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Municipal and industrial wastewater blending: Effect of the carbon/ nitrogen ratio on microalgae productivity and biocompound accumulation

2024-10Journal article Open access
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dc.contributor.authorPereira, Alexia Saleme Aona de Paula
dc.contributor.authorMagalhães, Iara
dc.contributor.authorSilva, Thiago
dc.contributor.authorReis, Alberto
dc.contributor.authorde Aguiar do Couto, Eduardo
dc.contributor.authorCalijuri, Maria Lucia
dc.date.accessioned2024-11-11T16:22:26Z
dc.date.available2024-11-11T16:22:26Z
dc.date.issued2024-10
dc.description.abstractABSTRACT: Municipal wastewater (MW) and industrial wastewater from juice processing (IWJ) were blended in different proportions to assess the effect of the carbon/nitrogen (C/N) ratio on pollutant removal, microalgal biomass (MB) cultivation, and the accumulation of carotenoids and biocompounds. MB development was not observed in treatments with higher C/N ratios (>30.67). The wastewater mixture favored the removal of dissolved organic carbon (75.61 and 81.90%) and soluble chemical oxygen demand (66.78-88.85%), compared to the treatment composed exclusively of MW (T7). Treatments T3 and T6 (C/N ratio equal to 30.67 and 7.52, respectively) showed higher Chlorophyll-a concentrations, 1.47 and 1.54 times higher than T7 (C/N ratio 1.75). It was also observed that the C/N ratio of 30.67 favored the accumulation of carbohydrates and lipids (30.07% and 26.39%, respectively), while the C/N ratio of 7.52 improved protein accumulation (33.00%). The fatty acids C16:0, C18:1, C18:2, and C18:3 had the highest concentrations. Additionally, increasing the C/N ratio can be an efficient strategy to improve the production of fatty acids for biofuels, mainly due to the increased concentration of shorter-chain fatty acids (C16:0). These findings suggest that blending wastewater not only enhances treatment performance but also increases the accumulation of valuable carbohydrates and lipids in MB, and optimizes fatty acid production for biofuel applications. This research represents significant progress towards feasibility of using MB produced from wastewater.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationPereira, A., Magalhães, I., Silva, T., Reis, A., Couto, E. & Calijuri, M.L. (2024) Municipal and industrial wastewater blending: Effect of the carbon/ nitrogen ratio on microalgae productivity and biocompound accumulation. In: Journal of Environmental Management, 2024, vol. 370, article nº122760. https://doi.org/10.1016/j.jenvman.2024.122760pt_PT
dc.identifier.doi10.1016/j.jenvman.2024.122760pt_PT
dc.identifier.eissn1095-8630
dc.identifier.issn0301-4797
dc.identifier.urihttp://hdl.handle.net/10400.9/4379
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttps://doi.org/10.1016/j.jenvman.2024.122760pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMicroalgaept_PT
dc.subjectBiomasspt_PT
dc.subjectWastewater treatmentpt_PT
dc.subjectIndustrial wastewaterspt_PT
dc.titleMunicipal and industrial wastewater blending: Effect of the carbon/ nitrogen ratio on microalgae productivity and biocompound accumulationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleJournal of Environmental Managementpt_PT
oaire.citation.volume370pt_PT
person.familyNameSaleme Aona de Paula Pereira
person.familyNameMagalhães
person.familyNameSilva
person.familyNameDelgado dos Reis
person.familyNamede Aguiar do Couto
person.familyNameCalijuri
person.givenNameAlexia
person.givenNameIara
person.givenNameThiago
person.givenNameAlberto José
person.givenNameEduardo
person.givenNameMaria Lucia
person.identifier.ciencia-idE317-E8DB-14E3
person.identifier.orcid0000-0002-0720-5098
person.identifier.orcid0000-0002-0802-5996
person.identifier.orcid0000-0002-6108-8793
person.identifier.orcid0000-0002-1405-9981
person.identifier.orcid0000-0002-2976-9302
person.identifier.orcid0000-0002-0918-2475
person.identifier.ridAAW-5853-2020
person.identifier.ridAAU-5692-2020
person.identifier.ridI-4426-2014
person.identifier.ridG-1546-2012
person.identifier.scopus-author-id57205642036
person.identifier.scopus-author-id57217314435
person.identifier.scopus-author-id57218439017
person.identifier.scopus-author-id57204744399
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication3427574e-7518-4cd4-9913-294f6d51b28b
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