Evaluation of semi-continuous operation to hydrogen and volatile fatty acids production using raw glycerol as substrate
Two fermenters were operated by semi-continuous mode with suspended biomass and glycerol at concentrations of 10 and 50 g/L to evaluate the semi-continuous operational conditions to hydrogen and volatile fatty acids production. A high hydrogen production in the semi-continuous reactors at the experi...
| Autores: | , , , , |
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| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2020 |
| País: | Brasil |
| Recursos: | Universidade Federal do Ceará (UFC) |
| Repositório: | Repositório Institucional da Universidade Federal do Ceará (UFC) |
| Idioma: | inglês |
| OAI Identifier: | oai:repositorio.ufc.br:riufc/79155 |
| Acesso em linha: | http://repositorio.ufc.br/handle/riufc/79155 https://doi.org/10.1016/j.renene.2020.01.152 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Glicerol Reatores semicontínuos Hidrogênio Glycerol Semi-continuous reactors Hydrogen CNPQ::ENGENHARIAS::ENGENHARIA SANITARIA |
| Resumo: | Two fermenters were operated by semi-continuous mode with suspended biomass and glycerol at concentrations of 10 and 50 g/L to evaluate the semi-continuous operational conditions to hydrogen and volatile fatty acids production. A high hydrogen production in the semi-continuous reactors at the experiment was observed, with a drop during the test, mainly in the reactor with higher substrate concentration. The yield median of the semi-continuous reactors was 0.25 and 0.01 mol H 2 /mol glycerol, and the volumetric productivity median was 350 and 130 mL H 2 /L.d in SCR1 and SCR2 (10 and 50 g/L), respectively. It was possible to associate the high hydrogen and volatile fatty acids production in the semi-continuous reactors with the bacterial genus Enterobacter, and the low hydrogen production to the bacterial genus Clostridium. |
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