Electricity generation from young landfill leachate in a microbial fuel cell with a new electrode material

Ozkaya B., Cetinkaya A. Y., ÇAKMAKCI M., KARADAĞ D., ŞAHİNKAYA E.

BIOPROCESS AND BIOSYSTEMS ENGINEERING, cilt.36, sa.4, ss.399-405, 2013 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 36 Sayı: 4
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1007/s00449-012-0796-z
  • Dergi Adı: BIOPROCESS AND BIOSYSTEMS ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.399-405
  • Anahtar Kelimeler: Microbial fuel cell, Landfill leachate, Electricity generation, Coulombic efficiency, WATER
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

This study aims at evaluating the performance of a two-chambered continuously fed microbial fuel cell with new Ti-TiO2 electrodes for bioelectricity generation from young landfill leachate at varying strength of wastewater (1-50 COD g/L) and hydraulic retention time (HRT, 0.25-2 days). The COD removal efficiency in the MFC increased with time and reached 45 % at full-strength leachate (50 g/L COD) feeding. The current generation increased with increasing leachate strength and decreasing HRT up to organic loading rate of 100 g COD/L/day. The maximum current density throughout the study was 11 A/m(2) at HRT of 0.5 day and organic loading rate of 67 g COD/L/day. Coulombic efficiency (CE) decreased from 57 % at feed COD concentration of 1 g/L to less than 1 % when feed COD concentration was 50 g/L. Increase in OLR resulted in increase in power output but decrease in CE.