, Performance of the Pressure Assisted Forward Osmosis-MSF Hybrid Desalination Plant

Altaee, A; Khanafer, D; Yadav, S; Ganbat, N; Zhou, J; Hawari, A

, Performance of the Pressure Assisted Forward Osmosis-MSF Hybrid Desalination Plant

Altaee, A

Khanafer, D Yadav, S Ganbat, N Zhou, J Hawari, A

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Publication Type:: Journal Article
Citation:: Water, 2021, (13), pp. 1-16
Issue Date:: 2021-04-29

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Field	Value	Language
dc.contributor.author	Altaee, A https://orcid.org/0000-0001-9764-3974
dc.contributor.author	Khanafer, D
dc.contributor.author	Yadav, S
dc.contributor.author	Ganbat, N
dc.contributor.author	Zhou, J
dc.contributor.author	Hawari, A
dc.date.accessioned	2021-04-29T11:36:03Z
dc.date.available	2021-04-27
dc.date.available	2021-04-29T11:36:03Z
dc.date.issued	2021-04-29
dc.identifier.citation	Water, 2021, (13), pp. 1-16
dc.identifier.uri	http://hdl.handle.net/10453/148545
dc.description.abstract	Osmotically driven membrane process was proposed for seawater pretreatment to multi-stage flashing (MSF) thermal plant. Brine reject from the MSF plant was the draw solution (DS) in the forward osmosis (FO) process in order to reduce chemical use. The purpose of FO is the removal of divalent ions from seawater prior the thermal desalination. In this study, seawater at 80 g/L and 45 g/L concentrations was used as the brine reject and seawater, respectively. The temperature of the brine reject was 40 oC and of seawater was 25 oC. Commercial thin-film composite (TFC) and cellulose triacetate (CTA) membranes were evaluated for the pretreatment of seawater in the FO and the pressure-assisted FO (PAFO) processes. Experimental results showed 50% more permeation flux by increasing the feed pressure from 1 to 4 bar, and permeation flux reached 16.7 L/m2h in the PAFO process with a TFC membrane compared to 8.3 L/m2h in the PAFO process with CTA membrane. TFC membrane experienced up to 15% reduction in permeation flux after cleaning with DI water while permeation flux reduction in the CTA membrane was > 6%. The maximum recovery rate was 11.5% and 8.8% in the PAFO process with TFC and CTA membrane, respectively. The maximum power consumption for the pretreatment of seawater was 0.06 kWh/m3 and 0.1 kWh/m3 for the PAFO process with a TFC and CTA membrane, respectively.
dc.language	en
dc.relation	Qatar National Research FundNPRP10-0117-170176
dc.relation.ispartof	Water
dc.relation.isbasedon	10.3390/w13091245
dc.rights	info:eu-repo/semantics/openAccess
dc.title	, Performance of the Pressure Assisted Forward Osmosis-MSF Hybrid Desalination Plant
dc.type	Journal Article
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.consider-herdc	false
dc.date.updated	2021-04-29T11:36:01Z
pubs.issue	13
pubs.publication-status	Published
utslib.citation.issue	13

Abstract:

Osmotically driven membrane process was proposed for seawater pretreatment to multi-stage flashing (MSF) thermal plant. Brine reject from the MSF plant was the draw solution (DS) in the forward osmosis (FO) process in order to reduce chemical use. The purpose of FO is the removal of divalent ions from seawater prior the thermal desalination. In this study, seawater at 80 g/L and 45 g/L concentrations was used as the brine reject and seawater, respectively. The temperature of the brine reject was 40 oC and of seawater was 25 oC. Commercial thin-film composite (TFC) and cellulose triacetate (CTA) membranes were evaluated for the pretreatment of seawater in the FO and the pressure-assisted FO (PAFO) processes. Experimental results showed 50% more permeation flux by increasing the feed pressure from 1 to 4 bar, and permeation flux reached 16.7 L/m2h in the PAFO process with a TFC membrane compared to 8.3 L/m2h in the PAFO process with CTA membrane. TFC membrane experienced up to 15% reduction in permeation flux after cleaning with DI water while permeation flux reduction in the CTA membrane was > 6%. The maximum recovery rate was 11.5% and 8.8% in the PAFO process with TFC and CTA membrane, respectively. The maximum power consumption for the pretreatment of seawater was 0.06 kWh/m3 and 0.1 kWh/m3 for the PAFO process with a TFC and CTA membrane, respectively.

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http://hdl.handle.net/10453/148545