Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.9/2590
Título: Combining urban wastewater treatment with biohydrogen production: An integrated microalgae-based approach
Autor: Batista, Ana Paula
Ambrosano, Lucas
Graça, Sofia
Sousa, Catarina
Marques, Paula Alexandra
Ribeiro, Belina
Botrel, Elberis P.
Neto, Pedro Castro
Gouveia, L.
Palavras-chave: Microalgae
Wastewater treatment
Biohydrogen
Dark fermentation
Data: 2015
Editora: Elsevier
Citação: Batista, A.P.; Ambrosano, L.; Graça, S.; Sousa, C.; Marques, P.A.; Ribeiro, B.; Botrel, E.P.; Neto, P.C.; Gouveia, L. - Combining urban wastewater treatment with biohydrogen production: An integrated microalgae-based approach. In: Bioresource Technology, 2015, Vol. 184, p.230-235
Resumo: The aim of the present work was the simultaneous treatment of urban wastewater using microalgae and the energetic valorization of the obtained biomass. Chlorella vulgaris (Cv), Scenedesmus obliquus (Sc) and a naturally occurring algal Consortium C (ConsC) were grown in an urban wastewater. The nutrient removals were quite high and the treated water fits the legislation (PT Dec-Lei 236/98) in what concerns the parameters analysed (N, P, COD). After nutrient depletion the microalgae remained two more weeks in the photobioreactor (PBR) under nutritional stress conditions, to induce sugar accumulation (22–43%). The stressed biomass was converted into biohydrogen (bioH2), a clean energy carrier, through dark fermentation by a strain of the bacteria Enterobacter aerogenes. The fermentation kinetics were monitored and fitted to a modified Gompertz model. The highest bioH2 production yield was obtained for S. obliquus (56.8 mL H2/gVS) which was very similar when using the same algae grown in synthetic media.
URI: http://hdl.handle.net/10400.9/2590
ISSN: 0960-8524
Versão do Editor: http://dx.doi.org/10.1016/j.biortech.2014.10.064
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