Evaluating energy consumption of air gap membrane distillation for seawater desalination at pilot scale level

Duong, HC; Cooper, P; Nelemans, B; Cath, TY; Nghiem, LD

Evaluating energy consumption of air gap membrane distillation for seawater desalination at pilot scale level

Duong, HC Cooper, P Nelemans, B Cath, TY Nghiem, LD

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Publisher:: ELSEVIER SCIENCE BV
Publication Type:: Journal Article
Citation:: Separation and Purification Technology, 2016, 166, pp. 55-62
Issue Date:: 2016-06-22

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Field	Value	Language
dc.contributor.author	Duong, HC
dc.contributor.author	Cooper, P
dc.contributor.author	Nelemans, B
dc.contributor.author	Cath, TY
dc.contributor.author	Nghiem, LD
dc.date.accessioned	2022-02-10T07:03:05Z
dc.date.available	2022-02-10T07:03:05Z
dc.date.issued	2016-06-22
dc.identifier.citation	Separation and Purification Technology, 2016, 166, pp. 55-62
dc.identifier.issn	1383-5866
dc.identifier.issn	1873-3794
dc.identifier.uri	http://hdl.handle.net/10453/154383
dc.description.abstract	This study aimed to optimise an air gap membrane distillation (AGMD) system for seawater desalination with respect to distillate production as well as thermal and electrical energy consumption. Pilot evaluation data shows a notable influence of evaporator inlet temperature and water circulation rate on process performance. An increase in both distillate production rate and energy efficiency could be obtained by increasing the evaporator inlet temperature. On the other hand, there was a trade-off between the distillate production rate and energy efficiency when the water circulation rate varied. Increasing the water circulation rate resulted in an improvement in the distillate production rate, but also an increase in both specific thermal and electrical energy consumption. Given the small driving force used in the pilot AGMD, discernible impact of feed salinity on process performance could be observed, while the effects of temperature and concentration polarisation were small. At the optimum operating conditions identified in this study, a stable AGMD operation for seawater desalination could be achieved with specific thermal and electrical energy consumption of 90 and 0.13 kW h/m3, respectively. These values demonstrate the commercial viability of AGMD for small-scale and off-grid seawater desalination where solar thermal or low-grade heat sources are readily available.
dc.language	English
dc.publisher	ELSEVIER SCIENCE BV
dc.relation.ispartof	Separation and Purification Technology
dc.relation.isbasedon	10.1016/j.seppur.2016.04.014
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0301 Analytical Chemistry, 0904 Chemical Engineering
dc.subject.classification	Chemical Engineering
dc.title	Evaluating energy consumption of air gap membrane distillation for seawater desalination at pilot scale level
dc.type	Journal Article
utslib.citation.volume	166
utslib.for	0301 Analytical Chemistry
utslib.for	0904 Chemical 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	2022-02-10T07:03:04Z
pubs.publication-status	Published
pubs.volume	166

Abstract:

This study aimed to optimise an air gap membrane distillation (AGMD) system for seawater desalination with respect to distillate production as well as thermal and electrical energy consumption. Pilot evaluation data shows a notable influence of evaporator inlet temperature and water circulation rate on process performance. An increase in both distillate production rate and energy efficiency could be obtained by increasing the evaporator inlet temperature. On the other hand, there was a trade-off between the distillate production rate and energy efficiency when the water circulation rate varied. Increasing the water circulation rate resulted in an improvement in the distillate production rate, but also an increase in both specific thermal and electrical energy consumption. Given the small driving force used in the pilot AGMD, discernible impact of feed salinity on process performance could be observed, while the effects of temperature and concentration polarisation were small. At the optimum operating conditions identified in this study, a stable AGMD operation for seawater desalination could be achieved with specific thermal and electrical energy consumption of 90 and 0.13 kW h/m3, respectively. These values demonstrate the commercial viability of AGMD for small-scale and off-grid seawater desalination where solar thermal or low-grade heat sources are readily available.

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http://hdl.handle.net/10453/154383