has great potential for optimizing the process. A smaller amount of water would result in a decrease in energy demand for solvent recovery within the organosolv process and
facilitate the use of the C5 fraction in downstream processes. Another significant water stream occurs in the enzymatic hydrolysis with the dilution of cellulose fibers and the washing of
hydrolysis lignin. However, this stream could be reduced by the recirculation of the bottom stream from the CO2 scrubber and lutter water from the ethanol recovery. Due to a high ethanol
recovery rate of more than 99% in the solvent recovery and the recycling of purified ethanol from the ethanol recovery process,