Electricity generation from swine wastewater using microbial fuel cells

Booki Min, Jung Rae Kim, Sang Eun Oh, John Ragan, Bruce Ernest Logan

Research output: Contribution to journalArticle

574 Citations (Scopus)

Abstract

Microbial fuel cells (MFCs) represent a new method for treating animal wastewaters and simultaneously producing electricity. Preliminary tests using a two-chambered MFC with an aqueous cathode indicated that electricity could be generated from swine wastewater containing 8320±190 mg/L of soluble chemical oxygen demand (SCOD) (maximum power density of 45 mW/m2). More extensive tests with a single-chambered air cathode MFC produced a maximum power density with the animal wastewater of 261 mW/m2 (200 Ω resistor), which was 79% larger than that previously obtained with the same system using domestic wastewater (146±8 mW/m2) due to the higher concentration of organic matter in the swine wastewater. Power generation as a function of substrate concentration was modeled according to saturation kinetics, with a maximum power density of Pmax=225mW/m2 (fixed 1000 Ω resistor) and half-saturation concentration of Ks=1512mg/L (total COD). Ammonia was removed from 198±1 to 34±1 mg/L (83% removal). In order to try to increase power output and overall treatment efficiency, diluted (1:10) wastewater was sonicated and autoclaved. This pretreated wastewater generated 16% more power after treatment (110±4 mW/m2) than before treatment (96±4 mW/m2). SCOD removal was increased from 88% to 92% by stirring diluted wastewater, although power output slightly decreased. These results demonstrate that animal wastewaters such as this swine wastewater can be used for power generation in MFCs while at the same time achieving wastewater treatment.

Original languageEnglish (US)
Pages (from-to)4961-4968
Number of pages8
JournalWater Research
Volume39
Issue number20
DOIs
StatePublished - Dec 1 2005

Fingerprint

Microbial fuel cells
electricity generation
fuel cell
Wastewater
Electricity
wastewater
Animals
Chemical oxygen demand
power generation
chemical oxygen demand
Resistors
Power generation
animal
electricity
Cathodes
saturation
Wastewater treatment
Biological materials
Ammonia
ammonia

All Science Journal Classification (ASJC) codes

  • Ecological Modeling
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution

Cite this

Min, Booki ; Kim, Jung Rae ; Oh, Sang Eun ; Ragan, John ; Logan, Bruce Ernest. / Electricity generation from swine wastewater using microbial fuel cells. In: Water Research. 2005 ; Vol. 39, No. 20. pp. 4961-4968.
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Electricity generation from swine wastewater using microbial fuel cells. / Min, Booki; Kim, Jung Rae; Oh, Sang Eun; Ragan, John; Logan, Bruce Ernest.

In: Water Research, Vol. 39, No. 20, 01.12.2005, p. 4961-4968.

Research output: Contribution to journalArticle

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AU - Min, Booki

AU - Kim, Jung Rae

AU - Oh, Sang Eun

AU - Ragan, John

AU - Logan, Bruce Ernest

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