The composition of a stream leaving a fermenter is 85.0 mol % water (H2O, MW = 18.01), 10.0 mole % ethanol (C2H5OH, MW = 46.07), and 5.0 mol % sucrose (C6H12O6, MW =180.16).
a) Calculate the stream composition weight %.
b) 850 lbm/h of the stream is fed to a purification process. 95% of the ethanol is recovered as product. Calculate the tons/year of recovered ethanol.