During the conversion of acetic acid to ethanol multiple distillation steps are required to produce ethanol that is 99.5% by
mass.
Process yields for AP are obtained from Verser and Eggeman.
As in the ethanologen pathway, lignin and unreacted carbohydrates are combusted to produce process steam and electricity.
Total electricity produced is 38 MW of power.
The biorefinery consumes 29 MW, leaving 9 MW to displace marginal electricity production.
AP biorefinery process parameters, major chemical demands, and emissions are listed in Table 4.
For a complete list of chemical demands see thesupplementary material.