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From piggery wastewater to wheat using microalgae towards zero waste

2023-05Journal article Open access
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dc.contributor.authorFerreira, Alice
dc.contributor.authorFigueiredo, Daniel
dc.contributor.authorFerreira, Francisca
dc.contributor.authorMarujo, Ana
dc.contributor.authorBastos, Carolina R. V.
dc.contributor.authorMartin-Atanes, Guillermo
dc.contributor.authorRibeiro, Belina
dc.contributor.authorŠtěrbová, Karolína
dc.contributor.authorSantos, Cláudia Marques dos
dc.contributor.authorAcién, F. Gabriel
dc.contributor.authorGouveia, Luisa
dc.date.accessioned2023-08-10T13:45:15Z
dc.date.available2023-08-10T13:45:15Z
dc.date.issued2023-05
dc.description.abstractABSTRACT: Microalgae production is still expensive, driving the need to lower costs while strengthening the industry's environmental sustainability. Microalgae are recognized tools for efficient wastewater treatment, offering the recycling of nutrients and water for agriculture, and producing biomass rich in growth-promoting compounds to improve plant productivity and resistance to adverse conditions. The use of wastewater can reduce cultivation costs as it is a source of nutrients and water. Alternative low-cost methods can significantly decrease harvesting costs, which represents one of the most expensive steps of the whole process.The goal of this work was to evaluate the potential of wastewater-grown microalga biomass for agriculture purposes. To reduce production costs, the microalga Tetradesmus obliquus was produced in pre-treated photo-Fenton (PF) piggery wastewater in combination with the use of different harvesting techniques - electro-coagulation, flocculation, and centrifugation, and different combinations. From the wastewater treatment pro-cess, two fractions (biomass and supernatant) were evaluated for germination and growth of wheat (Triticum aestivum L.) plants and compared to non-harvested microalga culture (MC), distilled water, and Hoagland (synthetic) solution. The concentrated resulting from PF was also tested as a biofertilizer.The results confirm that both biomass and supernatants are useful for agricultural applications. The obtained biomass elicited a 20-105 % increase in germination index compared to the control, while supernatants were inhibiting. The opposite trend was observed at later stages of wheat growth, where the nutrient-enriched su-pernatants and the PF concentrate (PF-CC) increased the number of tillers (3-5) and leaves (30-42) after 83 days. Wheat plants treated with MC and PF-CC produced similar number of ears (3.4 & PLUSMN; 0.5 and 6.0 & PLUSMN; 4.1 ears per plant, respectively) than the synthetic control (5.7 & PLUSMN; 1.4) after 182 days. All fractions obtained from the process can be used in a zero-waste process.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationFerreira, Alice...et.al - From piggery wastewater to wheat using microalgae towards zero waste. In: Algal Research, 2023, vol. 72, article nº 103153pt_PT
dc.identifier.doi10.1016/j.algal.2023.103153pt_PT
dc.identifier.issn2211-9264
dc.identifier.urihttp://hdl.handle.net/10400.9/4133
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationALGAVALOR -Lisboa-01-0247-FEDER-035234pt_PT
dc.relationBiofuels Research Infrastructure for Sharing Knowledge II
dc.relationBiomass and Bioenergy Research Infrastructure
dc.relationDevelopment of agricultural bioproducts biofertilizers, biostimulants and biopesticides from piggery wastewater treatment-based microalgae
dc.relation.publisherversionhttps://doi.org/10.1016/j.algal.2023.103153pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMicroalgaept_PT
dc.subjectTetradesmus obliquuspt_PT
dc.subjectWastewater treatmentpt_PT
dc.subjectPiggery effluentpt_PT
dc.subjectBiostimulantpt_PT
dc.subjectBiofertilizerspt_PT
dc.subjectCircular economypt_PT
dc.titleFrom piggery wastewater to wheat using microalgae towards zero wastept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleBiofuels Research Infrastructure for Sharing Knowledge II
oaire.awardTitleBiomass and Bioenergy Research Infrastructure
oaire.awardTitleDevelopment of agricultural bioproducts biofertilizers, biostimulants and biopesticides from piggery wastewater treatment-based microalgae
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/731101/EU
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9444 - RNIIIE/PINFRA%2F22059%2F2016/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F144122%2F2019/PT
oaire.citation.titleAlgal Researchpt_PT
oaire.citation.volume72pt_PT
oaire.fundingStreamH2020
oaire.fundingStream9444 - RNIIIE
person.familyNameFerreira
person.familyNameFigueiredo
person.familyNameRibeiro
person.familyNameGouveia
person.givenNameAlice
person.givenNameDaniel
person.givenNameBelina
person.givenNameLuisa
person.identifierH-4046-2011
person.identifier.ciencia-idD115-8FF3-9097
person.identifier.ciencia-id181D-2CFA-B65A
person.identifier.ciencia-id581B-924A-84DD
person.identifier.orcid0000-0002-2397-3943
person.identifier.orcid0000-0003-3201-5736
person.identifier.orcid0000-0001-5145-2486
person.identifier.orcid0000-0003-0196-6360
person.identifier.scopus-author-id7004135834
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameEuropean Commission
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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