Ethanol generation, oxidation and energy production in a cooperative bioelectrochemical system

Autor(es)

Pagnoncelli, Kamila C. ^[1] ; Pereira, Andressa R. ^[1] ; Sedenho, Graziela C. ^[1] ; Bertaglia, Thiago ^[1] ; Crespilho, Frank N. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Sao Carlos Inst Chem, BR-13560970 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: BIOELECTROCHEMISTRY; v. 122, p. 11-25, AUG 2018.
• Citações Web of Science: 0

Resumo

Integrating in situ biofuel production and energy conversion into a single system ensures the production of more robust networks as well as more renewable technologies. For this purpose, identifying and developing new biocatalysts is crucial. Herein, is reported a bioelectrochemical system consisting of alcohol dehydrogenase (ADH) and Saccharomyces cerevisiae, wherein both function cooperatively for ethanol production and its bioelectrochemical oxidation. Here, it is shown that it is possible to produce ethanol and use it as a biofuel in a tandem manner. The strategy is to employ flexible carbon fibres (FCF) electrode that could adsorb both the enzyme and the yeast cells. Glucose is used as a substrate for the yeast for the production of ethanol, while the enzyme is used to catalyse the oxidation of ethanol to acetaldehyde. Regarding the generation of reliable electricity based on electrochemical systems, the biosystem proposed in this study operates at a low temperature and ethanol production is proportional to the generated current. With further optimisation of electrode design, we envision the use of the cooperative biofuel cell for energy conversion and management of organic compounds. (C) 2018 Elsevier B.V. All tights reserved. (AU)

• Processo FAPESP: 15/16672-3 - Desenvolvimento de Bioeletrodos de Alto Desempenho para Miniaturização de Biocélulas a Combustível
• Beneficiário: Frank Nelson Crespilho
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/14262-7 - Filmes nanoestruturados de materiais de interesse biológico
• Beneficiário: Osvaldo Novais de Oliveira Junior
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 13/19908-2 - Estudo bioeletroquímico da enzima glicose oxidase e glicose oxidase deglicosilada para aplicação em biocélulas a combustível
• Beneficiário: Andressa Ribeiro Pereira
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 15/22973-6 - Desenvolvimento de Biocélulas a Combustível Microbiológicas para Bioprodução e Oxidação de Etanol
• Beneficiário: Graziela Cristina Sedenho
• Modalidade de apoio: Bolsas no Brasil - Doutorado