Synthesis of polybenzimidazole (PBI) forward osmosis (FO) membrane and computational fluid dynamics (CFD) modeling of concentration gradient across membrane surface

Akther, N; Daer, S; Wei, Q; Janajreh, I; Hasan, SW

Synthesis of polybenzimidazole (PBI) forward osmosis (FO) membrane and computational fluid dynamics (CFD) modeling of concentration gradient across membrane surface

Akther, N

Daer, S Wei, Q Janajreh, I Hasan, SW

Permalink

Publisher:: ELSEVIER SCIENCE BV
Publication Type:: Journal Article
Citation:: Desalination, 2019, 452, pp. 17-28
Issue Date:: 2019-02-15

Closed Access

	Filename	Description	Size
	Synthesis of polybenzimidazole (PBI) forward osmosis (FO) membrane and computational fluid dynamics (CFD) modeling of concentration gradient across membrane surface.pdf	Accepted version	2.55 MB	Adobe PDF	View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Akther, N https://orcid.org/0000-0001-8706-9542
dc.contributor.author	Daer, S
dc.contributor.author	Wei, Q
dc.contributor.author	Janajreh, I
dc.contributor.author	Hasan, SW
dc.date.accessioned	2020-11-11T08:18:09Z
dc.date.available	2020-11-11T08:18:09Z
dc.date.issued	2019-02-15
dc.identifier.citation	Desalination, 2019, 452, pp. 17-28
dc.identifier.issn	0011-9164
dc.identifier.issn	1873-4464
dc.identifier.uri	http://hdl.handle.net/10453/143907
dc.description.abstract	© 2018 Elsevier B.V. The aim of this research study was to synthesize and characterize asymmetric polybenzimidazole (PBI) FO flat sheet membranes for seawater desalination applications in high temperature and high salinity regions such as in Abu Dhabi (UAE). The membrane fabrication conditions that were considered during phase inversion method were membrane casting thickness, oven temperature and duration. The impact of draw and feed solution flow rates, draw solution type and concentration were also investigated. Results showed 2 M MgCl2 reported the highest water flux and salt rejection of 3.1 ± 0.2 LMH and 97.4 ± 1.3% when compared to NaCl and KBr (i.e. 2.6 ± 0.1 LMH and 96.9 ± 1.3%, and 2.3 ± 0.3 LMH and 95.9 ± 1.3%, respectively). Additionally, computational fluid dynamics (CFD) modeling was used to verify the experimental results and study the impact of concentration gradient across membrane film on water flux and salt rejection at different FO cell orientations. The water flux and salt rejection with 2 M MgCl2 draw solution increased from 3.6 ± 0.1 to 21.3 ± 0.2 LMH and 89.5 ± 1.2% to 96.3 ± 1.2%, respectively when the draw solution was allowed to flow in the top compartment of the membrane cell (orientation B). CFD modeling results demonstrated that solution density, gravity and diffusion rate affected FO performance at low cross-flow velocity.
dc.language	English
dc.publisher	ELSEVIER SCIENCE BV
dc.relation.ispartof	Desalination
dc.relation.isbasedon	10.1016/j.desal.2018.11.003
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.subject	03 Chemical Sciences, 09 Engineering
dc.subject.classification	Chemical Engineering
dc.title	Synthesis of polybenzimidazole (PBI) forward osmosis (FO) membrane and computational fluid dynamics (CFD) modeling of concentration gradient across membrane surface
dc.type	Journal Article
utslib.citation.volume	452
utslib.for	03 Chemical Sciences
utslib.for	09 Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
dc.date.updated	2020-11-11T08:18:01Z
pubs.publication-status	Published
pubs.volume	452

Abstract:

© 2018 Elsevier B.V. The aim of this research study was to synthesize and characterize asymmetric polybenzimidazole (PBI) FO flat sheet membranes for seawater desalination applications in high temperature and high salinity regions such as in Abu Dhabi (UAE). The membrane fabrication conditions that were considered during phase inversion method were membrane casting thickness, oven temperature and duration. The impact of draw and feed solution flow rates, draw solution type and concentration were also investigated. Results showed 2 M MgCl2 reported the highest water flux and salt rejection of 3.1 ± 0.2 LMH and 97.4 ± 1.3% when compared to NaCl and KBr (i.e. 2.6 ± 0.1 LMH and 96.9 ± 1.3%, and 2.3 ± 0.3 LMH and 95.9 ± 1.3%, respectively). Additionally, computational fluid dynamics (CFD) modeling was used to verify the experimental results and study the impact of concentration gradient across membrane film on water flux and salt rejection at different FO cell orientations. The water flux and salt rejection with 2 M MgCl2 draw solution increased from 3.6 ± 0.1 to 21.3 ± 0.2 LMH and 89.5 ± 1.2% to 96.3 ± 1.2%, respectively when the draw solution was allowed to flow in the top compartment of the membrane cell (orientation B). CFD modeling results demonstrated that solution density, gravity and diffusion rate affected FO performance at low cross-flow velocity.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/143907