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

2024-11Journal article Open access
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dc.contributor.authorFerreira, Alice
dc.contributor.authorVladić, Jelena
dc.contributor.authorCorrêa, Diego de Oliveira
dc.contributor.authorButzke, Valéria Louzada Leal
dc.contributor.authorMartins, Pedro L.
dc.contributor.authorRibeiro, Belina
dc.contributor.authorMarques-dos-Santos, Cláudia
dc.contributor.authorAcién, F. Gabriel
dc.contributor.authorGouveia, Luisa
dc.date.accessioned2024-11-07T14:11:11Z
dc.date.available2024-11-07T14:11:11Z
dc.date.issued2024-11
dc.description.abstractMicroalgae 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 degrees 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 degrees 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 degrees C: 120-123 % for both loads; 170 degrees C: 115% for 1:80). To-PWW extract at 120 degrees 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.eng
dc.description.sponsorshipLISBOA-01-0145-FEDER-022059; P320RT0025; LA/P/0008/2020; SFRH/BD/121704/2016; 200258/2022-2; 142081/2020-CEECIND/04909/20225; LA/P/0092/2020
dc.identifier.doi10.1016/j.eti.2024.103797
dc.identifier.issn2352-1864
dc.identifier.urihttp://hdl.handle.net/10400.1/26227
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationCombination of Constructed Vertical flow Wetlands, Microalgae Photobioreactor and Microbial Fuel Cell (KIT) for wastewater treatment in small pig production farms
dc.relationAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
dc.relationAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
dc.relationDevelopment of agricultural bioproducts biofertilizers, biostimulants and biopesticides from piggery wastewater treatment-based microalgae
dc.relationSea, Sand and People. An Environmental History of Coastal Dunes
dc.relationForest Research Centre
dc.relation.ispartofEnvironmental Technology & Innovation
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectWastewater treatment
dc.subjectTetradesmus obliquus
dc.subjectSubcritical water extraction
dc.subjectBiostimulants
dc.subjectBiofertilizers
dc.subjectAmino acids
dc.titleInnovative approach in sustainable agriculture: harnessing microalgae potential via subcritical water extractioneng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCombination of Constructed Vertical flow Wetlands, Microalgae Photobioreactor and Microbial Fuel Cell (KIT) for wastewater treatment in small pig production farms
oaire.awardTitleAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
oaire.awardTitleAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
oaire.awardTitleDevelopment of agricultural bioproducts biofertilizers, biostimulants and biopesticides from piggery wastewater treatment-based microalgae
oaire.awardTitleSea, Sand and People. An Environmental History of Coastal Dunes
oaire.awardTitleForest Research Centre
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/DRI%2FIndia%2F0609%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50006%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50006%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F144122%2F2019/PT
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/802918/EU
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00239%2F2020/PT
oaire.citation.startPage103797
oaire.citation.titleEnvironmental Technology and Innovation
oaire.citation.volume36
oaire.fundingStream3599-PPCDT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamH2020
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameGouveia
person.givenNameLuisa
person.identifierH-4046-2011
person.identifier.ciencia-id581B-924A-84DD
person.identifier.orcid0000-0003-0196-6360
person.identifier.scopus-author-id7004135834
project.funder.identifierhttp://doi.org/10.13039/501100001871
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project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameEuropean Commission
project.funder.nameFundação para a Ciência e a Tecnologia
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