Supported ionic liquid membrane based on [bmim][PF6] can be a promising separator to replace Nafion in microbial fuel cells and improve energy recovery: A comparative process evaluation

László Koók, Barbara Kaufer, Péter Bakonyi, Tamás Rózsenberszki, Isaac Rivera, Germán Buitrón, Katalin Bélafi-Bakó, Nándor Nemestóthy

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

In this study, mixed culture bioelectrochemical systems were operated with various membrane separators: one prepared with 1-Butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF6]) ionic liquid and another one called Nafion, used as reference for comparative evaluation. In the course of experiments, the primary objective was to reveal the influence of membranes-type on microbial fuel cell (MFC) behavior by applying a range of characterization methods. These included cell polarization measurements, monitoring of dehydrogenase enzyme activity and cyclic voltammetry for the analysis of anode biofilm properties and related electron transfer mechanism. Additionally, MFC performances for both membranes were assessed based on Coulombic efficiency as well as substrate (acetate) concentration dependency of energy yields. As a result, it was demonstrated that the ionic liquid-containing membrane could be suitable to compete with Nafion and appears as a candidate to be further investigated for microbial electrochemical applications.

Original languageEnglish
Pages (from-to)215-225
Number of pages11
JournalJournal of Membrane Science
Volume570-571
DOIs
Publication statusPublished - Jan 15 2019

Keywords

  • Cyclic voltammetry
  • Dehydrogenase enzyme activity
  • Ionic liquid
  • Membrane
  • Microbial fuel cell
  • Separator

ASJC Scopus subject areas

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

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