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Enhancing microalgae biomass production: Exploring improved scraping frequency in a hybrid cultivation system

2024-03Journal article Open access
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dc.contributor.authorSilva, Thiago
dc.contributor.authorPereira, Alexia Saleme Aona de Paula
dc.contributor.authorFerreira, Jessica
dc.contributor.authorLorentz, Juliana F.
dc.contributor.authorde Assis, Marilia Luise
dc.contributor.authorAssemany, Paula
dc.contributor.authorReis, Alberto
dc.contributor.authorCalijuri, Maria Lucia
dc.date.accessioned2024-05-24T11:11:50Z
dc.date.available2024-05-24T11:11:50Z
dc.date.issued2024-03
dc.description.abstractABSTRACT: Recently, hybrid systems, such as those incorporating high-rate algal ponds (HRAPs) and biofilm reactors (BRs), have shown promise in treating domestic wastewater while cultivating microalgae. In this context, the objective of the present study was to determine an improved scraping frequency to maximize microalgae biomass productivity in a mix of industrial (fruit-based juice production) and domestic wastewater. The mix was set to balance the carbon/nitrogen ratio. The scraping strategy involved maintaining 1 cm wide stripes to retain an inoculum in the reactor. Three scraping frequencies (2, 4, and 6 days) were evaluated. The findings indicate that a scraping frequency of each 2 days provided the highest biomass productivity (18.75 g total volatile solids m(- 2) d(-1)). The species' behavior varied with frequency: Chlorella vulgaris was abundant at 6-day intervals, whereas Tetradesmus obliquus favored shorter intervals. Biomass from more frequent scraping demonstrated a higher lipid content (15.45%). Extrapolymeric substance production was also highest at the 2-day frequency. Concerning wastewater treatment, the system removed 93% of dissolved organic carbon and similar to 100% of ammoniacal nitrogen. Combining industrial and domestic wastewater sources to balance the carbon/nitrogen ratio enhanced treatment efficiency and biomass yield. This study highlights the potential of adjusting scraping frequencies in hybrid systems for improved wastewater treatment and microalgae production.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSilva, T.A., Pereira, Alexia S.A.P., Ferreira, J., Lorentz, J.F., Assis, M.L., Assemany, P., Reis, A. & Calijuri, M.L. (2024) Enhancing microalgae biomass production: Exploring improved scraping frequency in a hybrid cultivation system. In: Journal of Environmental Management, 2024, vol. 355, article nº 120505. https://doi.org/10.1016/j.jenvman.2024.120505pt_PT
dc.identifier.doi10.1016/j.jenvman.2024.120505pt_PT
dc.identifier.eissn1095-8630
dc.identifier.issn0301-4797
dc.identifier.urihttp://hdl.handle.net/10400.9/4302
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttps://doi.org/10.1016/j.jenvman.2024.120505pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMicroalgaept_PT
dc.subjectWastewater treatmentpt_PT
dc.subjectBiofilmspt_PT
dc.subjectDomestic sewagept_PT
dc.subjectHybrid systemspt_PT
dc.titleEnhancing microalgae biomass production: Exploring improved scraping frequency in a hybrid cultivation systempt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleJournal of Environmental Managementpt_PT
oaire.citation.volume355pt_PT
person.familyNameSilva
person.familyNameSaleme Aona de Paula Pereira
person.familyNameFerreira Lorentz
person.familyNamePeixoto Assemany
person.familyNameDelgado dos Reis
person.familyNameCalijuri
person.givenNameThiago
person.givenNameAlexia
person.givenNameJuliana
person.givenNamePaula
person.givenNameAlberto José
person.givenNameMaria Lucia
person.identifier.ciencia-idE317-E8DB-14E3
person.identifier.orcid0000-0002-6108-8793
person.identifier.orcid0000-0002-0720-5098
person.identifier.orcid0000-0002-4792-3326
person.identifier.orcid0000-0001-7596-7804
person.identifier.orcid0000-0002-1405-9981
person.identifier.orcid0000-0002-0918-2475
person.identifier.ridAAW-5853-2020
person.identifier.ridE-1248-2014
person.identifier.ridG-1546-2012
person.identifier.scopus-author-id57218439017
person.identifier.scopus-author-id57205642036
person.identifier.scopus-author-id36973324400
person.identifier.scopus-author-id55632236000
person.identifier.scopus-author-id57204744399
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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