Silicene nanosheets as support fillers for thin film composite forward osmosis membranes

Bendoy, AP; Zeweldi, HG; Park, MJ; Shon, HK; Kim, H; Chung, WJ; Nisola, GM

Silicene nanosheets as support fillers for thin film composite forward osmosis membranes

Bendoy, AP Zeweldi, HG Park, MJ Shon, HK Kim, H Chung, WJ Nisola, GM

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Desalination, 2022, 536, pp. 115817
Issue Date:: 2022-08-15

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Field	Value	Language
dc.contributor.author	Bendoy, AP
dc.contributor.author	Zeweldi, HG
dc.contributor.author	Park, MJ
dc.contributor.author	Shon, HK
dc.contributor.author	Kim, H
dc.contributor.author	Chung, WJ
dc.contributor.author	Nisola, GM
dc.date.accessioned	2022-07-30T01:21:06Z
dc.date.available	2022-07-30T01:21:06Z
dc.date.issued	2022-08-15
dc.identifier.citation	Desalination, 2022, 536, pp. 115817
dc.identifier.issn	0011-9164
dc.identifier.uri	http://hdl.handle.net/10453/159393
dc.description.abstract	Development of membranes with enhanced separation and transport properties remains crucial for the advancement of forward osmosis (FO). Herein, a novel thin film composite (TFC) FO membrane with silicene-loaded polysulfone support (SN) is reported. Silicene loading was varied to obtain different SNs grown with polyamide (PA) layers to afford TFC-SN FO membranes. Characterization results reveal that optimal silicene loading (0.25 wt%) produced the most porous and most hydrophilic SN0.25 with finger-like pore structures. Low silicene loading showed minimal impact, whereas, excessive addition resulted in aggregation which diminished its effect in SN. Meanwhile, silicene had no influence on PA layer formation as all TFC-SNs registered similar solute permeability coefficient B = 0.14–0.16 LMH. On the other hand, TFC-SN0.25 achieved the highest water permeability coefficient A = 1.56 LMH bar−1 attributable to the favorable properties of SN0.25. TFC-SN0.25 also exhibited the lowest structural parameter S = 334 μm, which explains its superior FO performance relative to other TFC-SNs. Results from FO runs indicate that internal concentration polarization was reduced by 27.5–33% in TFC-SN0.25 compared with the control (TFC-SN0). FO runs in simulated low salinity water and seawater feed highlight the potential of TFC-SN0.25 for desalination. The developed TFC-SN0.25 can be repeatedly used and deliver consistent Jv values. Overall findings demonstrate the benefits of silicene for improved performance of TFC FO membranes.
dc.language	en
dc.publisher	Elsevier BV
dc.relation	http://purl.org/au-research/grants/arc/IH170100009
dc.relation.ispartof	Desalination
dc.relation.isbasedon	10.1016/j.desal.2022.115817
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	03 Chemical Sciences, 09 Engineering
dc.subject.classification	Chemical Engineering
dc.title	Silicene nanosheets as support fillers for thin film composite forward osmosis membranes
dc.type	Journal Article
utslib.citation.volume	536
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
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	closed_access	*
dc.date.updated	2022-07-30T01:21:03Z
pubs.publication-status	Accepted
pubs.volume	536

Abstract:

Development of membranes with enhanced separation and transport properties remains crucial for the advancement of forward osmosis (FO). Herein, a novel thin film composite (TFC) FO membrane with silicene-loaded polysulfone support (SN) is reported. Silicene loading was varied to obtain different SNs grown with polyamide (PA) layers to afford TFC-SN FO membranes. Characterization results reveal that optimal silicene loading (0.25 wt%) produced the most porous and most hydrophilic SN0.25 with finger-like pore structures. Low silicene loading showed minimal impact, whereas, excessive addition resulted in aggregation which diminished its effect in SN. Meanwhile, silicene had no influence on PA layer formation as all TFC-SNs registered similar solute permeability coefficient B = 0.14–0.16 LMH. On the other hand, TFC-SN0.25 achieved the highest water permeability coefficient A = 1.56 LMH bar−1 attributable to the favorable properties of SN0.25. TFC-SN0.25 also exhibited the lowest structural parameter S = 334 μm, which explains its superior FO performance relative to other TFC-SNs. Results from FO runs indicate that internal concentration polarization was reduced by 27.5–33% in TFC-SN0.25 compared with the control (TFC-SN0). FO runs in simulated low salinity water and seawater feed highlight the potential of TFC-SN0.25 for desalination. The developed TFC-SN0.25 can be repeatedly used and deliver consistent Jv values. Overall findings demonstrate the benefits of silicene for improved performance of TFC FO membranes.

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http://hdl.handle.net/10453/159393