Low energy resonance vibration submerged membrane system for microalgae harvesting: Performance and feasibility

Min, C; Kim, JE; Shon, HK; Kim, SH

Low energy resonance vibration submerged membrane system for microalgae harvesting: Performance and feasibility

Min, C Kim, JE Shon, HK Kim, SH

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Desalination, 2022, 539, pp. 115895
Issue Date:: 2022-10-01

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Field	Value	Language
dc.contributor.author	Min, C
dc.contributor.author	Kim, JE
dc.contributor.author	Shon, HK
dc.contributor.author	Kim, SH
dc.date.accessioned	2022-08-19T01:09:55Z
dc.date.available	2022-08-19T01:09:55Z
dc.date.issued	2022-10-01
dc.identifier.citation	Desalination, 2022, 539, pp. 115895
dc.identifier.issn	0011-9164
dc.identifier.uri	http://hdl.handle.net/10453/160478
dc.description.abstract	This study investigated an energy-efficient harvesting method to collect microalgae of Chlorella Vulgaris (C. vulgaris). The method proposed in the current study was a combination of a resonance vibration submerged membrane (RVSM) system and centrifugation. The result showed that the RVSM system was able to concentrate the C. vulgaris solution by 17 times (0.61 g·L−1 to 10.4 g·L−1) without chemical cleaning during filtration with intermittent relaxation (i.e., filtration for 9 min and relaxation for 1 min) at a flux of 40 LMH (L·m−2·h−1) until the transmembrane pressure (TMP) reached 70 kPa. In addition, extracellular polymeric substances such as polysaccharides and protein were found mainly responsible for membrane fouling during the operation of concentrating C. vulgaris solution. Integrating the RVSM system with the centrifugation process required the total specific energy consumption of 0.56 kWh·m−3 (0.09 kWh·m−3 for the RVSM and 0.47 kWh·m−3 for the centrifugation). This study demonstrated the combination of the RVSM system and centrifugation to be a feasible C. vulgaris harvesting method by showing lower energy consumption than other conventional processes.
dc.language	en
dc.publisher	Elsevier BV
dc.relation	http://purl.org/au-research/grants/arc/IH210100001
dc.relation	Industry-Academic Cooperation Foundation
dc.relation.ispartof	Desalination
dc.relation.isbasedon	10.1016/j.desal.2022.115895
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	03 Chemical Sciences, 09 Engineering
dc.subject.classification	Chemical Engineering
dc.title	Low energy resonance vibration submerged membrane system for microalgae harvesting: Performance and feasibility
dc.title.alternative	Energy reduction of C. vulgaris harvesting using resonance vibration submerged membrane system
dc.type	Journal Article
utslib.citation.volume	539
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	embargoed	*
utslib.copyright.embargo	2024-10-01T00:00:00+1000Z
dc.date.updated	2022-08-19T01:09:54Z
pubs.publication-status	Accepted
pubs.volume	539

Abstract:

This study investigated an energy-efficient harvesting method to collect microalgae of Chlorella Vulgaris (C. vulgaris). The method proposed in the current study was a combination of a resonance vibration submerged membrane (RVSM) system and centrifugation. The result showed that the RVSM system was able to concentrate the C. vulgaris solution by 17 times (0.61 g·L−1 to 10.4 g·L−1) without chemical cleaning during filtration with intermittent relaxation (i.e., filtration for 9 min and relaxation for 1 min) at a flux of 40 LMH (L·m−2·h−1) until the transmembrane pressure (TMP) reached 70 kPa. In addition, extracellular polymeric substances such as polysaccharides and protein were found mainly responsible for membrane fouling during the operation of concentrating C. vulgaris solution. Integrating the RVSM system with the centrifugation process required the total specific energy consumption of 0.56 kWh·m−3 (0.09 kWh·m−3 for the RVSM and 0.47 kWh·m−3 for the centrifugation). This study demonstrated the combination of the RVSM system and centrifugation to be a feasible C. vulgaris harvesting method by showing lower energy consumption than other conventional processes.

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http://hdl.handle.net/10453/160478