A sequential membrane bioreactor followed by a membrane microalgal reactor for nutrient removal and algal biomass production

Nguyen, LN; Truong, MV; Nguyen, AQ; Johir, MAH; Commault, AS; Ralph, PJ; Semblante, GU; Nghiem, LD

A sequential membrane bioreactor followed by a membrane microalgal reactor for nutrient removal and algal biomass production

Nguyen, LN

Truong, MV Nguyen, AQ Johir, MAH Commault, AS

Ralph, PJ

Semblante, GU Nghiem, LD

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Publication Type:: Journal Article
Citation:: Environmental Science: Water Research and Technology, 2020, 6 (1), pp. 189 - 196
Issue Date:: 2020-01-01

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Field	Value	Language
dc.contributor.author	Nguyen, LN https://orcid.org/0000-0001-5360-886X	en_US
dc.contributor.author	Truong, MV	en_US
dc.contributor.author	Nguyen, AQ	en_US
dc.contributor.author	Johir, MAH	en_US
dc.contributor.author	Commault, AS https://orcid.org/0000-0002-6730-0089	en_US
dc.contributor.author	Ralph, PJ https://orcid.org/0000-0002-3103-7346	en_US
dc.contributor.author	Semblante, GU	en_US
dc.contributor.author	Nghiem, LD https://orcid.org/0000-0002-9039-5792	en_US
dc.date.available	2021-01-01T18:01:56Z
dc.date.issued	2020-01-01	en_US
dc.identifier.citation	Environmental Science: Water Research and Technology, 2020, 6 (1), pp. 189 - 196	en_US
dc.identifier.issn	2053-1400	en_US
dc.identifier.uri	http://hdl.handle.net/10453/137034
dc.description.abstract	© 2019 The Royal Society of Chemistry. A hybrid process combining a single compartment aerobic membrane bioreactor (MBR) and a membrane microalgal reactor (MMR) was evaluated for nutrient removal and microalgal biomass production. When operated without biomass extraction, the microalgal biomass in the MMR reached 920 mg L-1 on day 18 and then collapsed, rendering nutrient removal ineffective. Stable operation of the MMR was achieved by regular biomass extraction (i.e. 1/30 of the microalgal biomass in the reactor daily). The biomass production at steady state was approximately 26 g m-3 d-1. The NO3- and PO43- uptake values by microalgae were 4.0 ± 1.1 and 1.5 ± 0.9 g m-3 d-1, respectively. A facile flocculation and separation technique capable of recovering 98% microalgal biomass was demonstrated. Although the hybrid process can significantly enhance nutrient removal and biomass production, further research is needed to intensify the microalgal growth rate. At the current microalgal growth rate, a large MMR volume (37 times that of the MBR) is necessary for synchronous operation.	en_US
dc.relation.ispartof	Environmental Science: Water Research and Technology	en_US
dc.relation.isbasedon	10.1039/c9ew00851a	en_US
dc.rights	info:eu-repo/semantics/openAccess
dc.title	A sequential membrane bioreactor followed by a membrane microalgal reactor for nutrient removal and algal biomass production	en_US
dc.type	Journal Article
utslib.citation.volume	1	en_US
utslib.citation.volume	6	en_US
utslib.for	0399 Other Chemical Sciences	en_US
utslib.for	0905 Civil Engineering	en_US
utslib.for	0907 Environmental 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/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - C3 - Climate Change Cluster
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
pubs.organisational-group	/University of Technology Sydney/Students
utslib.copyright.status	open_access	*
pubs.issue	1	en_US
pubs.publication-status	Published	en_US
pubs.volume	6	en_US

Abstract:

© 2019 The Royal Society of Chemistry. A hybrid process combining a single compartment aerobic membrane bioreactor (MBR) and a membrane microalgal reactor (MMR) was evaluated for nutrient removal and microalgal biomass production. When operated without biomass extraction, the microalgal biomass in the MMR reached 920 mg L-1 on day 18 and then collapsed, rendering nutrient removal ineffective. Stable operation of the MMR was achieved by regular biomass extraction (i.e. 1/30 of the microalgal biomass in the reactor daily). The biomass production at steady state was approximately 26 g m-3 d-1. The NO3- and PO43- uptake values by microalgae were 4.0 ± 1.1 and 1.5 ± 0.9 g m-3 d-1, respectively. A facile flocculation and separation technique capable of recovering 98% microalgal biomass was demonstrated. Although the hybrid process can significantly enhance nutrient removal and biomass production, further research is needed to intensify the microalgal growth rate. At the current microalgal growth rate, a large MMR volume (37 times that of the MBR) is necessary for synchronous operation.

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http://hdl.handle.net/10453/137034