Electron Storage in Electroactive Biofilms

A. ter Heijne*, M.A. Pereira, J. Pereira, T. Sleutels

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review


Microbial electrochemical technologies (METs) are promising for sustainable applications. Recently, electron storage during intermittent operation of electroactive biofilms (EABs) has been shown to play an important role in power output and electron efficiencies. Insights into electron storage mechanisms, and the conditions under which these occur, are essential to improve microbial electrochemical conversions and to optimize biotechnological processes. Here, we discuss the two main mechanisms for electron storage in EABs: storage in the form of reduced redox active components in the electron transport chain and in the form of polymers. We review electron storage in EABs and in other microorganisms and will discuss how the mechanisms of electron storage can be influenced.

Original languageEnglish
Number of pages9
JournalTrends in Biotechnology
Publication statusE-pub ahead of print - 6 Jul 2020


  • electroactive biofilms
  • electron storage
  • microbial electrochemical technologies
  • polymers

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