Microcellular Electrode Material for Microbial Bioelectrochemical Systems Synthesized by Hydrothermal Carbonization of Biomass Derived Precursors

  • Victoria Flexer*
  • , Bogdan C. Donose
  • , Camille Lefebvre
  • , Guillermo Pozo
  • , Matthieu N. Boone
  • , Luc Van Hoorebeke
  • , Mohamed Baccour
  • , Laurent Bonnet
  • , Sylvie Calas-Etienne
  • , Anne Galarneau
  • , Magdalena M. Titirici
  • , Nicolas Brun
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

A new monolithic carbonaceous material, 750-HMF-CarboHIPE, is presented here. The new electrode has been tested as an anode material inside a microbial bioelectrochemical system. In a purposely designed continuous flow bioelectrochemical reactor, the new material showed high biocompatibility, with a continuous biofilm development that remained bioelectrochemically active for over 6 months. A catalytic current of 1.56 mA cm-2/7.8 mA cm-3 (normalization by projected surface area and volumetric current) was reached. The current density was proportional to the flow rate. The new electrode material was synthesized using a high internal phase emulsion (HIPE) as a soft template to confine the polymerization and hydrothermal carbonization of two precursors derived from the cellulosic fraction of biomass and the bark of fruit trees: 5-hydroxymethylfurfural and phloroglucinol, respectively. Altogether, the sustainable synthetic route from biomass materials and the proposed application of oxidizing organic matter present in wastewater to produce electricity in a microbial fuel cell (MFC) close an interesting loop of prospective sustainable technology.

Original languageEnglish
Pages (from-to)2508-2516
Number of pages9
JournalACS Sustainable Chemistry and Engineering
Volume4
Issue number5
DOIs
Publication statusPublished - 2 May 2016
Externally publishedYes

Keywords

  • Microbial bioelectrochemical systems
  • electrochemically active biofilm
  • electrode material
  • microbial fuel cells
  • porous carbons

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