 96.67 ± 0.09% (pH 11). Additionally, the membranes modified with AA and ZnO/AA demonstrated a significant pH responsiveness compared to membranes modified with only ZnO nanoparticles and unmodified membranes. As such, this demonstrated the swelling behavior due to the inherent “gate effect” of the modified membranes. This was illustrated by the rejection and water permeation behavior, hydrophilic properties, and ion exchange capacity of the modified membranes. The pH responsiveness for the modified membranes was due to the –COOH and –OH functional groups introduced by the AA hydrogel and ZnO nanoparticles.

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