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Microplastics reduce microalgal biomass by decreasing single-cell weight: the barrier towards implementation at scale

2023Journal article Open access
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dc.contributor.authorMendonça, Ivana
dc.contributor.authorCunha, César
dc.contributor.authorKaufmann, Manfred
dc.contributor.authorFaria, Marisa
dc.contributor.authorCordeiro, Nereida
dc.date.accessioned2023-04-21T09:16:44Z
dc.date.available2023-04-21T09:16:44Z
dc.date.issued2023
dc.description.abstractMicroplastics (MPs) are a widespread environmental threat, especially to aquatic and urban systems. Water quality is vital for biomass production in microalgal-based industries. Here, industrially relevant microalgae Tetraselmis suecica, Scenedesmus armatus, and Nannochloropsis gaditana were exposed to PS- and PE-MPs (polystyrene and polyethylene, re spectively – 10-20 μm) contaminated waters (5 and 10 mg/L). Following industrial empirical and ecotoxicological pro cedures, the production period was established as four days (exponential growth phase). 27-long day experiments were conducted to determine the chronic effects of MPs contamination in microalgal biomass yields. MPs induced different responses in cell density: T. suecica decreased (up to 11 %); S. armatus showed no changes; and N. gaditana increased (up to 6 %). However, all three microalgae exhibited significant decreases in biomass production (up to 24, 48, and 52 %, respectively). S. armatus exposed to PS-MPs and N. gaditana exposed to PE-MPs were the most im pacted regarding biomass production. The decrease in biomass yield was due to the reduction in single-cell weight (up to 14, 47, and 43 %), and/or the production of smaller-sized cells (T. suecica). In response to chronic exposure, microalgae showed signs of cell density adaptation. Despite cell density normalizing, biomass production was still re duced compared to biomass production in clean water. Computational modelling highlighted that MPs exposure had a concentration-dependent negative impact on microalgae biomass. The models allow the evaluation of the systematic risks that MPs impose in microalgal-based industries and stimulate actions towards implementing systems to contain/ eliminate MPs contamination in the waters used in microalgae production.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.scitotenv.2023.162950pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/5130
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationInterdisciplinary Centre of Marine and Environmental Research
dc.relationInterdisciplinary Centre of Marine and Environmental Research
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectMicroalgaept_PT
dc.subjectBiomasspt_PT
dc.subjectMicroplasticspt_PT
dc.subjectPolystyrenept_PT
dc.subjectPolyethylenept_PT
dc.subjectPollutionpt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências da Vidapt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titleMicroplastics reduce microalgal biomass by decreasing single-cell weight: the barrier towards implementation at scalept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleInterdisciplinary Centre of Marine and Environmental Research
oaire.awardTitleInterdisciplinary Centre of Marine and Environmental Research
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04423%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04423%2F2020/PT
oaire.citation.startPage162950pt_PT
oaire.citation.titleScience of The Total Environmentpt_PT
oaire.citation.volume877pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameda Silva Mendonça
person.familyNameCunha
person.familyNameKaufmann
person.familyNameFaria
person.familyNamecordeiro
person.givenNameIvana Rita
person.givenNameCésar
person.givenNameManfred
person.givenNameMarisa Camacho Gonçalves
person.givenNamenereida
person.identifier3435316
person.identifier1612636
person.identifier.ciencia-id7619-C648-AE6C
person.identifier.ciencia-idEC12-B90B-BA98
person.identifier.ciencia-idA316-A34A-F7AF
person.identifier.ciencia-idD716-6F48-AD0E
person.identifier.ciencia-id521A-0F62-EA39
person.identifier.orcid0000-0002-9148-026X
person.identifier.orcid0000-0003-3811-2932
person.identifier.orcid0000-0001-6213-3229
person.identifier.orcid0000-0002-9158-6961
person.identifier.orcid0000-0001-6006-3415
person.identifier.ridA-7561-2013
person.identifier.ridO-2253-2019
person.identifier.scopus-author-id35264346100
person.identifier.scopus-author-id7004319456
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
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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