Artigo de periodico

Efficient dairy wastewater treatment and power production using graphite cylinders electrodes as a biofilter in microbial fuel cell (2022)

• Authors:
  • Marassi, Rodrigo José
  • Lopez, Mariella. B. Galeano
  • Queiroz, Lucas Gonçalves
  • Silva, Daniel Clemente Vieira Rego
  • Silva, Flávio Teixeira
  • Paiva, Teresa Cristina Brazil de
  • Silva, Gilmar Clemente
• USP affiliated authors: SILVA, FLÁVIO TEIXEIRA DA - EEL ; PAIVA, TERESA CRISTINA BRAZIL DE - EEL ; QUEIROZ, LUCAS GONÇALVES - IQ
• Unidades: EEL; IQ
• DOI: 10.1016/j.bej.2021.108283
• Subjects: ELETROFISIOLOGIA; BIOTECNOLOGIA
• Agências de fomento:
  • Financiamento CAPES
• Language: Inglês
• Abstract: The goal of this work was to evaluate the efficiency of an air-cathode microbial fuel cell (MFC), operating in semi-continuous downflow mode. The MFC was inoculated with a consortium of Shewanella oneidensis and Clostridium butyricum. It was fed using a synthetic medium with progressively increasing dairy wastewater (DWW) concentrations in the startup (15 days), acclimatization (30 days), and treatment (75 days) phases. This approach enabled removal of 89% of the total COD and 91% of the total BOD, after 90 days of operation. These efficiencies were improved with step change of external resistance (Rext.) from 1.0 to 0.5 kΩ. Electrochemical impedance spectroscopy analysis indicated the formation of more complex biointerface associated with change of Rext. The maximum power density was 3.5 W∙m− 3 at 1.0 A∙m− 3 , during the startup, while the Coulombic efficiency (CE) was 4.5 at the end of the operation. The MFC process showed high efficiency for the removal of organic nitrogen (85%), phosphorus (92%), nitrate (100%), and sulfate (88%). Additionally, the treated DWW effluent presented no acute toxic effect towards Daphnia similis. Overall, it could be concluded that applying gradual increments of the DWW concentration resulted in highly efficient treatment.
• Imprenta:
  • Publisher: Elsevier
  • Date published: 2022
• Source:
  • Título: Biochemical engineering journal
  • ISSN: 1369703X
  • Volume/Número/Paginação/Ano: v.178, p.108283-, 2022

Informações sobre o DOI: 10.1016/j.bej.2021.108283 (Fonte: oaDOI API)
• Este periódico é de assinatura
• Este artigo NÃO é de acesso aberto
  
• Cor do Acesso Aberto: closed

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How to cite

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• ABNT

  MARASSI, Rodrigo José et al. Efficient dairy wastewater treatment and power production using graphite cylinders electrodes as a biofilter in microbial fuel cell. Biochemical engineering journal, v. 178, p. 108283-, 2022Tradução . . Disponível em: https://doi.org/10.1016/j.bej.2021.108283. Acesso em: 28 dez. 2025.

• APA

  Marassi, R. J., Lopez, M. B. G., Queiroz, L. G., Silva, D. C. V. R., Silva, F. T., Paiva, T. C. B. de, & Silva, G. C. (2022). Efficient dairy wastewater treatment and power production using graphite cylinders electrodes as a biofilter in microbial fuel cell. Biochemical engineering journal, 178, 108283-. doi:10.1016/j.bej.2021.108283

• NLM

  Marassi RJ, Lopez MBG, Queiroz LG, Silva DCVR, Silva FT, Paiva TCB de, Silva GC. Efficient dairy wastewater treatment and power production using graphite cylinders electrodes as a biofilter in microbial fuel cell [Internet]. Biochemical engineering journal. 2022 ;178 108283-.[citado 2025 dez. 28 ] Available from: https://doi.org/10.1016/j.bej.2021.108283

• Vancouver

  Marassi RJ, Lopez MBG, Queiroz LG, Silva DCVR, Silva FT, Paiva TCB de, Silva GC. Efficient dairy wastewater treatment and power production using graphite cylinders electrodes as a biofilter in microbial fuel cell [Internet]. Biochemical engineering journal. 2022 ;178 108283-.[citado 2025 dez. 28 ] Available from: https://doi.org/10.1016/j.bej.2021.108283

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