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Biogas production from microalgal biomass produced in the tertiary treatment of urban wastewater: assessment of seasonal variations

2022-08-05Artigo científico Acesso aberto
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dc.contributor.authorBarros, Raúl
dc.contributor.authorRaposo, Sara
dc.contributor.authorMorais, Etiele
dc.contributor.authorRodrigues, Brígida
dc.contributor.authorLourenço Afonso, Valdemira
dc.contributor.authorGonçalves, Pedro
dc.contributor.authorMarques, José
dc.contributor.authorCerqueira, Ricardo
dc.contributor.authorVarela, João
dc.contributor.authorRibau Teixeira, Margarida
dc.contributor.authorBarreira, Luísa
dc.date.accessioned2022-08-30T10:41:16Z
dc.date.available2022-08-30T10:41:16Z
dc.date.issued2022-08-05
dc.date.updated2022-08-11T11:50:01Z
dc.description.abstractThe valorization of microalgal biomass produced during wastewater treatment has the potential to mitigate treatment costs. As contaminated biomass (e.g., with pharmaceuticals, toxic metals, etc.) is often generated, biogas production is considered an effective valorization option. The biomass was obtained from a pilot facility of photobioreactors for tertiary wastewater treatment. The pilots were run for one year with naturally formed microalgal consortia. The biogas was generated in 70 mL crimp-top vials at 35 °C, quantified with a manometer and the methane yield measured by gas chromatography. A maximum biogas production of 311 mL/g volatile solids (VS) with a methane yield of 252 mL/g VS was obtained with the spring samples. These rather low values were not improved using previous thermo-acidic hydrolysis, suggesting that the low intrinsic biodegradable organic matter content of the consortia might be the cause for low yield. Considering the total volume of wastewater treated by this plant and the average amount of methane produced in this study, the substitution of the current tertiary treatment with the one here proposed would reduce the energy consumption of the plant by 20% and create an energy surplus of 2.8%. The implementation of this system would therefore contribute towards meeting the ambitious decarbonization targets established by the EU.pt_PT
dc.description.sponsorshipALG-01-0247-FEDER-035234
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationEnergies 15 (15): 5713 (2022)pt_PT
dc.identifier.doi10.3390/en15155713pt_PT
dc.identifier.eissn1996-1073
dc.identifier.issndoi: 10.3390/en15155713
dc.identifier.urihttp://hdl.handle.net/10400.1/18189
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationAlgarve Centre for Marine Sciences
dc.relationAlgarve Centre for Marine Sciences
dc.relationCentre for Marine and Environmental Research (CIMA)
dc.relationCentre for Marine and Environmental Research
dc.relationAquatic Research Infrastructure Network
dc.relationAn Integrated, Sustainable Process for the Tertiary Treatment of Urban Wastewater using Microalgae in the Algarve region
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectBomethanept_PT
dc.subjectThermo-acidic hydrolysispt_PT
dc.subjectMicroalgal compositionpt_PT
dc.subjectEnergy potentialpt_PT
dc.titleBiogas production from microalgal biomass produced in the tertiary treatment of urban wastewater: assessment of seasonal variationspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleCentre for Marine and Environmental Research (CIMA)
oaire.awardTitleCentre for Marine and Environmental Research
oaire.awardTitleAquatic Research Infrastructure Network
oaire.awardTitleAn Integrated, Sustainable Process for the Tertiary Treatment of Urban Wastewater using Microalgae in the Algarve region
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04326%2F2020/PT
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oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0069%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FBTA-BTA%2F31567%2F2017/PT
oaire.citation.endPage15pt_PT
oaire.citation.issue15pt_PT
oaire.citation.startPage5713pt_PT
oaire.citation.titleEnergiespt_PT
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oaire.fundingStream9471 - RIDTI
person.familyNameJorge de Barros
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person.familyNameLourenço Afonso
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person.familyNameRibau Teixeira
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person.givenNameRaúl José
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person.givenNameBrígida
person.givenNameValdemira
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person.givenNameRicardo
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project.funder.nameFundação para a Ciência e a Tecnologia
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rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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