Study of ethanol absorption from CO2 fermentation off-gas

What is it about?

Glycols and glycerol can provide easier separation of ethanol than water, with lower distillation energy demand. A statistical experimental design was used to compare the mass transfers of ethanol from the gas phase to the liquid phase, using solutions of glycerol, ethylene glycol, and diethylene glycol.

Featured Image

Why is it important?

As biofuels become more important, extrative fermentation also becomes more relevant. In few years, extretative fermentation will be probably the dominant route to obtain biofuels, and in those cases where the extractive agent is a gas, the absorption will be likely the main route to recover the product of interest.

Perspectives