Continuous flow membrane-less air cathode microbial fuel cell with spunbonded olefin diffusion layer


TUĞTAŞ KARNABAT A. E., ÇAVDAR P., ÇALLI B.

BIORESOURCE TECHNOLOGY, cilt.102, sa.22, ss.10425-10430, 2011 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 102 Sayı: 22
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1016/j.biortech.2011.08.082
  • Dergi Adı: BIORESOURCE TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.10425-10430
  • Anahtar Kelimeler: Diffusion, Impedance analysis, Oxygen transfer, Olefin sheet, PTFE, POWER-GENERATION, MARINE-SEDIMENTS, ELECTRICITY, PERFORMANCE, CATALYSTS, BINDERS, ENERGY
  • Marmara Üniversitesi Adresli: Evet

Özet

The power production performance of a membrane-less air-cathode microbial fuel cell was evaluated for 53 days. Anode and cathode electrodes and the micro-fiber cloth separator were configured by sandwiching the separator between two electrodes. In addition, the air-facing side of the cathode was covered with a spunbonded olefin sheet instead of polytetrafluoroethylene (PTFE) coating to control oxygen diffusion and water loss. The configuration resulted in a low resistance of about 4 Omega and a maximum power density of 750 mW/m(2). However, as a result of a gradual decrease in the cathode potential, maximum power density decreased to 280 mW/m(2). The declining power output was attributed to loss of platinum catalyst (8.26%) and biomass growth (38.44%) on the cathode. Coulombic efficiencies over 55% and no water leakage showed that the spunbonded olefin sheet covering the air-facing side of the cathode can be a cost-effective alternative to PITE coating. (C) 2011 Elsevier Ltd. All rights reserved.