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Nannochloropsis oceanica harvested using electrocoagulation with alternative electrodes: an innovative approach on potential biomass applications

2022-01Journal article Open access
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dc.contributor.authorFigueiredo, Daniel
dc.contributor.authorFerreira, Alice
dc.contributor.authorQuelhas, P.
dc.contributor.authorSchulze, Peter
dc.contributor.authorGouveia, Luisa
dc.date.accessioned2022-02-23T11:38:51Z
dc.date.available2022-02-23T11:38:51Z
dc.date.issued2022-01
dc.description.abstractABSTRACT: Electrocoagulation is a promising technology to harvest microalgal biomass. However, the commonly used aluminum electrodes release undesired salts that decrease biomass value. In this study, alternative iron, zinc, and magnesium electrodes and operational parameters pH, time and current density were studied to harvest Nannochloropsis oceanica. For recovery efficiency and concentration factor the initial pH was most important using iron electrodes, while time and current density were more relevant using zinc and magnesium electrodes. Optimal parameters resulted in biomass recovery efficiencies > 95%, biomass was concentrated 2.8-7.2 times and contained 15.7-29.1% ashes. Elemental analysis revealed metal salts in harvested biomass resulting from electrode corrosion. Finally, ash contents could be reduced by 65% using EDTA as a chelating agent. The electrocoagulation harvested microalgal biomass enriched in essential metals may be a promising bioresource for agricultural growth inducers, or functional ingredients for feed.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationFigueiredo, Daniel... [et.al.] - Nannochloropsis oceanica harvested using electrocoagulation with alternative electrodes: an innovative approach on potential biomass applications. In: Bioresource Technology, 2022, Vol. 344, part B, article nº 126222pt_PT
dc.identifier.doi10.1016/j.biortech.2021.126222pt_PT
dc.identifier.eissn1873-2976
dc.identifier.issn0960-8524
dc.identifier.urihttp://hdl.handle.net/10400.9/3763
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationALGAVALOR -Lisboa-010247-FEDER-035234pt_PT
dc.relation(BBRI)-LISBOA-01-0145-FEDER-022059pt_PT
dc.relationDevelopment of agricultural bioproducts biofertilizers, biostimulants and biopesticides from piggery wastewater treatment-based microalgae
dc.relation.publisherversionhttps://doi.org/10.1016/j.biortech.2021.126222pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMicroalgaept_PT
dc.subjectElectrocoagulationpt_PT
dc.subjectHarvestingpt_PT
dc.subjectBiomass valorisationpt_PT
dc.subjectMetal recoverypt_PT
dc.titleNannochloropsis oceanica harvested using electrocoagulation with alternative electrodes: an innovative approach on potential biomass applicationspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleDevelopment of agricultural bioproducts biofertilizers, biostimulants and biopesticides from piggery wastewater treatment-based microalgae
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F144122%2F2019/PT
oaire.citation.titleBioresource Technologypt_PT
oaire.citation.volume344pt_PT
person.familyNameFigueiredo
person.familyNameFerreira
person.familyNameGouveia
person.givenNameDaniel
person.givenNameAlice
person.givenNameLuisa
person.identifierH-4046-2011
person.identifier.ciencia-id181D-2CFA-B65A
person.identifier.ciencia-idD115-8FF3-9097
person.identifier.ciencia-id581B-924A-84DD
person.identifier.orcid0000-0003-3201-5736
person.identifier.orcid0000-0002-2397-3943
person.identifier.orcid0000-0003-0196-6360
person.identifier.scopus-author-id7004135834
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication124a791b-584b-4c60-b852-bb8ca72e4699
relation.isAuthorOfPublicationd0b70ea9-bb53-452c-ab86-b4bf8aee0249
relation.isAuthorOfPublication63dcbe08-14df-4886-98b7-2945cbe0e062
relation.isAuthorOfPublication.latestForDiscoveryd0b70ea9-bb53-452c-ab86-b4bf8aee0249
relation.isProjectOfPublication57a728de-12ae-4267-819b-6fb5398ad1ea
relation.isProjectOfPublication.latestForDiscovery57a728de-12ae-4267-819b-6fb5398ad1ea

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