Innovative stimuli-responsive membrane MSF brine rejection dilution by tertiary treated sewage effluent.

Khanafer, D; Altaee, A; Hawari, AH; Zhou, J; Alsaka, L

Innovative stimuli-responsive membrane MSF brine rejection dilution by tertiary treated sewage effluent.

Khanafer, D Altaee, A

Hawari, AH Zhou, J

Alsaka, L

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: J Environ Manage, 2024, 365, pp. 121517
Issue Date:: 2024-06-21

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Field	Value	Language
dc.contributor.author	Khanafer, D
dc.contributor.author	Altaee, A https://orcid.org/0000-0001-9764-3974
dc.contributor.author	Hawari, AH
dc.contributor.author	Zhou, J https://orcid.org/0000-0003-1393-1608
dc.contributor.author	Alsaka, L
dc.date.accessioned	2024-06-25T09:56:42Z
dc.date.available	2024-06-16
dc.date.available	2024-06-25T09:56:42Z
dc.date.issued	2024-06-21
dc.identifier.citation	J Environ Manage, 2024, 365, pp. 121517
dc.identifier.issn	0301-4797
dc.identifier.issn	1095-8630
dc.identifier.uri	http://hdl.handle.net/10453/179645
dc.description.abstract	In this study, treated wastewater and Multi-Stage Flash (MSF) brine were integrated into the Forward Osmosis (FO) system using pressure stimuli-responsive Nanofiltration (PSRNF) membranes to dilute magnesium, calcium, and sulfate MSF plant brine reject. The deposition of magnesium sulfate and calcium sulfate in the heat exchanger is one of the main issues affecting the performance and efficiency of MSF thermal desalination plants. Reducing the concentration of the divalent ions can minimize scale formation and deposition to a level that allows the MSF plant to operate at high top brine temperature (TBT) and without scale problems. The PSRNF membranes were chosen in the FO process because of their high water permeability, rejection of divalent and monovalent ions, small structure parameter (S), and inexpensiveness compared to commercial FO membranes. Three PSRNF membranes were tested in the FO process with the feed solution facing the active membrane layer to avoid active layer delamination. Although the PSRNF membrane exhibited negligible water flux at 0 bar, it increased when a 2-4 bar was applied to the feed solution. The wastewater temperature was set at 25 °C while 40 °C was the brine operational temperature to mimic the field situation. A maximum average water flux of 39.5 L/m2h was recorded at 4 bar feed pressure when the PSRNF membrane was used for the brine dilution, achieving up to 42% divalent ions dilution at 0.02 kWh/m3 specific power consumption. The average water flux in the PRSNF membrane was 35% higher than that in the commercial TFC FO membrane. Notably, the PSRNF membrane is ten times cheaper than commercial FO membranes. Notably, the PSRNF membrane is ten times cheaper than commercial FO membranes, achieving substantial cost reductions and pioneering advancements in FO purification technology.
dc.language	eng
dc.publisher	Elsevier BV
dc.relation.ispartof	J Environ Manage
dc.relation.isbasedon	10.1016/j.jenvman.2024.121517
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.classification	Environmental Sciences
dc.title	Innovative stimuli-responsive membrane MSF brine rejection dilution by tertiary treated sewage effluent.
dc.type	Journal Article
utslib.citation.volume	365
utslib.location.activity	England
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
pubs.organisational-group	University of Technology Sydney/Strength - CGT - Centre for Green Technology
utslib.copyright.status	open_access	*
dc.rights.license	This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0). To view a copy of this license, visit https://creativecommons.org/licenses/by/4.0/
dc.date.updated	2024-06-25T09:56:18Z
pubs.publication-status	Published online
pubs.volume	365

Abstract:

In this study, treated wastewater and Multi-Stage Flash (MSF) brine were integrated into the Forward Osmosis (FO) system using pressure stimuli-responsive Nanofiltration (PSRNF) membranes to dilute magnesium, calcium, and sulfate MSF plant brine reject. The deposition of magnesium sulfate and calcium sulfate in the heat exchanger is one of the main issues affecting the performance and efficiency of MSF thermal desalination plants. Reducing the concentration of the divalent ions can minimize scale formation and deposition to a level that allows the MSF plant to operate at high top brine temperature (TBT) and without scale problems. The PSRNF membranes were chosen in the FO process because of their high water permeability, rejection of divalent and monovalent ions, small structure parameter (S), and inexpensiveness compared to commercial FO membranes. Three PSRNF membranes were tested in the FO process with the feed solution facing the active membrane layer to avoid active layer delamination. Although the PSRNF membrane exhibited negligible water flux at 0 bar, it increased when a 2-4 bar was applied to the feed solution. The wastewater temperature was set at 25 °C while 40 °C was the brine operational temperature to mimic the field situation. A maximum average water flux of 39.5 L/m2h was recorded at 4 bar feed pressure when the PSRNF membrane was used for the brine dilution, achieving up to 42% divalent ions dilution at 0.02 kWh/m3 specific power consumption. The average water flux in the PRSNF membrane was 35% higher than that in the commercial TFC FO membrane. Notably, the PSRNF membrane is ten times cheaper than commercial FO membranes. Notably, the PSRNF membrane is ten times cheaper than commercial FO membranes, achieving substantial cost reductions and pioneering advancements in FO purification technology.

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