Long-term performance of sediment microbial fuel cells with multiple anodes

Qing Zhao, Min Ji, Ruying Li, Zhiyong Jason Ren

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

This study constructed multiple-anode SMFCs with different anode spacing and investigated their long-term performance. Results show that multiple anodes extended electricity generation from SMFCs due to increased anode surface area, but the distance between the anodes showed limited effects on power output. Power generation was seriously inhibited when temperature was below 20 °C, but system recovered once temperature rose based to ambient condition. The degradation of readily oxidizable organic matter (ROOM) and decomposition of refractory organics occurred simultaneously. Worms’ growth in the sediment destabilized power output, caused the increase of COD and decrease of pH and DO in water layer, and affected the microbial communities in sediments. ANME-2D related to anaerobic oxidation of methane was enriched around anodes and might benefit electron transfer in SMFCs.

Original languageEnglish (US)
Pages (from-to)178-185
Number of pages8
JournalBioresource Technology
Volume237
DOIs
StatePublished - Jan 1 2017
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

Keywords

  • Ambient temperature
  • Anode distance
  • High-throughput sequencing
  • Multiple-anode sediment microbial fuel cell
  • Worms’ growth

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