Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.9/2402
Título: Scenedesmus obliquus as feedstock for biohydrogen production by Enterobacter aerogenes and Clostridium butyricum
Autor: Batista, Ana Paula
Moura, Patrícia
Marques, Paula Alexandra
Ortigueira, J.
Alves, Luís Manuel
Gouveia, L.
Palavras-chave: Biohydrogen
Scenedesmus obliquus
Dark fermentation
Enterobacter aerogenes
Clostridium butyricum
Data: 2014
Editora: Elsevier
Citação: Batista, A.P.; Moura, P.; Marques, P.A.S.S.; Ortigueira, J.; Alves, L.; Gouveia, L. Scenedesmus obliquus as feedstock for biohydrogen production by Enterobacter aerogenes and Clostridium butyricum. In: Fuel, 2014, Vol. 117, p. 537-543
Resumo: Hydrogen (H2) gas is seen as an ideal future energy carrier because it is easily converted into electricity in fuel cells, liberates a large amount of energy per unit mass, and generates no air pollutants. In this work, biological hydrogen (bioH2) was produced from the microalgal biomass of Scenedesmus obliquus which was used as a substrate for the fermentation by Enterobacter aerogenes ATCC 13048 and Clostridium butyricum DSM 10702. The bioH2 produced by each strain was assessed for different S. obliquus biomass concentrations, using both dried (5% moisture) and ‘‘wet’’ (69% moisture) biomass. The highest bioH2 production yields obtained were 57.6 mL H2/g VSalga from 2.5 galga/L by E. aerogenes and 113.1 mL H2/g VSalga from 50.0 galga/L by C. butyricum. The bioH2 production rates, and biogas purity attained by using the wet biomass as a fermentation substrate were similar or higher than those obtained with the dried microalga. This means that the drying step is not needed and therefore saves considerable energy as this is one of the highest energy demanding stages when using this feedstock in fermentations for biofuels production.
URI: http://hdl.handle.net/10400.9/2402
ISSN: 0016-2361
Versão do Editor: http://dx.doi.org/10.1016/j.fuel.2013.09.077
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