Effects of scaling and cleaning on the performance of forward osmosis hollow fiber membranes

Forward osmosis (FO) process as an alternative to conventional desalination techniques has attracted much attention in recent years. Since mineral salt scaling is one of the major limitations for seawater desalination, the current study focused on the behaviors of thin film composite (TFC) FO hollow...

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Main Authors: Arkhangelsky, Elizabeth, Wicaksana, Filicia, Chou, Shuren, Al-Rabiah, Abdulrahman A., Al-Zahrani, Saeed M., Wang, Rong
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2013
Online Access:https://hdl.handle.net/10356/100359
http://hdl.handle.net/10220/13616
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1003592020-03-07T11:43:48Z Effects of scaling and cleaning on the performance of forward osmosis hollow fiber membranes Arkhangelsky, Elizabeth Wicaksana, Filicia Chou, Shuren Al-Rabiah, Abdulrahman A. Al-Zahrani, Saeed M. Wang, Rong School of Civil and Environmental Engineering Singapore Membrane Technology Centre Forward osmosis (FO) process as an alternative to conventional desalination techniques has attracted much attention in recent years. Since mineral salt scaling is one of the major limitations for seawater desalination, the current study focused on the behaviors of thin film composite (TFC) FO hollow fibers, which were fabricated in our laboratory, under the circumstance of calcium sulfate (CaSO4) scaling with sodium chloride as draw solution. The performance of FO hollow fiber membranes was compared with commercially available FO flat sheet membranes. Several cleaning strategies were also explored. Depending on the membrane orientation, experimental results suggested that the scaling of the FO hollow fibers was dominated by cake layer formation along with pore blocking in the orientation of active layer facing draw solution (AL-DS). The pore blocking could be a result of the penetration of crystals from the feed solution into the support matrix of the membrane, or the formation of crystals inside the porous support layer. At the same driving force, the water flux of the FO hollow fibers in the orientation of active layer facing feed solution (AL-FS) was twice higher than the water flux of the flat sheet membrane in both orientations. The water flux of scaled FO hollow fibers and flat sheet membranes in the AL-DS orientation could be successfully restored by hydraulic backwash procedure. To the best of our knowledge, this is the first study to examine the inorganic scaling of FO membranes in the AL-DS orientation. 2013-09-23T08:43:41Z 2019-12-06T20:21:07Z 2013-09-23T08:43:41Z 2019-12-06T20:21:07Z 2012 2012 Journal Article Arkhangelsky, E., Wicaksana, F., Chou, S., Al-Rabiah, A. A., Al-Zahrani, S. M.,& Wang, R. (2012). Effects of scaling and cleaning on the performance of forward osmosis hollow fiber membranes. Journal of Membrane Science, 415-416101-108. https://hdl.handle.net/10356/100359 http://hdl.handle.net/10220/13616 10.1016/j.memsci.2012.04.041 en Journal of membrane science
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
description Forward osmosis (FO) process as an alternative to conventional desalination techniques has attracted much attention in recent years. Since mineral salt scaling is one of the major limitations for seawater desalination, the current study focused on the behaviors of thin film composite (TFC) FO hollow fibers, which were fabricated in our laboratory, under the circumstance of calcium sulfate (CaSO4) scaling with sodium chloride as draw solution. The performance of FO hollow fiber membranes was compared with commercially available FO flat sheet membranes. Several cleaning strategies were also explored. Depending on the membrane orientation, experimental results suggested that the scaling of the FO hollow fibers was dominated by cake layer formation along with pore blocking in the orientation of active layer facing draw solution (AL-DS). The pore blocking could be a result of the penetration of crystals from the feed solution into the support matrix of the membrane, or the formation of crystals inside the porous support layer. At the same driving force, the water flux of the FO hollow fibers in the orientation of active layer facing feed solution (AL-FS) was twice higher than the water flux of the flat sheet membrane in both orientations. The water flux of scaled FO hollow fibers and flat sheet membranes in the AL-DS orientation could be successfully restored by hydraulic backwash procedure. To the best of our knowledge, this is the first study to examine the inorganic scaling of FO membranes in the AL-DS orientation.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Arkhangelsky, Elizabeth
Wicaksana, Filicia
Chou, Shuren
Al-Rabiah, Abdulrahman A.
Al-Zahrani, Saeed M.
Wang, Rong
format Article
author Arkhangelsky, Elizabeth
Wicaksana, Filicia
Chou, Shuren
Al-Rabiah, Abdulrahman A.
Al-Zahrani, Saeed M.
Wang, Rong
spellingShingle Arkhangelsky, Elizabeth
Wicaksana, Filicia
Chou, Shuren
Al-Rabiah, Abdulrahman A.
Al-Zahrani, Saeed M.
Wang, Rong
Effects of scaling and cleaning on the performance of forward osmosis hollow fiber membranes
author_sort Arkhangelsky, Elizabeth
title Effects of scaling and cleaning on the performance of forward osmosis hollow fiber membranes
title_short Effects of scaling and cleaning on the performance of forward osmosis hollow fiber membranes
title_full Effects of scaling and cleaning on the performance of forward osmosis hollow fiber membranes
title_fullStr Effects of scaling and cleaning on the performance of forward osmosis hollow fiber membranes
title_full_unstemmed Effects of scaling and cleaning on the performance of forward osmosis hollow fiber membranes
title_sort effects of scaling and cleaning on the performance of forward osmosis hollow fiber membranes
publishDate 2013
url https://hdl.handle.net/10356/100359
http://hdl.handle.net/10220/13616
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