Evaluating ionic organic draw solutes in osmotic membrane bioreactors for water reuse

Luo, W; Hai, FI; Price, WE; Elimelech, M; Nghiem, LD

Evaluating ionic organic draw solutes in osmotic membrane bioreactors for water reuse

Luo, W Hai, FI Price, WE Elimelech, M Nghiem, LD

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Publisher:: ELSEVIER SCIENCE BV
Publication Type:: Journal Article
Citation:: Journal of Membrane Science, 2016, 514, pp. 636-645
Issue Date:: 2016-09-15

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Field	Value	Language
dc.contributor.author	Luo, W
dc.contributor.author	Hai, FI
dc.contributor.author	Price, WE
dc.contributor.author	Elimelech, M
dc.contributor.author	Nghiem, LD
dc.date.accessioned	2022-02-09T21:44:36Z
dc.date.available	2022-02-09T21:44:36Z
dc.date.issued	2016-09-15
dc.identifier.citation	Journal of Membrane Science, 2016, 514, pp. 636-645
dc.identifier.issn	0376-7388
dc.identifier.issn	1873-3123
dc.identifier.uri	http://hdl.handle.net/10453/154360
dc.description.abstract	The performance of two ionic organic draw solutes, namely sodium acetate (NaOAc) and ethylene-diamine-tetra acetic acid disodium salt (EDTA-2Na), during osmotic membrane bioreactor (OMBR) operation was investigated in this study. Their performance was compared to that of sodium chloride (NaCl). A reverse osmosis (RO) process was integrated with OMBR to form an OMBR-RO hybrid system for draw solute recovery and clean water production. Results show that the NaOAc and EDTA-2Na draw solutes significantly reduced salinity build-up in the bioreactor in comparison with NaCl during OMBR operation. At the same osmotic pressure, these two ionic organic draw solutions produced slightly lower water flux, but considerably less reverse salt flux than NaCl. Compared to NaCl and NaOAc, EDTA-2Na resulted in significantly less fouling to the forward osmosis membrane. Regardless of the draw solutes, the OMBR-RO hybrid system could remove all 31 trace organic contaminants investigated in this study by more than 97%. Results reported here suggest that ionic organic draw solutes can be used to mitigate salinity build-up in the bioreactor during OMBR operation.
dc.language	English
dc.publisher	ELSEVIER SCIENCE BV
dc.relation.ispartof	Journal of Membrane Science
dc.relation.isbasedon	10.1016/j.memsci.2016.05.023
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	03 Chemical Sciences, 09 Engineering
dc.subject.classification	Chemical Engineering
dc.title	Evaluating ionic organic draw solutes in osmotic membrane bioreactors for water reuse
dc.type	Journal Article
utslib.citation.volume	514
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	2022-02-09T21:44:35Z
pubs.publication-status	Published
pubs.volume	514

Abstract:

The performance of two ionic organic draw solutes, namely sodium acetate (NaOAc) and ethylene-diamine-tetra acetic acid disodium salt (EDTA-2Na), during osmotic membrane bioreactor (OMBR) operation was investigated in this study. Their performance was compared to that of sodium chloride (NaCl). A reverse osmosis (RO) process was integrated with OMBR to form an OMBR-RO hybrid system for draw solute recovery and clean water production. Results show that the NaOAc and EDTA-2Na draw solutes significantly reduced salinity build-up in the bioreactor in comparison with NaCl during OMBR operation. At the same osmotic pressure, these two ionic organic draw solutions produced slightly lower water flux, but considerably less reverse salt flux than NaCl. Compared to NaCl and NaOAc, EDTA-2Na resulted in significantly less fouling to the forward osmosis membrane. Regardless of the draw solutes, the OMBR-RO hybrid system could remove all 31 trace organic contaminants investigated in this study by more than 97%. Results reported here suggest that ionic organic draw solutes can be used to mitigate salinity build-up in the bioreactor during OMBR operation.

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http://hdl.handle.net/10453/154360