Electricity generation from young landfill leachate in a microbial fuel cell with a new electrode material.
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/m² 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.
Department of Environmental Engineering, Yildiz Technical University, Davutpasa Campus, Esenler, Istanbul, Turkey. bestamin.ozkaya@gmail.com
Bestamin
B
Özkaya
Afşin Yusuf
AY
Cetinkaya
Mehmet
M
Cakmakci
Doğan
D
Karadağ
Erkan
E
Sahinkaya
D001673:Biodegradation, Environmental; D001674:Bioelectric Energy Sources; D057005:Bioengineering; D057919:Biological Oxygen Demand Analysis; D004560:Electricity; D004566:Electrodes; D012037:Refuse Disposal; D014025:Titanium; D014865:Waste Disposal, Fluid / Q000379:methods*
C009495:titanium dioxide; D014025:Titanium