Journal or Book Title
Biofuels, Bioproducts and Biorefining
The goal of this paper is to evaluate the economic performance of co-located corn grain ethanol (Gen 1) and cellulosic ethanol (Gen 2) facilities. We present six scenarios to evaluate the impact of stover-to-grain mass (SGM) ratios on overall minimum ethanol selling price (MESP). For the Gen 1 plant, MESP is $3.18/ gasoline gallon equivalent (GGE) while for the Gen 2 plant it is $5.64/GGE. Co-located Gen 1 and Gen 2 plants operating at the lowest SGM ratio of 0.4 generates the lowest overall MESP of $3.73/GGE as well as the highest MESP for cellulosic ethanol of $7.85/GGE. Co-located plants operating at the highest SGM ratio of 1.0 achieve the highest overall MESP of $3.94/GGE as well as the lowest MESP for cellulosic ethanol of $5.47/GGE. Sensitivity analysis shows that the prices of feedstocks have the greatest impact on the overall MESP.
Ou, Longwen; Brown, Tristan; Thilakaratne, Rajeeva; Hu, Guiping; and Brown, Robert C., "Techno-economic Analysis of Co-located Corn Grain and Corn Stover Ethanol Plants" (2014). Industrial and Manufacturing Systems Engineering Publications. 63.