Integrated photoelectrochemical (PEC)-forward osmosis (FO) system for hydrogen production and fertigation application

Zavahir, S; Elmakki, T; Gulied, M; Shon, HK; Park, H; Kakosimos, KE; Han, DS

Integrated photoelectrochemical (PEC)-forward osmosis (FO) system for hydrogen production and fertigation application

Zavahir, S Elmakki, T Gulied, M Shon, HK Park, H Kakosimos, KE Han, DS

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Publisher:: ELSEVIER SCI LTD
Publication Type:: Journal Article
Citation:: Journal of Environmental Chemical Engineering, 2023, 11, (5)
Issue Date:: 2023-10-01

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Field	Value	Language
dc.contributor.author	Zavahir, S
dc.contributor.author	Elmakki, T
dc.contributor.author	Gulied, M
dc.contributor.author	Shon, HK
dc.contributor.author	Park, H
dc.contributor.author	Kakosimos, KE
dc.contributor.author	Han, DS
dc.date.accessioned	2024-04-11T04:38:22Z
dc.date.available	2024-04-11T04:38:22Z
dc.date.issued	2023-10-01
dc.identifier.citation	Journal of Environmental Chemical Engineering, 2023, 11, (5)
dc.identifier.issn	2213-2929
dc.identifier.issn	2213-3437
dc.identifier.uri	http://hdl.handle.net/10453/177728
dc.description.abstract	This study proposes an integrated system that combines a photoelectrochemical (PEC) system and forward osmosis (FO) system in tandem operation to address water, energy, and food (WEF) scarcity. The system utilizes a combination of ammonium sulfite and ammonium sulfate solution to represent wet flue gas desulfurization products from the ammonia scrubbing process commonly used in oil and gas producing countries. Under simulated sunlight, the sulfurous solution in the PEC system is oxidized at a reduced titania nanotube array (TNA) working electrode to produce hydrogen, a clean energy source (Energy). The oxidized sulfurous solution entering the draw solution (DS) compartment of the FO unit was then diluted when the FO system operates against simulated brackish water as the feed solution (FS, Water). The DS effluent is recirculated to ensure continuous operation of both PEC and FO systems. At a certain point in time, the DS effluent is also used as a cultivation solution for basil plants, the growth is visually more favorable compared to those supplied with tap water (Food). A concentrated DS (0.8:0.2 ratio of (NH4)2SO3:(NH4)2SO4) showed excellent water desalination performance. It had a high water flux of 17 LMH with 11.8 % water recovery, highest salt rejection (98.6 % for Na+ and 98.3 for Cl−), and lowest reverse solute flux (RSF) (3.5 g‧m−2‧h−1 for SO42−, 5.25 g‧m−2‧h−1 for SO32−, 3.1 g‧m−2‧h−1 for NH4+) against 5 g‧L−1 NaCl FS for 5 h, with a cathodic current density of 0.15 A‧cm−2. Overall, this study demonstrates the successful implementation of a bench-scale integrated system that produces tangible outcomes for water, energy, and food.
dc.language	English
dc.publisher	ELSEVIER SCI LTD
dc.relation	Qatar National Research FundNPRP9-052-2-020
dc.relation.ispartof	Journal of Environmental Chemical Engineering
dc.relation.isbasedon	10.1016/j.jece.2023.110525
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
dc.subject	0306 Physical Chemistry (incl. Structural), 0904 Chemical Engineering, 0907 Environmental Engineering
dc.subject.classification	3406 Physical chemistry
dc.subject.classification	4004 Chemical engineering
dc.subject.classification	4011 Environmental engineering
dc.title	Integrated photoelectrochemical (PEC)-forward osmosis (FO) system for hydrogen production and fertigation application
dc.type	Journal Article
utslib.citation.volume	11
utslib.for	0306 Physical Chemistry (incl. Structural)
utslib.for	0904 Chemical Engineering
utslib.for	0907 Environmental 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	open_access	*
dc.date.updated	2024-04-11T04:38:12Z
pubs.issue	5
pubs.publication-status	Published
pubs.volume	11
utslib.citation.issue	5

Abstract:

This study proposes an integrated system that combines a photoelectrochemical (PEC) system and forward osmosis (FO) system in tandem operation to address water, energy, and food (WEF) scarcity. The system utilizes a combination of ammonium sulfite and ammonium sulfate solution to represent wet flue gas desulfurization products from the ammonia scrubbing process commonly used in oil and gas producing countries. Under simulated sunlight, the sulfurous solution in the PEC system is oxidized at a reduced titania nanotube array (TNA) working electrode to produce hydrogen, a clean energy source (Energy). The oxidized sulfurous solution entering the draw solution (DS) compartment of the FO unit was then diluted when the FO system operates against simulated brackish water as the feed solution (FS, Water). The DS effluent is recirculated to ensure continuous operation of both PEC and FO systems. At a certain point in time, the DS effluent is also used as a cultivation solution for basil plants, the growth is visually more favorable compared to those supplied with tap water (Food). A concentrated DS (0.8:0.2 ratio of (NH4)2SO3:(NH4)2SO4) showed excellent water desalination performance. It had a high water flux of 17 LMH with 11.8 % water recovery, highest salt rejection (98.6 % for Na+ and 98.3 for Cl−), and lowest reverse solute flux (RSF) (3.5 g‧m−2‧h−1 for SO42−, 5.25 g‧m−2‧h−1 for SO32−, 3.1 g‧m−2‧h−1 for NH4+) against 5 g‧L−1 NaCl FS for 5 h, with a cathodic current density of 0.15 A‧cm−2. Overall, this study demonstrates the successful implementation of a bench-scale integrated system that produces tangible outcomes for water, energy, and food.

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http://hdl.handle.net/10453/177728