Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.9/2010
Título: A biorefinery from Nannochloropsis sp. microalga – Energy and CO2 emission and economic analyses
Autor: Ferreira, Ana F.
Ribeiro, Lauro A.
Batista, Ana Paula
Marques, Paula Alexandra
Nobre, Beatriz P.
Palavra, António F.
Silva, Patricia P. da
Gouveia, L.
Silva, Carla M.
Palavras-chave: Microalgae
Microalga biorefinery
CO2 emissions
Energy
Economical evaluation
Life Cycle
Data: 2013
Editora: Elsevier
Citação: Ferreira, 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. 235-244
Resumo: Are 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.
URI: http://hdl.handle.net/10400.9/2010
ISSN: 0960-8524
Versão do Editor: http://dx.doi.org/10.1016/j.biortech.2013.03.168
Aparece nas colecções:UB - Artigos em revistas internacionais

Ficheiros deste registo:
Ficheiro Descrição TamanhoFormato 
BioresourceTechnology_APBatista.pdf181,18 kBAdobe PDFVer/Abrir


FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote Degois 

Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.