Despite the process used to obtain bioethanol, a diluted stream
of bioethanol is obtained (around 10% wt. of ethanol) and fed to a
process separation in order to recover the bioethanol [1]. Several
methods have been used to obtain high purity bioethanol, usually a
first conventional distillation column is used to remove the water
as bottoms product and the distillate contains most of the
bioethanol