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Innovative approach in sustainable agriculture: Harnessing microalgae potential via subcritical water extraction

2024-08Journal article Open access
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dc.contributor.authorFerreira, Alice
dc.contributor.authorVladic, Jelena
dc.contributor.authorCorrêa, D. O.
dc.contributor.authorButzke, Valéria Louzada Leal
dc.contributor.authorMartins, Pedro L.
dc.contributor.authorRibeiro, Belina
dc.contributor.authorSantos, Cláudia Marques dos
dc.contributor.authorAcién, F. Gabriel
dc.contributor.authorGouveia, Luisa
dc.date.accessioned2024-08-28T12:02:18Z
dc.date.available2024-08-28T12:02:18Z
dc.date.issued2024-08
dc.description.abstractABSTRACT: Microalgae can contribute to sustainable agriculture and wastewater treatment. This study investigated Tetradesmus obliquus, grown in piggery wastewater (To-PWW), as a biostimulant/biofertilizer compared to biomass grown in synthetic medium (To-B). Subcritical water extraction was tested for disruption/hydrolysis of wet biomass, at three temperatures (120, 170, and 220 °C) and two biomass loads (1:10 and 1:80 (g dry biomass/mL water)). Extracts were evaluated for germination, and root formation/expansion. Residues were quantified for nutrient composition to assess their biofertilizer potential and tested for their affinity to oil compounds for bioremediation. The best germination was achieved by To-B extracts at 170 °C (1:10: 148 % at 0.2 g/L, 1:80: 145 % at 0.5 g/L). Only To-PWW extracts at 0.2 g/L had a significant germination effect (120 °C: 120–123 % for both loads; 170 °C: 115 % for 1:80). To-PWW extract at 120 °C and 1:10 significantly affected cucumber and mung bean root formation (224 and 268 %, respectively). Most extracts significantly enhanced root expansion, with all To-B extracts at 1:10 showing the best results (139–181 %). The residues contained essential nutrients (NPK), indicating their biofertilizer potential, helping decrease synthetic fertilizers demands. To-B residues had high affinity to toluene and diesel but lower to used cooking and car oils. To-PWW showed very low affinity to all oil compounds. Finally, all residues were only able to form stable emulsions with the used car oil. This study fully exploits the use of microalgal biomass in sustainable agriculture, producing biostimulant extracts, and residues for biofertilizer and bioremediation, from a low-cost wastewater source.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationFerreira, A., Vladić, J., Corrêa, D., Butzke, V., Martins, P.L., Ribeiro, B., dos Santos, C., Acién, F.G. & Gouveia, L. (2024) Innovative approach in sustainable agriculture: Harnessing microalgae potential via subcritical water extraction. In: Environmental Technology & Innovation, 2024, vol. 36, article nº 103797. https://doi.org/10.1016/j.eti.2024.103797pt_PT
dc.identifier.doi10.1016/j.eti.2024.103797pt_PT
dc.identifier.issn2352-1864
dc.identifier.urihttp://hdl.handle.net/10400.9/4325
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationBiomass and Bioenergy Research Infrastructure
dc.relationAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
dc.relationAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
dc.relationForest Research Centre
dc.relation.publisherversionhttps://doi.org/10.1016/j.eti.2024.103797pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMicroalgaept_PT
dc.subjectTetradesmus obliquuspt_PT
dc.subjectWastewater treatmentpt_PT
dc.subjectBiostimulantpt_PT
dc.subjectBiofertilizerspt_PT
dc.titleInnovative approach in sustainable agriculture: Harnessing microalgae potential via subcritical water extractionpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleBiomass and Bioenergy Research Infrastructure
oaire.awardTitleAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
oaire.awardTitleAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
oaire.awardTitleForest Research Centre
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9444 - RNIIIE/PINFRA%2F22059%2F2016/PT
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oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00239%2F2020/PT
oaire.citation.titleEnvironmental Technology & Innovationpt_PT
oaire.citation.volume36pt_PT
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person.familyNameFerreira
person.familyNameVladic
person.familyNamede Oliveira Corrêa
person.familyNameL. L. Butzke
person.familyNameRibeiro
person.familyNameGouveia
person.givenNameAlice
person.givenNameJelena
person.givenNameDiego
person.givenNameValéria
person.givenNameBelina
person.givenNameLuisa
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person.identifier.ciencia-id581B-924A-84DD
person.identifier.orcid0000-0002-2397-3943
person.identifier.orcid0000-0002-3891-7266
person.identifier.orcid0000-0003-1682-5501
person.identifier.orcid0000-0002-4392-9165
person.identifier.orcid0000-0001-5145-2486
person.identifier.orcid0000-0003-0196-6360
person.identifier.ridE-6373-2015
person.identifier.scopus-author-id55919400200
person.identifier.scopus-author-id7004135834
project.funder.identifierhttp://doi.org/10.13039/501100001871
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