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Effects of LED lighting on Nannochloropsis oceanica grown in outdoor raceway ponds

2022Journal article Open access
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dc.contributor.authorCarneiro, M.
dc.contributor.authorMaia, Inês Beatriz
dc.contributor.authorCunha, P.
dc.contributor.authorGuerra, I.
dc.contributor.authorMagina, T.
dc.contributor.authorSantos, Tamara
dc.contributor.authorSchulze, Peter S.C.
dc.contributor.authorPereira, H.
dc.contributor.authorMalcata, F. X.
dc.contributor.authorNavalho, J.
dc.contributor.authorSilva, J.
dc.contributor.authorOtero, A.
dc.contributor.authorVarela, João
dc.date.accessioned2022-10-24T13:23:54Z
dc.date.available2022-10-24T13:23:54Z
dc.date.issued2022
dc.description.abstractGrowth in most microalgal mass cultivation systems is light-limited, particularly in raceway ponds (RWP) where the light path is higher. Artificial lighting can be a promising solution to diminishing dark zones and enhance microalgal productivity. Therefore, our goal was to prevent the cell shift from photosynthesis to a respiration-only stage by resorting to LED illumination. Nannochloropsis oceanica cultures were accordingly grown out-doors in a preliminary small-scaleexperiment, followed by pilot-scale trials. In the former, three 3.0-m(2) RWP were set up under three distinct conditions: 1) without LEDs (control); 2) LEDs turned on during the night; and 3) LEDs turned on for 24 h. In the pilot-scale trial, one of two 28.9-m(2) pilot-scale RWPs was coupled to the best LED setup - determined in the small-scale preliminary experiment - using the same light intensity (normal mode) and half of the intensity (economy mode), with the second RWP serving as a control. In the preliminary experiment, the use of LEDs for 24 h was deemed as not helpful during daytime, before the culture reached asymptotic to 0.5 g DW L-1 - when dark zones appeared during the day due to sunlight attenuation in the 0.1 m-deep cultures. Overall, use of LEDs increased biomass growth chiefly by increasing nighttime productivities - materialized in higher chlorophyll, protein, and carbohydrate productivities in LED-lit cultures. A higher impact of LED lighting was observed under lower sunlight irradiances. A preliminary economic analysis indicates that use of LEDs in RWPs outdoors should be considered for high-value metabolites only.pt_PT
dc.description.sponsorshipEMBRC.PT ALG-01-0145-FEDER-022121; LISBOA-01-0247-FEDER-035234; POCI01-0247-FEDER-035234; ALG-010247-FEDER-035234
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.algal.2022.102685pt_PT
dc.identifier.issn2211-9264
dc.identifier.urihttp://hdl.handle.net/10400.1/18419
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationImprovement of lipid production processes by microalgae in a novel photobioreactor
dc.relationAlgarve Centre for Marine Sciences
dc.relationLaboratory for Process Engineering, Environment, Biotechnology and Energy
dc.relationDINOSSAUR: DINOflagellates for Sustained Supply of Active compoUnds in optimized photobioReactors
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectArtificial lightpt_PT
dc.subjectNannochloropsispt_PT
dc.subjectProductivitypt_PT
dc.subjectRaceway pondpt_PT
dc.subjectCircadian cyclept_PT
dc.titleEffects of LED lighting on Nannochloropsis oceanica grown in outdoor raceway pondspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleImprovement of lipid production processes by microalgae in a novel photobioreactor
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleLaboratory for Process Engineering, Environment, Biotechnology and Energy
oaire.awardTitleDINOSSAUR: DINOflagellates for Sustained Supply of Active compoUnds in optimized photobioReactors
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POR_NORTE/SFRH%2FBD%2F129952%2F2017/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00511%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FBBB-EBB%2F1374%2F2014/PT
oaire.citation.startPage102685pt_PT
oaire.citation.titleAlgal Researchpt_PT
oaire.citation.volume64pt_PT
oaire.fundingStreamPOR_NORTE
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream9471 - RIDTI
person.familyNameMaia
person.familyNameSantos
person.familyNameSchulze
person.familyNameVarela
person.givenNameInês Beatriz
person.givenNameTamara
person.givenNamePeter S.C.
person.givenNameJoão
person.identifier.ciencia-idE017-3A05-FF0A
person.identifier.ciencia-idF41E-3B55-577C
person.identifier.orcid0000-0002-7509-2216
person.identifier.orcid0000-0001-9008-4436
person.identifier.orcid0000-0003-3777-8732
person.identifier.orcid0000-0003-3101-693X
person.identifier.ridM-4223-2013
person.identifier.scopus-author-id56244247100
person.identifier.scopus-author-id55741416000
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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