Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/69637
Título: | Intensification of methane production from waste frying oil in a biogas-lift bioreactor |
Autor(es): | Duarte, Maria Salomé Lira Sinisgalli, Erika Cavaleiro, Ana Júlia Viana Bertin, Lorenzo Alves, M. M. Pereira, M. A. |
Palavras-chave: | Biogas upgrading Biogas-lift bioreactor Waste-frying oil Anaerobic digestion |
Data: | Mai-2021 |
Editora: | Elsevier |
Revista: | Renewable Energy |
Citação: | Duarte, Maria Salomé; Sinisgalli, Erika; Cavaleiro, Ana Júlia; Bertin, Lorenzo; Alves, M. Madalena; Pereira, M. Alcina, Intensification of methane production from waste frying oil in a biogas-lift bioreactor. Renewable Energy, 168, 1141-1148, 2021 |
Resumo(s): | Biogas upgrading from anaerobic digestion of waste frying oils (WFO) was accessed in this study. For that, two bioreactors (Rb-biogas-lift bioreactor with gas and liquid recirculation, Rc-control reactor with liquid recirculation) were fed three times per week, with a mixture of WFO, glycerol and volatile fatty acids (VFA). Rb produced 1.4 times more biogas with higher methane content (79%) than Rc (67%). Higher relative abundance of hydrogenotrophic methanogens (34%-39%) was observed in Rb, when compared to Rc (16%-21%). The relative abundance of Sprochaetia class, which includes some homoacetogens/syntrophic acetate oxidizing genera, was also higher in Rb. This work shows that biogas recirculation applied in the biogas-lift bioreactor facilitated WFO degradation, most probably due to the selective enrichment of hydrogenotrophic methanogens. Recirculation of CO2 present in the biogas and reverse homoacetogenesis (i.e. syntrophic acetate oxidation) seem to be the main factors involved in the stimulation of hydrogenotrophic methanogenesis. |
Tipo: | Artigo |
Descrição: | "Available online 31 December 2020" |
URI: | https://hdl.handle.net/1822/69637 |
DOI: | 10.1016/j.renene.2020.12.114 |
ISSN: | 0960-1481 |
e-ISSN: | 1879-0682 |
Versão da editora: | http://www.elsevier.com/locate/issn/09601481 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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document_54095_1.pdf | 888,06 kB | Adobe PDF | Ver/Abrir |