Novel dual-layer hollow fiber membranes applied for forward osmosis process

A novel dual-layer forward osmosis (FO) hollow fiber membrane has been designed and successfully fabricated by using a triple orifice spinneret. The fiber consists of two layers made from polyamide-imide (PAI) polymer for the outer layer and polyethersulfone (PES) polymer for the porous inner layer....

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Main Authors: Setiawan, Laurentia, Wang, Rong, Shi, Lei, Li, Kang, Fane, Anthony Gordon
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2013
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Online Access:https://hdl.handle.net/10356/99941
http://hdl.handle.net/10220/13621
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-999412020-03-07T11:43:47Z Novel dual-layer hollow fiber membranes applied for forward osmosis process Setiawan, Laurentia Wang, Rong Shi, Lei Li, Kang Fane, Anthony Gordon School of Civil and Environmental Engineering Singapore Membrane Technology Centre DRNTU::Engineering::Civil engineering DRNTU::Engineering::Environmental engineering A novel dual-layer forward osmosis (FO) hollow fiber membrane has been designed and successfully fabricated by using a triple orifice spinneret. The fiber consists of two layers made from polyamide-imide (PAI) polymer for the outer layer and polyethersulfone (PES) polymer for the porous inner layer. Specifically, after obtaining asymmetric microporous PAI/PES dual-layer hollow fibers via non-solvent induced phase inversion, polyethyleneimine (PEI) polyelectrolyte modification on the outer PAI layer was applied to produce a nanofiltration (NF)-like thin layer, while the PES porous inner layer remained intact as PES is inert to PEI. The membrane morphology, structure and surface property were carefully tailored by adjusting polymer dope composition and spinning conditions. These membranes were subsequently characterized by a series of standard protocols in terms of membrane structure, permeability and salt rejection, and were utilized in FO process. It was found that the resultant dual-layer NF hollow fiber membrane can achieve pure water permeability of 15.9 l m−2 h−1 bar−1 and a high rejection to divalent cations up to 89%. In FO process, the dual-layer hollow fiber exhibited a water flux of 27.5 l m−2 h−1 in the orientation of active layer facing feed water by using 0.5 M MgCl2 as draw solution and de-ionized (DI) water as feed at room temperature. The newly developed dual layer hollow fibers outperform all the single layer and dual-layer NF hollow fibers reported in the literature for FO applications. 2013-09-24T03:55:24Z 2019-12-06T20:13:51Z 2013-09-24T03:55:24Z 2019-12-06T20:13:51Z 2012 2012 Journal Article Setiawan, L., Wang, R., Shi, L., Li, K., & Fane, A. G. (2012). Novel dual-layer hollow fiber membranes applied for forward osmosis process. Journal of membrane science, 421-422, 238-246. https://hdl.handle.net/10356/99941 http://hdl.handle.net/10220/13621 10.1016/j.memsci.2012.07.020 en Journal of membrane science
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Civil engineering
DRNTU::Engineering::Environmental engineering
spellingShingle DRNTU::Engineering::Civil engineering
DRNTU::Engineering::Environmental engineering
Setiawan, Laurentia
Wang, Rong
Shi, Lei
Li, Kang
Fane, Anthony Gordon
Novel dual-layer hollow fiber membranes applied for forward osmosis process
description A novel dual-layer forward osmosis (FO) hollow fiber membrane has been designed and successfully fabricated by using a triple orifice spinneret. The fiber consists of two layers made from polyamide-imide (PAI) polymer for the outer layer and polyethersulfone (PES) polymer for the porous inner layer. Specifically, after obtaining asymmetric microporous PAI/PES dual-layer hollow fibers via non-solvent induced phase inversion, polyethyleneimine (PEI) polyelectrolyte modification on the outer PAI layer was applied to produce a nanofiltration (NF)-like thin layer, while the PES porous inner layer remained intact as PES is inert to PEI. The membrane morphology, structure and surface property were carefully tailored by adjusting polymer dope composition and spinning conditions. These membranes were subsequently characterized by a series of standard protocols in terms of membrane structure, permeability and salt rejection, and were utilized in FO process. It was found that the resultant dual-layer NF hollow fiber membrane can achieve pure water permeability of 15.9 l m−2 h−1 bar−1 and a high rejection to divalent cations up to 89%. In FO process, the dual-layer hollow fiber exhibited a water flux of 27.5 l m−2 h−1 in the orientation of active layer facing feed water by using 0.5 M MgCl2 as draw solution and de-ionized (DI) water as feed at room temperature. The newly developed dual layer hollow fibers outperform all the single layer and dual-layer NF hollow fibers reported in the literature for FO applications.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Setiawan, Laurentia
Wang, Rong
Shi, Lei
Li, Kang
Fane, Anthony Gordon
format Article
author Setiawan, Laurentia
Wang, Rong
Shi, Lei
Li, Kang
Fane, Anthony Gordon
author_sort Setiawan, Laurentia
title Novel dual-layer hollow fiber membranes applied for forward osmosis process
title_short Novel dual-layer hollow fiber membranes applied for forward osmosis process
title_full Novel dual-layer hollow fiber membranes applied for forward osmosis process
title_fullStr Novel dual-layer hollow fiber membranes applied for forward osmosis process
title_full_unstemmed Novel dual-layer hollow fiber membranes applied for forward osmosis process
title_sort novel dual-layer hollow fiber membranes applied for forward osmosis process
publishDate 2013
url https://hdl.handle.net/10356/99941
http://hdl.handle.net/10220/13621
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