Bioelectricity production using a new electrode in a microbial fuel cell

Ozkaya B., Akoglu B., KARADAĞ D., Aci G., Taskan E., Hasar H.

BIOPROCESS AND BIOSYSTEMS ENGINEERING, cilt.35, sa.7, ss.1219-1227, 2012 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 35 Sayı: 7
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1007/s00449-012-0709-1
  • Dergi Adı: BIOPROCESS AND BIOSYSTEMS ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1219-1227
  • Anahtar Kelimeler: MFC, Ti-TiO2 electrode, Kinetics, Microbial community, ELECTRICITY-GENERATION, BACTERIAL COMMUNITIES, ANODE, PERFORMANCE, DIOXIDE
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

Electrode materials play a key role in enhancing the electricity generation in the microbial fuel cell (MFC). In this study, a new material (Ti-TiO2) was used as an anode electrode and compared with a graphite electrode for electricity generation. Current densities were 476.6 and 31 mA/m(2) for Ti-TiO2 and graphite electrodes, respectively. The PCR-DGGE analysis of enriched microbial communities from estuary revealed that MFC reactors were dominated by Shewanella haliotis, Enterococcus sp., and Enterobacter sp. Bioelectrochemical kinetic works in the MFC with Ti-TiO2 electrode revealed that the parameters by non-linear curve fitting with the confidence bounds of 95% gave good fit with the kinetic constants of eta (difference between the anode potential and anode potential giving one-half of the maximum current density) = 0.35 V, K (s) (Half-saturation constant) = 2.93 mM and J (max) = 0.39 A/m(2) for T = 298 K and F = 96.485 C/mol-e(-). From the results observed, it is clear that Ti-TiO2 electrode is a promising candidate for electricity generation in MFC.