Organic content influences sediment microbial fuel cell performance and community structure

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

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

This study constructed sediment microbial fuel cells (SMFCs) with different organic loadings without the amendment of external substrates, and it investigated how such variation affects electricity generation and microbial community structure. Results found sediment characteristics significantly influenced SMFC performance and appropriate organic content is important to maintain stable power outputs. SMFCs with loss of ignition (LOI) of 5% showed the most reliable performance in this study, while high organic content (LOI 10–16%) led to higher but very unstable voltage output because of biogas accumulation and worm activities. SMFCs with low organic content (1–3%) showed low power output. Different bacterial communities were found in SMFCs shown various power generation performance even those with similar organic contents. Thermodesulfovibrionaceae was found closely related to the system startup and Desulfobulbaceae showed great abundance in SMFCs with high power production.

Original languageEnglish (US)
Pages (from-to)549-556
Number of pages8
JournalBioresource Technology
Volume220
DOIs
StatePublished - Nov 1 2016
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

Keywords

  • Biogas accumulation
  • High-throughput sequencing
  • Microbial community
  • Organic matter content
  • Sediment microbial fuel cell

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