Figure 2

Pulp, precipitated lignin, and mass loss after pretreatment of OPEFB with 80 wt% [DMBA][HSO₄] and 20 wt% water at a 1:10 biomass-to-solvent ratio under different conditions. The mass loss is the matter that dissolved in the IL that could not be recovered. Error bars are standard deviations of triplicate samples.