Bioethanol is used in the fuel mixture to the vehicle must be anhydrous so as not to cause corrosion in the engine, so that bioethanol should have a grade of 99% -100%. One of the main problems in the process of making bioetanol is the process of separation water with ethanol to get ethanol dry ( 99,95 % ). Purification of ethanol is usually done by distillation, but the distillation process ha…