W5ater desalination using graphene-enhanced electrospun nanofiber membrane via air gap membrane distillation

Woo, YC; Tijing, LD; Shim, WG; Choi, JS; Kim, SH; He, T; Drioli, E; Shon, HK

W5ater desalination using graphene-enhanced electrospun nanofiber membrane via air gap membrane distillation

Woo, YC

Tijing, LD

Shim, WG Choi, JS Kim, SH He, T Drioli, E Shon, HK

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Publication Type:: Journal Article
Citation:: Journal of Membrane Science, 2016, 520 pp. 99 - 110
Issue Date:: 2016-12-15

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Field	Value	Language
dc.contributor.author	Woo, YC https://orcid.org/0000-0003-0847-3067	en_US
dc.contributor.author	Tijing, LD https://orcid.org/0000-0001-9398-6355	en_US
dc.contributor.author	Shim, WG	en_US
dc.contributor.author	Choi, JS	en_US
dc.contributor.author	Kim, SH	en_US
dc.contributor.author	He, T	en_US
dc.contributor.author	Drioli, E	en_US
dc.contributor.author	Shon, HK https://orcid.org/0000-0002-3777-7169	en_US
dc.date.available	2020-05-25T19:26:45Z
dc.date.issued	2016-12-15	en_US
dc.identifier.citation	Journal of Membrane Science, 2016, 520 pp. 99 - 110	en_US
dc.identifier.issn	0376-7388	en_US
dc.identifier.uri	http://hdl.handle.net/10453/49958
dc.description.abstract	© 2016 This study demonstrates the preparation and desalination performance via air gap membrane distillation (AGMD) of a graphene-loaded electrospun nanofiber membrane. Different concentrations of graphene (0–10 wt%) were incorporated in/on electrospun polyvinylidene fluoride-co-hexafluoropropylene (PH) membrane to obtain a robust, and superhydrophobic nanocomposite membrane. The results showed that graphene incorporation has significantly enhanced the membrane structure and properties with an optimal concentration of 5 wt% (i.e., G5PH). Characterization of G5PH revealed membrane porosity of >88%, contact angle of >162° (superhydrophobic), and high liquid entry pressure (LEP) of >186 kPa. These favourable properties led to a high and stable AGMD flux of 22.9 L/m2 h or LMH (compared with ~4.8 LMH for the commercial PVDF flat-sheet membrane) and excellent salt rejection (100%) for 60 h of operation using 3.5 wt% NaCl solution as feed (feed and coolant inlet temperatures of 60 and 20 °C, respectively). A two-dimensional dynamic model to investigate the flux profile of the graphene/PH membrane is also introduced. The present study suggests that exploiting the interesting properties of nanofibers and graphene nanofillers through a facile electrospinning technique provides high potential towards the fabrication of a robust and high-performance AGMD membrane.	en_US
dc.relation	http://purl.org/au-research/grants/arc/FT140101208
dc.relation.ispartof	Journal of Membrane Science	en_US
dc.relation.isbasedon	10.1016/j.memsci.2016.07.049	en_US
dc.subject.classification	Chemical Engineering	en_US
dc.title	W5ater desalination using graphene-enhanced electrospun nanofiber membrane via air gap membrane distillation	en_US
dc.type	Journal Article
utslib.citation.volume	520	en_US
utslib.for	090404 Membrane and Separation Technologies	en_US
utslib.for	090409 Wastewater Treatment Processes	en_US
utslib.for	090407 Process Control and Simulation	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	09 Engineering	en_US
pubs.embargo.period	Not known	en_US
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	open_access
pubs.publication-status	Published	en_US
pubs.volume	520	en_US

Abstract:

© 2016 This study demonstrates the preparation and desalination performance via air gap membrane distillation (AGMD) of a graphene-loaded electrospun nanofiber membrane. Different concentrations of graphene (0–10 wt%) were incorporated in/on electrospun polyvinylidene fluoride-co-hexafluoropropylene (PH) membrane to obtain a robust, and superhydrophobic nanocomposite membrane. The results showed that graphene incorporation has significantly enhanced the membrane structure and properties with an optimal concentration of 5 wt% (i.e., G5PH). Characterization of G5PH revealed membrane porosity of >88%, contact angle of >162° (superhydrophobic), and high liquid entry pressure (LEP) of >186 kPa. These favourable properties led to a high and stable AGMD flux of 22.9 L/m2 h or LMH (compared with ~4.8 LMH for the commercial PVDF flat-sheet membrane) and excellent salt rejection (100%) for 60 h of operation using 3.5 wt% NaCl solution as feed (feed and coolant inlet temperatures of 60 and 20 °C, respectively). A two-dimensional dynamic model to investigate the flux profile of the graphene/PH membrane is also introduced. The present study suggests that exploiting the interesting properties of nanofibers and graphene nanofillers through a facile electrospinning technique provides high potential towards the fabrication of a robust and high-performance AGMD membrane.

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http://hdl.handle.net/10453/49958