Lignocellulosic biomass can be converted to ethanol to eliminate the concerns of capacity limitations in feedstock availability, food vs. fuel issues, high cost of feedstock and intensive agricultural inputs for corn growth. However a fermentation feed, prepared from biomass is not concentrated in sugars; as a result a dilute stream of ethanol is transferred to distillation. This introduces a huge cost for ethanol recovery. As a solution, a considerable reduction in production cost can be achieved when ethanol concentration in the feed to the distillation is increased. To achieve this, more...