NOVELTY - Dewatering mixture of ethanol and water comprises feeding mixture of ethanol and water (1) into evaporator (2), evaporating, feeding stream of vaporized mixture of ethanol and water (3) to vapor recompression unit (4), pressurizing in vapor recompression unit and feeding stream of pressurized vaporized mixture of ethanol and water (5) to membrane unit (6), and dividing stream of pressurized mixture in membrane unit into a stream of mixture of ethanol and water (8) and feeding into a stream of dewatered mixture of ethanol and water (7) and feeding stream of dewatered mixture.    USE - Method of dewatering mixture of ethanol (claimed) used as component in fuel.    ADVANTAGE - The method produces easily processed water free from ethanol (e.g. less than 0.2% ethanol) and reuses dewatered i.e. concentrated mixture of ethanol and water in the evaporator by feeding the concentrated mixture of ethanol and water from the distilling unit to the evaporator.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an apparatus for dewatering mixture of ethanol and water comprising evaporator (2) for receiving mixture of ethanol and water (1) and for evaporating mixture of ethanol and water, first conduit unit (27) for feeding a stream of vaporized mixture of ethanol and water (3) from the evaporator to a vapor recompression unit (4) for pressurizing vaporized mixture of ethanol and water, and second conduit unit (28) for feeding a stream of pressurized vaporized mixture of ethanol and water (5) from the vapor recompression unit to a membrane unit (6) for dividing the stream of pressurized mixture of ethanol and water into a stream of vaporized mixture of ethanol and water (8) and into a stream of dewatered mixture of ethanol and water (7).    DESCRIPTION OF DRAWING(S) - The drawing shows a flow sheet of the dewatering a mixture of ethanol and water.    Feeding mixture of ethanol and water (1)    Evaporator (2)    Feeding stream of vaporized mixture of ethanol and water (3)    Vapor recompression unit (4)    Feeding stream of pressurized vaporized mixture of ethanol and water (5)    Membrane unit (6)    Dewatered mixture of ethanol and water (7)    Stream of mixture of ethanol and water (8)    First conduit unit (27)    Second conduit unit (28)