Abstract
In order to be economically feasible, current and envisioned 2G biofuel production processes feature solids loading between 15 to 20 wt.% on a dry basis, providing ethanol titers of 5 to 7 wt.%. The upper end of this range is constrained by the high viscosity of unreacted lignocellulose slurries, and associated solids delivery and mixing challenges. The lower end of this range is constrai…