NOVELTY - The combination device for the separation of liquids and gas from liquid mixtures and for mixing of liquids, comprises housing (90) at which inlets and outlets for the liquid mixture are arranged, and a gas permeable and liquid tight membrane (115), which is connected to the device. The device consists of individual surfaces, which are arranged in such a manner that the surfaces form three-dimensional surface texture of the membrane. The first inlet (120) is arranged for a mixture from fuel, carbon dioxide and water. The second inlet is arranged for a water-air-mixture.    USE - Useful as a liquid separation device and for mixing of fuels and gases in a fuel cells system (claimed) such as direct-methanol fuel system.    ADVANTAGE - The combination device provides effective and energy- and space saving separation and mixing of liquids.    DETAILED DESCRIPTION - The combination device for the separation of liquids and gas from liquid mixtures and for mixing of liquids, comprises housing (90) at which inlets and outlets for the liquid mixture are arranged, and a gas permeable and liquid tight membrane (115), which is connected to the device. The device consists of individual surfaces, which are arranged in such a manner that the surfaces form three-dimensional surface texture of the membrane. The first inlet (120) is arranged for a mixture from fuel, carbon dioxide and water. The second inlet is arranged for a water-air-mixture and for gas mixture from air and carbon dioxide. A connection is intended for the supply of fuel to the housing. The three-dimensional pattern of the membrane is produced by even single surfaces arranged adjacently angular to each other and by undulations of the membrane surface, by a wave shape of the membrane surface and by combination of surface elements. The total-surface of the membrane has pyramid-shaped deformations, and conical deformations. A number of stationary individual surfaces vertical to the total-extension surface are arranged on the total-extension surface of the membrane. The cavities formed by vertical surfaces are connected in single-sided manner by individual surfaces passing parallel to the extension surface. The membrane forms multisides of the housing, is arranged in the housing and is separated into two spaces. The liquid outlet is a rotatable curved tube and a flexible collecting tube arranged in the liquid tight housing. The membrane in the cross-section has a polygonal shape. Holes are formed in the surfaces of the polygonal membrane. The polygonal shape membrane with three surfaces limits on the fuel mixture-carbon dioxide-chamber.    DESCRIPTION OF DRAWING(S) - The drawing shows a combination device for the separation of liquids and gas from liquid mixtures and for mixing of liquids.    Housing (90)    Separation chamber (100)    Side surfaces of combination device (110)    Membrane (115)    First inlet. (120)