A combined model for large scale batch culture MFC-digester with various wastewaters through different populations

Karimi Alavijeh, M ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1016/j.bioelechem.2015.07.003
  3. Publisher: Elsevier , 2015
  4. Abstract:
  5. In this study, a new model of microbial fuel cell (MFC) was obtained for the first time. The modeled MFC was made using a combination of two approaches; the conduction-based method and two-step anaerobic digestion. Performance of the MFC was based on calculations for current evolution and polarization curves with different subsequent variables of the biofilm and anolyte. The model was able to make predictions for performance of the MFC for a simple substrate to more complex ones. The model was successfully validated with a variety of substrates (acetate, glucose and dairy wastewater) and the results were compared with previously published measurements. The model polarization results showed that is able to predict overshoot as a dynamic phenomenon. The ratio of acetoclastic methanogens to electrogens in the biofilm increased from an average value of 0.63×10-2 to 1.17×10-2 by increasing external resistance from 50Ω to 100Ω. The attached to planktonic cells ratio was computed 0.45 for the glucose-fed MFC and for the dairy wastewater-fed MFC at 50Ω was 8.86 and at 100Ω was 5.46
  6. Keywords:
  7. Microbial fuel cell ; Multi-population ; Polarization ; Anaerobic digestion ; Batch cell culture ; Biofilms ; Fuel cells ; Glucose ; Polarization ; Substrates ; Acetoclastic methanogens ; Dairy wastewater ; Dynamic phenomena ; External resistance ; Planktonic cells ; Polarization curves ; Simulation ; Acetic acid ; Calculation ; Measurement ; Methanogen ; Prediction ; waste water
  8. Source: Bioelectrochemistry ; Volume 106 , December , 2015 , Pages 298-307 ; 15675394 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S1567539415300098