Some options hold the potential for net emission reductions that exceed 100 percent — meaning that more carbon would be
sequestered during the production process than would be emitted as carbon dioxide during its life cycle — if fertilizer inputs are minimized and biomass or other renewable sources are used for process energy (see Worldwatch Institute, 2007).
The
process captures and
sequesters the carbon dioxide and hydrogen sulfide generated naturally
during biological methane
production, accelerating renewable methane
production rates by 10 percent to 30 percent while sequestering carbon dioxide.