Dewatering denotes moisture removal from materials and it is a more general term than drying. In dehydration and drying technology, a growing role of modern techniques used either separately or in hybrid solutions is observed. Membrane techniques find many industrial applications in this field. Based on available literature, examples of dehydration on membranes, important from the viewpoint of energy saving, environmental protection, and recoverable energy sources, are presented in this study. Special attention is given to the process of pervaporation as the most modern and promising technique for azeotropic mixture separation to be used in dehydration of solvents, including alcohols, and removal of volatile organic compounds from sewage, concentration of aromas, and separation of multicomponent systems.
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