34 Citations (Scopus)

Abstract

Microbial electrochemistry technologies (METs) take advantage of the connection of microorganisms with electrodes. In the classic case of a microbial anode, the maximization of current density produced is often the goal. But, current production is dependent on many transport processes occurring, which can be rate-limiting. These include the fluxes of electron donor and acceptor, the ionic flux, the acidity and alkalinity fluxes at anode and cathode respectively, the electron transport flux at the biofilm, and the reactant/product crossover flux. Associated with these fluxes are inherent concentration gradients that can affect performance. This critical review provides an analysis on how these transport processes have hindered the development of METs, and how MET designs have evolved as more knowledge of these transport limitations is gained. Finally, suggestions are provided on how to design MET systems taking into consideration critical transport processes that are intimately linked to the current produced.

Original languageEnglish (US)
Pages (from-to)265-273
Number of pages9
JournalBioresource Technology
Volume215
DOIs
StatePublished - Sep 1 2016

Fingerprint

electrochemistry
Electrochemistry
transport process
Fluxes
electron
Anodes
alkalinity
biofilm
acidity
electrode
microorganism
Biofilms
Alkalinity
Acidity
Microorganisms
rate
Cathodes
Current density
Electrodes
Electrons

Keywords

  • Electron transport
  • Ion transport
  • Microbial electrochemistry technologies
  • Microbial fuel cell
  • Proton transport

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Waste Management and Disposal

Cite this

Critical transport rates that limit the performance of microbial electrochemistry technologies. / Popat, Sudeep C.; Torres, Cesar.

In: Bioresource Technology, Vol. 215, 01.09.2016, p. 265-273.

Research output: Contribution to journalArticle

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