Submersible microbial fuel cell for electricity production from sewage sludge

Yifeng Zhang, Lola Gonzalez Olias, Prawit Kongjan, Irini Angelidaki

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Abstract

A submersible microbial fuel cell (SMFC) was utilized to treatment of sewage sludge and simultaneous generate electricity. Stable power generation (145±5 mW/m2) was produced continuously from raw sewage sludge for 5.5 days. The corresponding total chemical oxygen demand (TCOD) removal efficiency was 78.1±0.2% with initial TCOD of 49.7 g/L. The power generation of SMFC was depended on the sludge concentration. The maximum power density generated from raw sludge reached 190±5 mW/m2. Dilution of the raw sludge resulted in higher power density. The power density was saturated at sludge concentration 17 g-TCOD/L, where maximum power density of 290 mW/m2 was achieved. When effluents from an anaerobic digester were used as substrate in the SMFC a maximum power density of 318 mW/m2, and a final TCOD removal of 71.9±0.2% was achieved. These results have practical implications for development of an effective system to treatment of sewage sludge and simultaneous recover energy.
Original languageEnglish
Title of host publicationThe 12th World Congress on Anaerobic Digestion (AD12). Water Science and Technology : CD-ROM
PublisherIWA - International Water Association
Publication date2010
Publication statusPublished - 2010
Event12th World Congress on Anaerobic Digestion - Guadalajara, Mexico
Duration: 31 Oct 20104 Nov 2010
Conference number: 12
http://www.ad12mexico.unam.mx/

Conference

Conference12th World Congress on Anaerobic Digestion
Number12
CountryMexico
CityGuadalajara
Period31/10/201004/11/2010
Internet address

Keywords

  • Sewage sludge
  • TCOD removal efficiency
  • Submersible microbial fuel cell
  • Anaerobic digestion
  • Electricity generation

Cite this

Zhang, Y., Olias, L. G., Kongjan, P., & Angelidaki, I. (2010). Submersible microbial fuel cell for electricity production from sewage sludge. In The 12th World Congress on Anaerobic Digestion (AD12). Water Science and Technology: CD-ROM IWA - International Water Association.