This is a radical departure for bacteria. I would not be surprised if it were in another microorganism, not a bacteria, but belonging to its own domain of life, called Archaea, formerly known as “extremophiles”.
While they are microorganisms, they are actually closer to plants and animals (eukaryotes) than they are to bacteria.
http://en.wikipedia.org/wiki/Archaea
“Archaea use more energy sources than eukaryotes: these range from organic compounds such as sugars, to ammonia, metal ions or even hydrogen gas. Salt-tolerant archaea (the Haloarchaea) use sunlight as an energy source, and other species of archaea fix carbon; however, unlike plants and cyanobacteria, no species of archaea does both.”
Not too different from what the mitochondria are doing in your cells. They collect electrons from some chemicals and use those electrons to power the formation of ATP, the fuel that the rest of the cell uses for power. Those electrons end up attached to Oxygen, the electron waste bucket of the body.