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Exploring different pretreatment methodologies for allowing microalgae growth in undiluted piggery wastewater

2022-02-26Journal article Open Access
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dc.contributor.authorFerreira, Alice
dc.contributor.authorFigueiredo, Daniel
dc.contributor.authorCardeiras, Rodrigo
dc.contributor.authorNabais, Rui
dc.contributor.authorFerreira, Francisca
dc.contributor.authorRibeiro, Belina
dc.contributor.authorCordovil, Cláudia M. d. S.
dc.contributor.authorAcién, F. Gabriel
dc.contributor.authorGouveia, Luisa
dc.date.accessioned2022-03-28T14:18:48Z
dc.date.available2022-03-28T14:18:48Z
dc.date.issued2022-02-26
dc.date.updated2022-03-24T14:47:04Z
dc.description.abstractThe overapplication of manure on agricultural soils leads to nitrogen and phosphorus discharge into the aquatic environment, resulting in serious eutrophication problems and decreased water quality. Piggery wastewater (PWW) can be treated by microalgae to recycle nutrients, but the toxic levels of ammonia and organic matter hinder their growth. Fresh water is usually used to dilute PWW, but it is a scarce resource. The implementation of a pretreatment step before microalgae-based treatment could make PWW suitable for microalgae growth. Electrocoagulation, ammonia stripping, photo-Fenton, and constructed wetlands were evaluated as pretreatment methods to reduce ammonia, chemical oxygen demand (COD), color, and total suspended solids. Moreover, the pretreated PWWs were tested to grow the microalga <i>Tetradesmus obliquus</i>. Photo-Fenton showed the best results among the other pretreatments, achieving removal efficiencies above 90%, except for ammonia. This resulted in <i>T. obliquus</i> being capable of growing on undiluted PWW, even at higher ammonia levels, achieving similar biomass productivity to synthetic medium (66.4 ± 17.8 mg·L<sup>−1</sup>·day<sup>−1</sup> and 60.1 ± 10.4 mg·L<sup>−1</sup>·day<sup>−1</sup>, respectively) almost doubling with pH control (116.5 mg·L<sup>−1</sup>·day<sup>−1</sup>). Thus, this pretreatment seems to be the most promising one to incorporate into microalgae-based treatment systems and must be further explored.pt_PT
dc.description.sponsorshipALGAVALOR—Lisboa-01-0247-FEDER-035234; COMPETE2020; (BBRI)—LISBOA-01-0145-FEDER-022059; CYTED P319RT0025—RENUWAL—Red Iberoamericana para el Tratamiento de Efluentes con Microalgas
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationAgronomy 12 (3): 580 (2022)pt_PT
dc.identifier.doi10.3390/agronomy12030580pt_PT
dc.identifier.issn2073-4395
dc.identifier.urihttp://hdl.handle.net/10400.1/17729
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationDevelopment of agricultural bioproducts biofertilizers, biostimulants and biopesticides from piggery wastewater treatment-based microalgae
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectSwine wastewaterpt_PT
dc.subjectTetradesmus obliquuspt_PT
dc.subjectAmmonia strippingpt_PT
dc.subjectElectrocoagulationpt_PT
dc.subjectPhotoFentonpt_PT
dc.subjectConstructed wetlandpt_PT
dc.titleExploring different pretreatment methodologies for allowing microalgae growth in undiluted piggery wastewaterpt_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.issue3pt_PT
oaire.citation.startPage580pt_PT
oaire.citation.titleAgronomypt_PT
oaire.citation.volume12pt_PT
person.familyNameGouveia
person.givenNameLuisa
person.identifierH-4046-2011
person.identifier.ciencia-id581B-924A-84DD
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.isAuthorOfPublicationf559d57b-b659-4d65-bf6c-698bf99e729b
relation.isAuthorOfPublication.latestForDiscoveryf559d57b-b659-4d65-bf6c-698bf99e729b
relation.isProjectOfPublicationf20303e7-db30-48d5-a3be-2a502d408046
relation.isProjectOfPublication.latestForDiscoveryf20303e7-db30-48d5-a3be-2a502d408046

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