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Hydrothermal liquefaction of biomass produced from domestic sewage treatment in high-rate ponds

2018Journal article Open access
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dc.contributor.authorDe Aguiar Do Couto, Eduardo
dc.contributor.authorPinto, Filomena
dc.contributor.authorVarela, Francisco
dc.contributor.authorReis, Alberto
dc.contributor.authorCosta, Paula
dc.contributor.authorCalijuri, Maria Lucia
dc.date.accessioned2018-10-15T15:50:25Z
dc.date.available2018-10-15T15:50:25Z
dc.date.issued2018
dc.description.abstractABSTRACT: This study evaluates the application of biomass produced from the treatment of domestic sewage in high-rate ponds (HRPs) as feedstock for the production of bio-oil via hydrothermal liquefaction (HTL). The effects of reaction time, temperature, and biomass/water ratio on the yield of bio-oil were assessed. In addition, a balance of carbon and nitrogen among the products (bio-oil, aqueous phase, solid residue, and gas) was carried out, in order to evaluate the quality of the bio-oil and possibilities for increasing value from the byproducts. In a 15-min operation at 300 degrees C with biomass/water ratio of 1/10 (w.w(-1)), the bio-oil yield was of 44.4% (Dry Ash Free - daf-basis). Under every condition tested, the solid residue was the most abundant byproduct, mostly due to the high ash content in the biomass. The minimum nitrogen recovery in the bio-oil was 57%, obtained in the operation at 275 degrees C, which is considered the main disadvantage of the process. The use of biomass directly after its production may result in an excessive consumption of energy due to the high water content. However, the need for drying is reduced when compared to other microalgal-based bioenergy production processes, potentially achieving a positive energy balance in the HTL.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationCouto, E.A.; Pinto, F.; Varela, F...[et.al.]. - Hydrothermal liquefaction of biomass produced from domestic sewage treatment in high-rate ponds. In: Renewable Energy, 2018, Vol. 118, p. 644-653pt_PT
dc.identifier.issn0960-1481
dc.identifier.urihttp://hdl.handle.net/10400.9/3080
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationBrazilian National Council for Scientific and Technological Development, (CNPq 206664/2014-1)pt_PT
dc.relationBrazilian National Council for Scientific and Technological Development, (CNPq 403013/2013-5)pt_PT
dc.relation.publisherversionhttps://doi.org/10.1016/j.renene.2017.11.041pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMicroalgaept_PT
dc.subjectBiorefinerypt_PT
dc.subjectWastewater treatmentpt_PT
dc.subjectBiodiesel Productionpt_PT
dc.subjectDomestic sewagept_PT
dc.subjectThermochemical conversionpt_PT
dc.titleHydrothermal liquefaction of biomass produced from domestic sewage treatment in high-rate pondspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage653pt_PT
oaire.citation.startPage644pt_PT
oaire.citation.titleRenewable Energypt_PT
oaire.citation.volume118pt_PT
person.familyNamede Aguiar do Couto
person.familyNamePinto
person.familyNameDelgado dos Reis
person.familyNameCosta
person.familyNameCalijuri
person.givenNameEduardo
person.givenNameFilomena
person.givenNameAlberto José
person.givenNamePaula
person.givenNameMaria Lucia
person.identifier.ciencia-idE317-E8DB-14E3
person.identifier.ciencia-id2A1B-0AB6-B0FB
person.identifier.orcid0000-0002-2976-9302
person.identifier.orcid0000-0002-1014-568X
person.identifier.orcid0000-0002-1405-9981
person.identifier.orcid0000-0003-2024-4267
person.identifier.orcid0000-0002-0918-2475
person.identifier.ridI-4426-2014
person.identifier.ridP-6395-2015
person.identifier.ridG-1546-2012
person.identifier.scopus-author-id7102740188
person.identifier.scopus-author-id57204744399
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication115c7b3c-916f-448e-b2d3-c2f3a186d1a2
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