Electrochimica Acta, Volume 158, 2015, Pages 356-360.
Pablo Ledezma1, Bogdan C. Donose2, Stefano Freguia1,2, Jurg Keller1
- Advanced Water Management Centre, The University of Queensland, Brisbane QLD 4072, Australia.
- Centre for Microbial Electrosynthesis, The University of Queensland, Brisbane QLD 4072, Australia.
Bioelectrochemical systems (BES) are gaining momentum as biotechnological alternatives for self-powered wastewater treatment and the recovery of valuable products from waste. However, there is a strong need to reduce system costs and therefore some types of stainless steel (SS) electrodes have been proposed as an alternative to carbonaceous electrode materials, but their corrosion remains a strong concern. We hereby demonstrate that a facile SS modification results in up to 45.367 mA cm−3 current production at room temperature – the highest volumetric current density reported to date for BES bioanodes–but that this benefit comes at a high risk of corrosion, which compromises the applicability of SS-based Microbial Fuel Cells.