Finally, in all experiments the flux values obtained (5 g m2 h1)
were inferior to those described in the literature, such as those
mentioned in work by Molina et al. (2002), who obtained
500 g m2 h1 at a concentration of 15% (wt) under similar operating
conditions. This discrepancy indicates the need for optimization
of the operating conditions. However, the values obtained here are
consistent with the data provided by the membrane supplier. In this
regard, the results are considered to be encouraging because the
parameters show substantial increases in the recovery of ethanol
produced by fermentation using pervaporation compared with
using the standard mixture.