Modification of GO-based pervaporation membranes to improve stability in oscillating temperature operation

Cha-umpong, W; Mayyas, M; Razmjou, A; Chen, V

Modification of GO-based pervaporation membranes to improve stability in oscillating temperature operation

Cha-umpong, W Mayyas, M Razmjou, A Chen, V

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Desalination, 2021, 516, pp. 115215-115215
Issue Date:: 2021-11-15

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Field	Value	Language
dc.contributor.author	Cha-umpong, W
dc.contributor.author	Mayyas, M
dc.contributor.author	Razmjou, A
dc.contributor.author	Chen, V
dc.date.accessioned	2021-10-20T04:18:18Z
dc.date.available	2021-10-20T04:18:18Z
dc.date.issued	2021-11-15
dc.identifier.citation	Desalination, 2021, 516, pp. 115215-115215
dc.identifier.issn	0011-9164
dc.identifier.uri	http://hdl.handle.net/10453/151162
dc.description.abstract	Graphene oxide (GO)-based pervaporation membranes have great potential for desalination and lithium containing brine enrichment. However, they experienced critical challenges when used in aqueous solution and exposed to oscillating temperatures due to swelling and microdefects. In this work, the GO-based membranes were fabricated by the filtration of GO suspension with sulfonate-containing diamine molecules on porous substrates, then dip-coated with chitosan and polyvinyl alcohol (PVA). The resultant GO-based membranes demonstrated 99.99% salt rejection during pervaporation using NaCl or lithium-containing concentrated inland brine with humic acid as the feed solution under oscillating temperature. The intercalation of diamine molecules inside the GO nanochannels was able to increase water flux by 20% while the coated chitosan/PVA layer reduced structural defects and undesired scaling/fouling on the membrane surface resulting in minimal reduction of water flux (16%) over 72 h of oscillating temperature pervaporation. Moreover, the membrane exhibited good stability after chemical cleaning. The proposed GO-based membranes provided significant performance sustainability in concentrated inland brine and oscillating feed temperature condition.
dc.language	en
dc.publisher	Elsevier BV
dc.relation.ispartof	Desalination
dc.relation.isbasedon	10.1016/j.desal.2021.115215
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	03 Chemical Sciences, 09 Engineering
dc.subject.classification	Chemical Engineering
dc.title	Modification of GO-based pervaporation membranes to improve stability in oscillating temperature operation
dc.type	Journal Article
utslib.citation.volume	516
utslib.for	03 Chemical Sciences
utslib.for	09 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
utslib.copyright.status	closed_access	*
dc.date.updated	2021-10-20T04:18:16Z
pubs.publication-status	Accepted
pubs.volume	516

Abstract:

Graphene oxide (GO)-based pervaporation membranes have great potential for desalination and lithium containing brine enrichment. However, they experienced critical challenges when used in aqueous solution and exposed to oscillating temperatures due to swelling and microdefects. In this work, the GO-based membranes were fabricated by the filtration of GO suspension with sulfonate-containing diamine molecules on porous substrates, then dip-coated with chitosan and polyvinyl alcohol (PVA). The resultant GO-based membranes demonstrated 99.99% salt rejection during pervaporation using NaCl or lithium-containing concentrated inland brine with humic acid as the feed solution under oscillating temperature. The intercalation of diamine molecules inside the GO nanochannels was able to increase water flux by 20% while the coated chitosan/PVA layer reduced structural defects and undesired scaling/fouling on the membrane surface resulting in minimal reduction of water flux (16%) over 72 h of oscillating temperature pervaporation. Moreover, the membrane exhibited good stability after chemical cleaning. The proposed GO-based membranes provided significant performance sustainability in concentrated inland brine and oscillating feed temperature condition.

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http://hdl.handle.net/10453/151162