Hypersaline microbial fuel cell equipped with an oxygen-reducing microbial cathode

Microbial anodes and oxygen reducing microbial cathodes were designed separately under constant polarization at + 0.1 V/SCE in a hypersaline medium (NaCl 45 g/L). They then associated to design two-compartment fuel cells (MFCs). These MFCs produced up 209 ± 24 mW m?2 during week. This was the first demonstration that equipped with can produce power density this level. Desulfuromonas sp. confirmed be key species of anodes. The efficiency linked development redox system centred 0.2 presence Gammaproteobacteria (Alteromonadales Oceanospirillales), especially an unclassified order phylogenetically genus Thioalobacter. Comparing different performance four population analyses suggested should maintained longer promote growth Thioalobacter on cathode thus increase MFC performance.