Triple-layer nanofiber membrane with improved energy efficiency for treatment of hypersaline solution via membrane distillation

Afsari, M; Shirazi, MMA; Ghorbani, AH; Sayar, O; Shon, HK; Tijing, LD

Triple-layer nanofiber membrane with improved energy efficiency for treatment of hypersaline solution via membrane distillation

Afsari, M Shirazi, MMA Ghorbani, AH Sayar, O Shon, HK Tijing, LD

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Publisher:: ELSEVIER SCI LTD
Publication Type:: Journal Article
Citation:: Journal of Environmental Chemical Engineering, 2023, 11, (5)
Issue Date:: 2023-10-01

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Field	Value	Language
dc.contributor.author	Afsari, M
dc.contributor.author	Shirazi, MMA
dc.contributor.author	Ghorbani, AH
dc.contributor.author	Sayar, O
dc.contributor.author	Shon, HK
dc.contributor.author	Tijing, LD
dc.date.accessioned	2024-04-11T04:51:56Z
dc.date.available	2024-04-11T04:51:56Z
dc.date.issued	2023-10-01
dc.identifier.citation	Journal of Environmental Chemical Engineering, 2023, 11, (5)
dc.identifier.issn	2213-2929
dc.identifier.issn	2213-3437
dc.identifier.uri	http://hdl.handle.net/10453/177732
dc.description.abstract	A new triple-layer, electrospun nanofiber membrane was fabricated in sequential electrospinning steps for enhancing the thermal efficiency of the membrane for desalination of high-salinity solution in a membrane distillation process. The membrane structure is designed to form a Janus structure comprised of two hydrophobic layers made of polyvinylidene fluoride and polystyrene at the top and middle, respectively, and one hydrophilic layer made of polyacrylonitrile at the bottom layer (support). The low thermal conductivity of the polystyrene layer and the Janus structure of the membrane could considerably enhance the flux and thermal performance of the membrane for desalination of hypersaline solution. The experimental results demonstrated that the designed membrane achieved high permeate flux and high energy efficiency compared with single and dual-layer membranes when used for treatment of high salinity solution. The results further showed that increasing feedwater salinity dropped the permeate flux of the single-layer membrane by over 50 % and reached 10 L/m2h, while for the triple-layer membrane, it just dropped 20 % for the feed salinity of 200 g/l. Moreover, the triple-layer membrane showed 20 % higher energy efficiency at the same operation conditions. Furthermore, a simulation model was developed and validated via the experimental results to understand the effect of various parameters.
dc.language	English
dc.publisher	ELSEVIER SCI LTD
dc.relation	http://purl.org/au-research/grants/arc/IH210100001
dc.relation.ispartof	Journal of Environmental Chemical Engineering
dc.relation.isbasedon	10.1016/j.jece.2023.110638
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.subject	0306 Physical Chemistry (incl. Structural), 0904 Chemical Engineering, 0907 Environmental Engineering
dc.subject.classification	3406 Physical chemistry
dc.subject.classification	4004 Chemical engineering
dc.subject.classification	4011 Environmental engineering
dc.title	Triple-layer nanofiber membrane with improved energy efficiency for treatment of hypersaline solution via membrane distillation
dc.type	Journal Article
utslib.citation.volume	11
utslib.for	0306 Physical Chemistry (incl. Structural)
utslib.for	0904 Chemical Engineering
utslib.for	0907 Environmental Engineering
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	in_progress	*
dc.date.updated	2024-04-11T04:51:46Z
pubs.issue	5
pubs.publication-status	Published
pubs.volume	11
utslib.citation.issue	5

Abstract:

A new triple-layer, electrospun nanofiber membrane was fabricated in sequential electrospinning steps for enhancing the thermal efficiency of the membrane for desalination of high-salinity solution in a membrane distillation process. The membrane structure is designed to form a Janus structure comprised of two hydrophobic layers made of polyvinylidene fluoride and polystyrene at the top and middle, respectively, and one hydrophilic layer made of polyacrylonitrile at the bottom layer (support). The low thermal conductivity of the polystyrene layer and the Janus structure of the membrane could considerably enhance the flux and thermal performance of the membrane for desalination of hypersaline solution. The experimental results demonstrated that the designed membrane achieved high permeate flux and high energy efficiency compared with single and dual-layer membranes when used for treatment of high salinity solution. The results further showed that increasing feedwater salinity dropped the permeate flux of the single-layer membrane by over 50 % and reached 10 L/m2h, while for the triple-layer membrane, it just dropped 20 % for the feed salinity of 200 g/l. Moreover, the triple-layer membrane showed 20 % higher energy efficiency at the same operation conditions. Furthermore, a simulation model was developed and validated via the experimental results to understand the effect of various parameters.

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http://hdl.handle.net/10453/177732