Pathway | Ethanol feedstock | Process fuel supply | Vinasse fertigation | CHPafeedstock | Co-product | Co-product handling methods |
---|---|---|---|---|---|---|
I | Grain, GS | FNG, electricity | Â | None | WDGSb | Displacement |
II | Grain, GS | RNGc from ADd of animal waste | Â | RNG | WDGS | Displacement |
III(a) | Sugar, SS | Steam and electricity from CHP facilities | No | Sorghum bagasse | Grain and electricity | Displacement for grain (animal feed), energy-based allocation for electricitye |
III(b) | Sugar, SS | Steam and electricity from CHP facilities | Yes | Sorghum bagasse | Grain, vinasse and electricity | Displacement for grain (animal feed) and vinasse (fertilizer), energy-based allocation for electricity |
IV | Cellulosic biomass, FS | Steam and electricity from CHP facilities | Â | Lignin residue and a portion of cellulosic biomass | Electricity | Energy-based allocation |
V(a) | Sugar and bagasse, SS | Steam and electricity from CHP facilities | No | Lignin residue and a portion of the bagasse | Grain and electricity | Displacement for grain (animal feed) and energy-based allocation for electricity |
V(b) | Sugar and bagasse, SS | Steam and electricity from CHP facilities | Yes | Lignin residue and a portion of the bagasse and | Grain, vinasse and electricity | Displacement for grain (animal feed) and vinasse (fertilizer) and energy-based allocation for electricity |