A methanogenic reactor for the production of methane, cellular biomass and other useful products for use in the manufacturing of specialty chemicals. The methanogenic reactor includes a bottom wall, perimeter wall, and top wall defining an interior space environmentally separable from an exterior space outside of the reactor vessel for holding a methanogenic culture and growth media. The reactor also includes at least one sparger positioned substantially within the interior space for facilitating the direction of an input gas stream into the reactor to be brought into contact with the methanogenic culture. The reactor also includes an output material stream port for releasing an output material stream created at least in part by the methanogenic culture.
