yi, xi, wi	the component mass fraction [g ∙ g−1]
Ji	component mass permeate flux [kg ∙ m−2 ∙ h−1]
l	membrane selective layer thickness [cm]
Mi	molar mass of the component [kg ∙ mol−1]
Pi	permeability coefficient [Barrer]
Si	solubility coefficient [cm3 ∙ cm−3 ∙ cm Hg−1)]
αi/j	separation factor alcohol/water [-]
ni	amount of substance [mol]
mi	mass of component [g]
Vi	volume of component [cm3]
ρi	density of component [g/m3]
BuOH	n-butanol
PrOH	n-propanol
EtOH	ethanol
W	water