Solvent Extraction and Recovery of Ethanol from Aqueous Solutions1T he distribution coefficients of ethanol and water from aqueous solutions to various organic solvents were measured, and separation factors were calculated. Several solvents had ethanol distribution coefficients greater than 0.1 and separation factors for ethanol/water greater than 10. The ethanol was stripped from selected solvents into a carrier gas and recovered by condensation. A conceptual processing scheme is proposed for separating and recovering ethanol from aqueous solutions by solvent extraction followed by gas stripping.

the Best Tests on the Stripping Column design conditions calcd results feed: flow rate = 1 mol/s temp = 75 "C composition: XW = 0.22, XE = 0.28, XEH = 0.5 stripping gas: min flow rate = 5 mol/h flow rate = 25 mol/h temp = 75 O C composition: Ar

This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of the ir employees , makes any warranty , express or implied , or assumes any legal liab ility or respons ibi lity for the accuracy, completeness, or usefu lness of any information , apparatus , product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product , process , or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its ondorcomont, rocommondnt ion , or favor ing b~• thoU nitod Stntoc Government or any agency thereof. The views and op inions of authors expressed herein do not necessarily state or reflect those of the United States Government or an y agency thereof.