Abstract
In order to be economically feasible, current and envisioned 2G biofuel production processess feature solids loading between about 15 to 20 wt.% on a dry basis, corresponding to ethanol titers of 5 to 7 wt.% (Lynd et al., 2002). The upper end of this range is constrained by the high viscosity of unreacted lignocellulose slurries, and associated solids delivery and mixing challenges. The l…