Hydrogenotroph

Hydrogenotrophs are organisms that are able to metabolize molecular hydrogen as a source of energy. Hydrogenotrophs are organisms that are able to metabolize molecular hydrogen as a source of energy. An example of hydrogenotrophy is performed by carbon dioxide-reducing organisms which utilize CO2 and H2 to produce methane (CH4) by the following reaction: Other hydrogenotrophic metabolic pathways include acetogenesis, sulfate reduction, and other hydrogen oxidizing bacteria. Those that metabolize methane are called methanogenic.