Prototype aquaporin-based forward osmosis membrane : filtration properties and fouling resistance

The trade-off between water permeability and selectivity is considered as the biggest challenge during membrane fabrication for water purification. The aquaporin (AQP)-based biomimetic membrane has been proven to have both enhanced water permeability and improved selectivity due to the unique featur...

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Main Authors: Chun, Youngpil, Qing, Luo, Sun, Guofei, Muhammad Roil Bilad, Fane, Anthony Gordon, Chong, Tzzy Haur
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/141997
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1419972020-06-15T01:27:43Z Prototype aquaporin-based forward osmosis membrane : filtration properties and fouling resistance Chun, Youngpil Qing, Luo Sun, Guofei Muhammad Roil Bilad Fane, Anthony Gordon Chong, Tzzy Haur School of Civil and Environmental Engineering Nanyang Environment and Water Research Institute Singapore Membrane Technology Centre Engineering::Environmental engineering Aquaporin Based Membrane Forward Osmosis The trade-off between water permeability and selectivity is considered as the biggest challenge during membrane fabrication for water purification. The aquaporin (AQP)-based biomimetic membrane has been proven to have both enhanced water permeability and improved selectivity due to the unique features of the AQP protein water channel that permits water molecules and rejects all other components. In this study, a prototype forward osmosis (FO) Aquaporin Inside™ membrane (AIM) was evaluated in terms of intrinsic filtration properties, membrane surface chemistry and fouling behaviour, and compared with a commercial FO membrane. The surface of the prototype AIM appeared to be a modified semi-aromatic polyamide layer instead of fully-aromatic as in other conventional FO products. As a result, compared to the commercial FO membrane, the prototype AIM shows higher water flux and comparable reverse salt flux (RSF) when tested under identical conditions. Due to the lower RSF, the AIM had less organic fouling by a sodium alginate solution when calcium chloride (CaCl2) was used as the draw solution (DS). The membrane integrity of the prototype AIM was maintained after repeated cycles of fouling by high concentration of gypsum and physical cleaning tests. This demonstrates the possibility of using the AIM membrane for treating harsh feed solutions. NRF (Natl Research Foundation, S’pore) EDB (Economic Devt. Board, S’pore) 2020-06-15T01:27:43Z 2020-06-15T01:27:43Z 2018 Journal Article Chun, Y., Qing, L., Sun, G., Muhammad Roil Bilad, Fane, A. G., & Chong, T. H. (2018). Prototype aquaporin-based forward osmosis membrane : filtration properties and fouling resistance. Desalination, 445, 75-84. doi:10.1016/j.desal.2018.07.030 0011-9164 https://hdl.handle.net/10356/141997 10.1016/j.desal.2018.07.030 2-s2.0-85050916295 445 75 84 en Desalination © 2018 Elsevier B.V. All rights reserved.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Engineering::Environmental engineering
Aquaporin Based Membrane
Forward Osmosis
spellingShingle Engineering::Environmental engineering
Aquaporin Based Membrane
Forward Osmosis
Chun, Youngpil
Qing, Luo
Sun, Guofei
Muhammad Roil Bilad
Fane, Anthony Gordon
Chong, Tzzy Haur
Prototype aquaporin-based forward osmosis membrane : filtration properties and fouling resistance
description The trade-off between water permeability and selectivity is considered as the biggest challenge during membrane fabrication for water purification. The aquaporin (AQP)-based biomimetic membrane has been proven to have both enhanced water permeability and improved selectivity due to the unique features of the AQP protein water channel that permits water molecules and rejects all other components. In this study, a prototype forward osmosis (FO) Aquaporin Inside™ membrane (AIM) was evaluated in terms of intrinsic filtration properties, membrane surface chemistry and fouling behaviour, and compared with a commercial FO membrane. The surface of the prototype AIM appeared to be a modified semi-aromatic polyamide layer instead of fully-aromatic as in other conventional FO products. As a result, compared to the commercial FO membrane, the prototype AIM shows higher water flux and comparable reverse salt flux (RSF) when tested under identical conditions. Due to the lower RSF, the AIM had less organic fouling by a sodium alginate solution when calcium chloride (CaCl2) was used as the draw solution (DS). The membrane integrity of the prototype AIM was maintained after repeated cycles of fouling by high concentration of gypsum and physical cleaning tests. This demonstrates the possibility of using the AIM membrane for treating harsh feed solutions.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Chun, Youngpil
Qing, Luo
Sun, Guofei
Muhammad Roil Bilad
Fane, Anthony Gordon
Chong, Tzzy Haur
format Article
author Chun, Youngpil
Qing, Luo
Sun, Guofei
Muhammad Roil Bilad
Fane, Anthony Gordon
Chong, Tzzy Haur
author_sort Chun, Youngpil
title Prototype aquaporin-based forward osmosis membrane : filtration properties and fouling resistance
title_short Prototype aquaporin-based forward osmosis membrane : filtration properties and fouling resistance
title_full Prototype aquaporin-based forward osmosis membrane : filtration properties and fouling resistance
title_fullStr Prototype aquaporin-based forward osmosis membrane : filtration properties and fouling resistance
title_full_unstemmed Prototype aquaporin-based forward osmosis membrane : filtration properties and fouling resistance
title_sort prototype aquaporin-based forward osmosis membrane : filtration properties and fouling resistance
publishDate 2020
url https://hdl.handle.net/10356/141997
_version_ 1681058281016000512