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Microbial fuel cell (MFC) represents a new method for simultaneously swine wastewater treatment and electricity generation. However, few studies revealed the high electricity generation and pollutant removal using a large-scale single-chambered MFC in treating swine wastewater.

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What they did

System
MFC

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Abstract

Microbial fuel cell (MFC) represents a new method for simultaneously swine wastewater treatment and electricity generation. However, few studies revealed the high electricity generation and pollutant removal using a large-scale single-chambered MFC in treating swine wastewater. Results indicated optimal hydraulic retention time (HRT) of swine wastewater was 8 d considering the removal efficiency and the power density. Under this condition, this MFC system removed 85.62% TCOD and 73.6% NH3 as well as achieved power density of 368 mW/m². Results also showed the maximum power density of the MFC was 382.5±10.6 mW/m² MFC at 350 Ω. TCOD concentration in the swine wastewater was limiting factor for power output. The maximum power density was Pmax= 385 mW/m², with a half-saturation concentration of Ks=2,050 mg/l. To our knowledge, this is the first time to demonstrate the electricity characteristics of a large-scale single-chambered MFC in treating swine wastewater.

Key findings

  • 62% TCOD and 73.
  • 6% NH3 as well as achieved power density of 368 mW/m².
  • Results also showed the maximum power density of the MFC was 382.
  • 6 mW/m² MFC at 350 Ω.
  • The maximum power density was Pmax= 385 mW/m², with a half-saturation concentration of Ks=2,050 mg/l.

Keywords

Microbial fuel cellWastewaterElectricity generationPollutantPower densitySewage treatment

Identifiers

DOI
10.4028/www.scientific.net/amr.953-954.158
Journal
Advanced Materials Research
Year
2014