Validation of a cationic polyacrylamide flocculant for the harvesting fresh and seawater microalgal biomass

Nguyen, LN; Labeeuw, L; Commault, AS; Emmerton, B; Ralph, PJ; Johir, MAH; Guo, W; Ngo, HH; Nghiem, LD

Validation of a cationic polyacrylamide flocculant for the harvesting fresh and seawater microalgal biomass

Nguyen, LN

Labeeuw, L

Commault, AS

Emmerton, B

Ralph, PJ

Johir, MAH

Guo, W

Ngo, HH

Nghiem, LD

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Publication Type:: Journal Article
Citation:: Environmental Technology and Innovation, 2019, 16
Issue Date:: 2019-11-01

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Field	Value	Language
dc.contributor.author	Nguyen, LN https://orcid.org/0000-0001-5360-886X	en_US
dc.contributor.author	Labeeuw, L https://orcid.org/0000-0002-5167-8386	en_US
dc.contributor.author	Commault, AS https://orcid.org/0000-0002-6730-0089	en_US
dc.contributor.author	Emmerton, B https://orcid.org/0000-0003-4106-4791	en_US
dc.contributor.author	Ralph, PJ https://orcid.org/0000-0002-3103-7346	en_US
dc.contributor.author	Johir, MAH https://orcid.org/0000-0001-6222-6943	en_US
dc.contributor.author	Guo, W https://orcid.org/0000-0001-5542-2858	en_US
dc.contributor.author	Ngo, HH https://orcid.org/0000-0002-0296-2866	en_US
dc.contributor.author	Nghiem, LD https://orcid.org/0000-0002-9039-5792	en_US
dc.date.issued	2019-11-01	en_US
dc.identifier.citation	Environmental Technology and Innovation, 2019, 16	en_US
dc.identifier.uri	http://hdl.handle.net/10453/136075
dc.description.abstract	© 2019 Elsevier B.V. A simple, efficient, and fast settling flocculation technique to harvest microalgal biomass was demonstrated using a proprietary cationic polyacrylamide flocculant for a freshwater (Chlorella vulgaris) and a marine (Phaeodactylum tricornutum) microalgal culture at their mid-stationary growth phase. The optimal flocculant doses were 18.9 and 13.7 mg/g of dry algal biomass for C. vulgaris and P. tricornutum, respectively (equivalent to 7 g per m3 of algal culture for both species). The obtained optimal dose was well corroborated with changes in cell surface charge, and culture solution optical density and turbidity. At the optimal dose, charge neutralization of 64 and 86% was observed for C. vulgaris and P. tricornutum algal cells, respectively. Algae recovery was independent of the culture solution pH in the range of pH 6 to 9. Algal biomass recovery was achieved of 100 and 90% for C vulgaris and P. tricornutum respectively, and over 98% medium recovery was achievable by simple decanting.	en_US
dc.relation.ispartof	Environmental Technology and Innovation	en_US
dc.relation.isbasedon	10.1016/j.eti.2019.100466	en_US
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.title	Validation of a cationic polyacrylamide flocculant for the harvesting fresh and seawater microalgal biomass	en_US
dc.type	Journal Article
utslib.citation.volume	16	en_US
utslib.for	0607 Plant Biology	en_US
utslib.for	0502 Environmental Science and Management	en_US
utslib.for	0907 Environmental Engineering	en_US
utslib.for	1002 Environmental Biotechnology	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
utslib.copyright.status	open_access
utslib.copyright.embargo	2021-11-01T00:00:00+1100
pubs.publication-status	Published	en_US
pubs.volume	16	en_US

Abstract:

© 2019 Elsevier B.V. A simple, efficient, and fast settling flocculation technique to harvest microalgal biomass was demonstrated using a proprietary cationic polyacrylamide flocculant for a freshwater (Chlorella vulgaris) and a marine (Phaeodactylum tricornutum) microalgal culture at their mid-stationary growth phase. The optimal flocculant doses were 18.9 and 13.7 mg/g of dry algal biomass for C. vulgaris and P. tricornutum, respectively (equivalent to 7 g per m3 of algal culture for both species). The obtained optimal dose was well corroborated with changes in cell surface charge, and culture solution optical density and turbidity. At the optimal dose, charge neutralization of 64 and 86% was observed for C. vulgaris and P. tricornutum algal cells, respectively. Algae recovery was independent of the culture solution pH in the range of pH 6 to 9. Algal biomass recovery was achieved of 100 and 90% for C vulgaris and P. tricornutum respectively, and over 98% medium recovery was achievable by simple decanting.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/135814