Gas Transfer Controls Carbon Limitation during Biomass Production by Marine Microalgae

Tamburic, B; Evenhuis, CR; Suggett, DJ; Larkum, AWD; Raven, JA; Ralph, PJ

Gas Transfer Controls Carbon Limitation during Biomass Production by Marine Microalgae

Tamburic, B

Evenhuis, CR

Suggett, DJ

Larkum, AWD

Raven, JA

Ralph, PJ

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Publication Type:: Journal Article
Citation:: ChemSusChem, 2015, 8 (16), pp. 2727 - 2736
Issue Date:: 2015-01-01

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Field	Value	Language
dc.contributor.author	Tamburic, B https://orcid.org/0000-0001-5720-9380	en_US
dc.contributor.author	Evenhuis, CR https://orcid.org/0000-0001-9903-7716	en_US
dc.contributor.author	Suggett, DJ https://orcid.org/0000-0001-5326-2520	en_US
dc.contributor.author	Larkum, AWD https://orcid.org/0000-0002-0420-134X	en_US
dc.contributor.author	Raven, JA https://orcid.org/0000-0002-2789-3297	en_US
dc.contributor.author	Ralph, PJ https://orcid.org/0000-0002-3103-7346	en_US
dc.date.issued	2015-01-01	en_US
dc.identifier.citation	ChemSusChem, 2015, 8 (16), pp. 2727 - 2736	en_US
dc.identifier.issn	1864-5631	en_US
dc.identifier.uri	http://hdl.handle.net/10453/36833
dc.description.abstract	© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This study presents the first in-depth analysis of CO<inf>2</inf> limitation on the biomass productivity of the biofuel candidate marine microalga Nannochloropsis oculata. Net photosynthesis decreased by 60 from 125 to 50 μmolO2L<sup>-1</sup>h<sup>-1</sup> over a 12 h light cycle as a direct result of carbon limitation. Continuous dissolved O<inf>2</inf> and pH measurements were used to develop a detailed diurnal mechanism for the interaction between photosynthesis, gas exchange and carbonate chemistry in the photo-bioreactor. Gas exchange determined the degree of carbon limitation experienced by the algae. Carbon limitation was confirmed by delivering more CO<inf>2</inf>, which increased net photosynthesis back to its steady-state maximum. This study highlights the importance of maintaining replete carbon concentrations in photo-bioreactors and other culturing facilities, either by constant pH operation or preferably by designing a feedback loop based on the dissolved O<inf>2</inf> concentration. Just grow it: We present the first in-depth analysis of CO<inf>2</inf> limitation on biomass productivity of the marine microalga Nannochloropsis oculata. Net photosynthesis decreases by 60 over a 12 h light cycle as a direct result of carbon limitation. Continuous dissolved O<inf>2</inf> and pH measurements are used to develop a detailed diurnal mechanism for the interaction between photosynthesis, gas exchange and carbonate chemistry in the photo-bioreactor.	en_US
dc.relation	http://purl.org/au-research/grants/arc/FT130100202
dc.relation.ispartof	ChemSusChem	en_US
dc.relation.isbasedon	10.1002/cssc.201500332	en_US
dc.subject.classification	Organic Chemistry	en_US
dc.subject.classification	General Chemistry	en_US
dc.subject.mesh	Carbon Dioxide	en_US
dc.subject.mesh	Carbon	en_US
dc.subject.mesh	Oxygen	en_US
dc.subject.mesh	Bioreactors	en_US
dc.subject.mesh	Biomass	en_US
dc.subject.mesh	Photosynthesis	en_US
dc.subject.mesh	Hydrogen-Ion Concentration	en_US
dc.subject.mesh	Stramenopiles	en_US
dc.subject.mesh	Microalgae	en_US
dc.title	Gas Transfer Controls Carbon Limitation during Biomass Production by Marine Microalgae	en_US
dc.type	Journal Article
utslib.citation.volume	16	en_US
utslib.citation.volume	8	en_US
utslib.for	0399 Other Chemical Sciences	en_US
utslib.for	0301 Analytical Chemistry	en_US
utslib.for	0904 Chemical 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 Science
pubs.organisational-group	/University of Technology Sydney/Strength - C3 - Climate Change Cluster
pubs.organisational-group	/University of Technology Sydney/Strength - ithree - Institute of Infection, Immunity and Innovation
utslib.copyright.status	closed_access
pubs.issue	16	en_US
pubs.publication-status	Published	en_US
pubs.volume	8	en_US

Abstract:

© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This study presents the first in-depth analysis of CO2 limitation on the biomass productivity of the biofuel candidate marine microalga Nannochloropsis oculata. Net photosynthesis decreased by 60 from 125 to 50 μmolO2L^-1h^-1 over a 12 h light cycle as a direct result of carbon limitation. Continuous dissolved O2 and pH measurements were used to develop a detailed diurnal mechanism for the interaction between photosynthesis, gas exchange and carbonate chemistry in the photo-bioreactor. Gas exchange determined the degree of carbon limitation experienced by the algae. Carbon limitation was confirmed by delivering more CO2, which increased net photosynthesis back to its steady-state maximum. This study highlights the importance of maintaining replete carbon concentrations in photo-bioreactors and other culturing facilities, either by constant pH operation or preferably by designing a feedback loop based on the dissolved O2 concentration. Just grow it: We present the first in-depth analysis of CO2 limitation on biomass productivity of the marine microalga Nannochloropsis oculata. Net photosynthesis decreases by 60 over a 12 h light cycle as a direct result of carbon limitation. Continuous dissolved O2 and pH measurements are used to develop a detailed diurnal mechanism for the interaction between photosynthesis, gas exchange and carbonate chemistry in the photo-bioreactor.

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http://hdl.handle.net/10453/36833