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

Bioprocess Biosyst Eng. 2013 Apr;36(4):399-405. doi: 10.1007/s00449-012-0796-z. Epub 2012 Aug 18.

Abstract

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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biodegradation, Environmental
  • Bioelectric Energy Sources*
  • Bioengineering
  • Biological Oxygen Demand Analysis
  • Electricity
  • Electrodes
  • Refuse Disposal
  • Titanium
  • Waste Disposal, Fluid / methods*

Substances

  • titanium dioxide
  • Titanium