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Growth and bioactivity of two chlorophyte (Chlorella and Scenedesmus) strains co-cultured outdoors in two different thin-layer units using municipal wastewater as a nutrient source

2021Journal article Restricted access
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dc.contributor.authorCarneiro, Mariana
dc.contributor.authorRanglová, Karolína
dc.contributor.authorLakatos, Gergely Ernő
dc.contributor.authorCâmara Manoel, João Artur
dc.contributor.authorGrivalský, Tomáš
dc.contributor.authorKozhan, Daniyar Malikuly
dc.contributor.authorToribio, Ana
dc.contributor.authorMoreno, Joaquín
dc.contributor.authorOtero, Ana
dc.contributor.authorVarela, João
dc.contributor.authorMalcata, F. Xavier
dc.contributor.authorSuárez Estrella, Francisca
dc.contributor.authorAcién-Fernándéz, Francisco Gabriel
dc.contributor.authorMolnár, Zoltán
dc.contributor.authorÖrdög, Vince
dc.contributor.authorMasojídek, Jiří
dc.date.accessioned2021-07-09T16:10:32Z
dc.date.available2023-06-01T00:30:15Z
dc.date.issued2021
dc.description.abstractThe application of microalgae in wastewater treatment has recently been at the forefront of interest due to the increasing concern about environmental protection and economic sustainability. This work aimed to study two chlorophyte species, Chlorella vulgaris and Scenedesmus acutus, co-cultured outdoors in centrate of municipal wastewater as a nutrient source. Two different thin-layer units were used in these trials & mdash; thin-layer cascade (TLC) and thin-layer raceway pond (TL-RWP), suitable for this purpose due to their high biomass productivity and better culture transparency when using muddy wastewater. The units were operated in batch, and subsequently in semi-continuous growth regime & mdash; and monitored in terms of photosynthetic performance, growth, nutrient removal rate, and bioactivity. The results showed that the co-cultures grew well in the centrate, achieving the maximum biomass densities of 1.3 and 2.1 g DW L-1 in TLC and TL-RWP, respectively, by the end of the batch regime and 1.9 and 2.0 g DW L-1 by the end of the semi-continuous regime. Although TL-RWP grown cultures showed faster growth, the TLC-one revealed better nutrient removal efficiencies batch wise than the culture grown in TL-RWP & mdash; removing up to 48% of total nitrogen and 43% of total phosphorus. Conversely, the latter was more efficient under the semi-continuous regime (54% and 42% consumption of total nitrogen and phosphorus, respectively). In the harvested biomass, an important antimicrobial activity (specifically antifungal) was detected. In this sense, the in-vitro growth of the oomycete Pythium ultimum was inhibited by up to 45% with regard to the control. However, no biostimulating activity was observed. The present findings confirm the possibility of using these two species for biomass production in municipal wastewater centrate using highly productive thin-layer systems. This technology can be a valuable contribution to circular economy since the produced biomass can be re-applied for agricultural purposes.pt_PT
dc.description.sponsorshipSFRH/BD/129952/2017; UIDB/00511/2020; DINOSSAUR-PTDC/BBB-EBB/1374/2014-POCI-01-0145-FEDER-016640;pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.algal.2021.102299pt_PT
dc.identifier.issn2211-9264
dc.identifier.urihttp://hdl.handle.net/10400.1/16762
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationSustainable Algae Biorefinery for Agriculture aNd Aquaculture
dc.subjectWastewaterpt_PT
dc.subjectCo-culturingpt_PT
dc.subjectThin-layer cascadept_PT
dc.subjectThin-layer raceway pondpt_PT
dc.subjectNutrient removalpt_PT
dc.subjectBioactivitypt_PT
dc.titleGrowth and bioactivity of two chlorophyte (Chlorella and Scenedesmus) strains co-cultured outdoors in two different thin-layer units using municipal wastewater as a nutrient sourcept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleSustainable Algae Biorefinery for Agriculture aNd Aquaculture
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/727874/EU
oaire.citation.startPage102299pt_PT
oaire.citation.titleAlgal Researchpt_PT
oaire.citation.volume56pt_PT
oaire.fundingStreamH2020
person.familyNameVarela
person.givenNameJoão
person.identifier.orcid0000-0003-3101-693X
person.identifier.ridM-4223-2013
person.identifier.scopus-author-id55741416000
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameEuropean Commission
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationd339a9e7-bc32-49c4-ba48-a17343d40092
relation.isAuthorOfPublication.latestForDiscoveryd339a9e7-bc32-49c4-ba48-a17343d40092
relation.isProjectOfPublication999e5933-f9f4-45ac-9d9f-d39e10385532
relation.isProjectOfPublication.latestForDiscovery999e5933-f9f4-45ac-9d9f-d39e10385532

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