Photoautotrophic hydrogen production of Rhodobacter sphaeroides in a microbial electrosynthesis cell.

Conventional photoheterotrophic H production by purple sulfur bacteria requires additional organic substrates as the carbon and energy sources. This study examined the novel photoautotrophic H production of Rhodobacter sphaeroides with concomitant CO uptake in microbial electrosynthesis (MES). Under an applied potential of -0.