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Marine vs freshwater microalgae exopolymers as biosolutions to microplastics pollution

2019Journal article Open access
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dc.contributor.authorCunha, César
dc.contributor.authorFaria, Marisa
dc.contributor.authorNogueira, Natacha
dc.contributor.authorFerreira, Artur
dc.contributor.authorCordeiro, Nereida Maria Abano
dc.date.accessioned2021-04-19T14:39:52Z
dc.date.available2021-04-19T14:39:52Z
dc.date.issued2019
dc.description.abstractMicroalgae can excrete exopolymer substances (EPS) with a potential to form hetero-aggregates with microplastic particles. In this work, two freshwater (Microcystis panniformis and Scenedesmus sp.) and two marine (Tetraselmis sp. and Gloeocapsa sp.) EPS producing microalgae were exposed to different microplastics. In this study, the influence of the microplastic particles type, size and density in the production of EPS and hetero-aggregates potential was studied. Most microalgae contaminated with microplastics displayed a cell abundance decrease (of up to 42%) in the cultures. The results showed that the formed aggregates were composed of microalgae and EPS (homo-aggregates) or a combination of microalgae, EPS and microplastics (hetero-aggregates). The hetero-aggregation was dependent on the size and yield production of EPS, which was species specific. Microcystis panniformis and Scenedesmus sp. exhibited small EPS, with a higher propension to disaggregate, and consequently lower capabilities to aggregate microplastics. Tetraselmis sp. displayed a higher ability to aggregate both low and high-density microplastics, being partially limited by the size of the microplastics. Gloeocapsa sp. had an outstanding EPS production and presented excellent microplastic aggregation capabilities (adhered onto the surface and also incorporated into the EPS). The results highlight the potential of microalgae to produce EPS and flocculate microplastics, contributing to their vertical transport and consequent deposition. Thus, this work shows the potential of microalgae as biocompatible solutions to water microplastics treatment.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationCunha, C., Faria, M., Nogueira, N., Ferreira, A., & Cordeiro, N. (2019). Marine vs freshwater microalgae exopolymers as biosolutions to microplastics pollution. Environmental pollution, 249, 372-380.pt_PT
dc.identifier.doi10.1016/j.envpol.2019.03.046pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/3306
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMicroalgaept_PT
dc.subjectExopolymers (EPS)pt_PT
dc.subjectMicroplasticspt_PT
dc.subjectHetero-aggregatespt_PT
dc.subjectBiosolutionpt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titleMarine vs freshwater microalgae exopolymers as biosolutions to microplastics pollutionpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage380pt_PT
oaire.citation.startPage372pt_PT
oaire.citation.titleEnvironmental Pollutionpt_PT
oaire.citation.volume249pt_PT
person.familyNameCunha
person.familyNameFaria
person.familyNamecordeiro
person.givenNameCésar
person.givenNameMarisa Camacho Gonçalves
person.givenNamenereida
person.identifier1612636
person.identifier.ciencia-idEC12-B90B-BA98
person.identifier.ciencia-idD716-6F48-AD0E
person.identifier.ciencia-id521A-0F62-EA39
person.identifier.orcid0000-0003-3811-2932
person.identifier.orcid0000-0002-9158-6961
person.identifier.orcid0000-0001-6006-3415
person.identifier.ridO-2253-2019
person.identifier.scopus-author-id7004319456
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication78f9a06c-3911-42c4-9899-45aafac82c73
relation.isAuthorOfPublication57ef72f0-8e40-4853-b4ab-416884e127fa
relation.isAuthorOfPublication3d02b657-c48c-4f56-813a-1284b81960f3
relation.isAuthorOfPublication.latestForDiscovery57ef72f0-8e40-4853-b4ab-416884e127fa

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