Fractional-submerged membrane distillation crystallizer (F-SMDC) for treatment of high salinity solution

Choi, Y; Naidu, G; Jeong, S; Lee, S; Vigneswaran, S

Fractional-submerged membrane distillation crystallizer (F-SMDC) for treatment of high salinity solution

Choi, Y

Naidu, G

Jeong, S Lee, S Vigneswaran, S

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Publication Type:: Journal Article
Citation:: Desalination, 2018, 440 pp. 59 - 67
Issue Date:: 2018-08-15

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Field	Value	Language
dc.contributor.author	Choi, Y https://orcid.org/0000-0001-6267-1457	en_US
dc.contributor.author	Naidu, G https://orcid.org/0000-0002-6406-3444	en_US
dc.contributor.author	Jeong, S	en_US
dc.contributor.author	Lee, S	en_US
dc.contributor.author	Vigneswaran, S https://orcid.org/0000-0002-8117-4322	en_US
dc.date.available	2020-08-15T19:09:51Z
dc.date.issued	2018-08-15	en_US
dc.identifier.citation	Desalination, 2018, 440 pp. 59 - 67	en_US
dc.identifier.issn	0011-9164	en_US
dc.identifier.uri	http://hdl.handle.net/10453/131918
dc.description.abstract	© 2018 Elsevier B.V. Membrane distillation with crystallization (MDC) is an attractive process for high saline seawater reverse osmosis (SWRO) brine treatment. MDC produces additional fresh water while simultaneously recovering valuable resources. This study developed a novel approach of fractional-submerged MDC (F-SMDC) process, in which MD and crystallizer are integrated in a feed tank with a submerged membrane. F-SMDC principle is based on the presence of temperature/concentration gradient (TG/CG) in the feed reactor. The operational conditions at the top portion of the feed reactor (higher temperature and lower feed concentration) was well suited for MD operation, while the bottom portion of the reactor (lower temperature and higher concentration) was favourable for crystal growth. F-SMDC performance with direct contact MD to treat brine and produce sodium sulfate (Na2SO4) crystals using TG/CG showed positive results. The TG/CG approach in F-SMDC enabled to achieve higher water recovery for brine treatment with a volume concentration factor (VCF) of over 3.5 compared to VCF of 2.9 with a conventional S-MDC set-up. Further, the high feed concentration and low temperature at the reactor bottom in F-SMDC enabled the formation of Na2SO4 crystals with narrow crystal size distribution.	en_US
dc.relation	http://purl.org/au-research/grants/arc/DP150101377
dc.relation.ispartof	Desalination	en_US
dc.relation.isbasedon	10.1016/j.desal.2018.01.027	en_US
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.classification	Chemical Engineering	en_US
dc.title	Fractional-submerged membrane distillation crystallizer (F-SMDC) for treatment of high salinity solution	en_US
dc.type	Journal Article
utslib.citation.volume	440	en_US
utslib.for	0907 Environmental Engineering	en_US
utslib.for	0301 Analytical Chemistry	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	09 Engineering	en_US
pubs.embargo.period	Not known	en_US
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.publication-status	Published	en_US
pubs.volume	440	en_US

Abstract:

© 2018 Elsevier B.V. Membrane distillation with crystallization (MDC) is an attractive process for high saline seawater reverse osmosis (SWRO) brine treatment. MDC produces additional fresh water while simultaneously recovering valuable resources. This study developed a novel approach of fractional-submerged MDC (F-SMDC) process, in which MD and crystallizer are integrated in a feed tank with a submerged membrane. F-SMDC principle is based on the presence of temperature/concentration gradient (TG/CG) in the feed reactor. The operational conditions at the top portion of the feed reactor (higher temperature and lower feed concentration) was well suited for MD operation, while the bottom portion of the reactor (lower temperature and higher concentration) was favourable for crystal growth. F-SMDC performance with direct contact MD to treat brine and produce sodium sulfate (Na2SO4) crystals using TG/CG showed positive results. The TG/CG approach in F-SMDC enabled to achieve higher water recovery for brine treatment with a volume concentration factor (VCF) of over 3.5 compared to VCF of 2.9 with a conventional S-MDC set-up. Further, the high feed concentration and low temperature at the reactor bottom in F-SMDC enabled the formation of Na2SO4 crystals with narrow crystal size distribution.

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http://hdl.handle.net/10453/131918