High-efficiency dry reforming of biomethane directly using pulsed electric discharge at ambient condition

Biomethane is produced by the fermentation of biomass-derived organic waste, such as waste from stock breeding. From the viewpoint of better energy use, biomethane, which is a kind of biomass, is an efficient energy source. Biomethane contains about 40% carbon dioxide, 60% methane, and highly concentrated hydrogen sulfide (H 2 S) [a few thousand parts per million (ppm)]. Existing processes for biomethane use involve predesulfurization and CO 2 separation because of the high concentrations of H 2 S and CO 2 in biomethane. Dry reforming of biomethane (eq 1) is a promising process for using biomethane; however, catalytic reforming requires the removal of impurities, such as H 2 S to prevent deactivation of the catalyst.