Sustainable Hypersaline Microbial Fuel Cells: Inexpensive Recyclable Polymer Supports for Carbon Nanotube Conductive Paint Anodes

Matteo Grattieri, Nelson D. Shivel, Iram Sifat, Massimiliano Bestetti, Shelley D. Minteer

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Microbial fuel cells are an emerging technology for wastewater treatment, but to be commercially viable and sustainable, the electrode materials must be inexpensive, recyclable, and reliable. In this study, recyclable polymeric supports were explored for the development of anode electrodes to be applied in single-chamber microbial fuel cells operated in field under hypersaline conditions. The support was covered with a carbon nanotube (CNT) based conductive paint, and biofilms were able to colonize the electrodes. The single-chamber microbial fuel cells with Pt-free cathodes delivered a reproducible power output after 15 days of operation to achieve 12±1 mW m−2 at a current density of 69±7 mA m−2. The decrease of the performance in long-term experiments was mostly related to inorganic precipitates on the cathode electrode and did not affect the performance of the anode, as shown by experiments in which the cathode was replaced and the fuel cell performance was regenerated. The results of these studies show the feasibility of polymeric supports coated with CNT-based paint for microbial fuel cell applications.

Original languageEnglish
Pages (from-to)2053-2058
Number of pages6
JournalChemSusChem
Volume10
Issue number9
DOIs
Publication statusPublished - 9 May 2017
Externally publishedYes

Keywords

  • carbon nanotubes
  • conductive paints
  • hypersalinity
  • microbial fuel cells
  • wastewater

ASJC Scopus subject areas

  • Environmental Chemistry
  • Chemical Engineering(all)
  • Materials Science(all)
  • Energy(all)

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