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A biorefinery from Nannochloropsis sp. microalga – Energy and CO2 emission and economic analyses

2013Journal article Open access
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dc.contributor.authorFerreira, Ana F.
dc.contributor.authorRibeiro, Lauro A.
dc.contributor.authorBatista, Ana Paula
dc.contributor.authorMarques, Paula
dc.contributor.authorNobre, B. P.
dc.contributor.authorPalavra, António F.
dc.contributor.authorSilva, Patricia P. da
dc.contributor.authorGouveia, Luisa
dc.contributor.authorSilva, Carla M.
dc.date.accessioned2013-10-01T10:55:12Z
dc.date.available2013-10-01T10:55:12Z
dc.date.issued2013
dc.description.abstractAre microalgae a potential energy source for biofuel production? This paper presents the laboratory results from a Nannochloropsis sp. microalga biorefinery for the production of oil, high-value pigments, and biohydrogen (bioH2). The energy consumption and CO2 emissions involved in the whole process (microalgae cultivation, harvest, dewater, mill, extraction and leftover biomass fermentation) were evaluated. An economic evaluation was also performed. Oil was obtained by soxhlet (SE) and supercritical fluid extraction (SFE). The bioH2 was produced by fermentation of the leftover biomass. The oil production pathway by SE shows the lowest value of energy consumption, 177-245 MJ/MJprod, and CO2 emissions, 13–15 kgCO2/MJprod. Despite consuming and emitting c.a. 20% more than the SE pathway, the oil obtained by SFE, proved to be more economically viable, with a cost of 365€/kgoil produced and simultaneously extracting high-value pigments. The bioH2 as co-product may be advantageous in terms of product yield or profit.por
dc.identifier.citationFerreira, Ana F.; Ribeiro, Lauro, A.; Batista, Ana Paula, [et.al.]. A biorefinery from Nannochloropsis sp. microalga – Energy and CO2 emission and economic analyses. In: Bioresource Technology, 2013, Vol. 138, p. 235-244por
dc.identifier.issn0960-8524
dc.identifier.urihttp://hdl.handle.net/10400.9/2010
dc.language.isoengpor
dc.publisherElsevierpor
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.biortech.2013.03.168por
dc.subjectMicroalgaepor
dc.subjectMicroalga biorefinerypor
dc.subjectCO2 emissionspor
dc.subjectEnergypor
dc.subjectEconomic evaluationpor
dc.subjectLife cycle assessmentpor
dc.titleA biorefinery from Nannochloropsis sp. microalga – Energy and CO2 emission and economic analysespor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage244por
oaire.citation.startPage235por
oaire.citation.titleBioresource Technologypor
oaire.citation.volume138por
person.familyNameMarques
person.familyNameNobre
person.familyNameGouveia
person.givenNamePaula
person.givenNameBeatriz
person.givenNameLuisa
person.identifierH-4046-2011
person.identifier.ciencia-id6B16-BB35-47F5
person.identifier.ciencia-idFE18-BFAF-9ED9
person.identifier.ciencia-id581B-924A-84DD
person.identifier.orcid0000-0002-0033-9333
person.identifier.orcid0000-0002-6397-9397
person.identifier.orcid0000-0003-0196-6360
person.identifier.ridJ-3977-2013
person.identifier.scopus-author-id6602872178
person.identifier.scopus-author-id7004135834
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationd5d8b14d-fe13-41e1-a7d0-ae1816ebe45c
relation.isAuthorOfPublicationcd73527f-0305-4b2f-9022-e4f66def4d43
relation.isAuthorOfPublication63dcbe08-14df-4886-98b7-2945cbe0e062
relation.isAuthorOfPublication.latestForDiscoverycd73527f-0305-4b2f-9022-e4f66def4d43

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