Influence of carbon electrode material on energy recovery from winery wastewater using a dual-chamber microbial fuel cell

Autor(es)

Penteado, Eduardo D. ; Fernandez-Marchante, Carmen M. ; Zaiat, Marcelo ; Gonzalez, Ernesto R. ; Rodrigo, Manuel A.

• Tipo de documento: Artigo Científico
• Fonte: ENVIRONMENTAL TECHNOLOGY; v. 38, n. 11, p. 1333-1341, 2017.
• Citações Web of Science: 7

Resumo

The aim of this work was to evaluate three carbon materials as anodes in microbial fuel cells (MFCs), clarifying their influence on the generation of electricity and on the treatability of winery wastewater, a highly organic-loaded waste. The electrode materials tested were carbon felt, carbon cloth and carbon paper and they were used at the same time as anode and cathode in the tests. The MFC equipped with carbon felt reached the highest voltage and power (72mV and 420mWm(-2), respectively), while the lowest values were observed when carbon paper was used as electrode (0.2mV and 8.3710(-6)mWm(-2), respectively). Chemical oxygen demand (COD) removal from the wastewater was observed to depend on the electrode material, as well. When carbon felt was used, the MFC showed the highest average organic matter consumption rate (650mg CODL(-1)d(-1)), whereas by using carbon paper the rate decreased to 270mg CODL(-1)d(-1). Therefore, both electricity generation and organic matter removal are strongly related not to the chemical composition of the electrode (which was graphite carbon in the three electrodes), but to its surface features and, consequently, to the amount of biomass adhered to the electrode surface. (AU)

• Processo FAPESP: 09/15984-0 - Produção de bioenergia no tratamento de águas residuárias e adequação ambiental dos efluentes e resíduos gerados
• Beneficiário: Marcelo Zaiat
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 14/07904-5 - Tratamento de água residuária de vinicultura em célula a combustível microbiana
• Beneficiário: Eduardo Dellosso Penteado
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 11/23026-0 - Tratamento de águas residuárias em células a combustíveis microbianas e geração de energia elétrica direta: fundamentos e aplicação
• Beneficiário: Eduardo Dellosso Penteado
• Modalidade de apoio: Bolsas no Brasil - Doutorado