Combination of a novel electrode material and artificial mediators to enhance power generation in an MFC

Water Sci Technol. 2015;71(3):320-8. doi: 10.2166/wst.2014.487.

Abstract

This study focuses on two main aspects: developing a novel cost-effective electrode material and power production from domestic wastewater using three different mediators. Methylene blue (MB), neutral red (NR) and 2-hydroxy-1,4-naphthoquinone (HNQ) were selected as electrode mediators with different concentrations. A tin-coated copper mesh electrode was tested as anode electrode. Maximum power density of the microbial fuel cell (MFC) with 300 μM MB was 636 mW/m². Optimal mediator concentrations with respect to the achieved maximum power output for MB, NR and HNQ were 300 μM, 200 μM and 50 μM, respectively. The results demonstrate that tin-coated copper mesh showed a higher biocompatibility and electrical conductivity.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bioelectric Energy Sources*
  • Electrodes
  • Methylene Blue / chemistry*
  • Naphthoquinones / chemistry*

Substances

  • Naphthoquinones
  • Methylene Blue
  • lawsone