In regions with a dry or mainly dry climate the production of drinking water is an existential problem. On average, more water evaporates here than is compensated as a result of precipitation. The ground is therefore dried out and the generally salty groundwater is often only found at great depths. Additionally, in many cases the groundwater level is steadily dropping or so-called fossil, non-renewable aquifers are used. A sustainable production of drinking water from groundwater that can also be used for future generations is thus not possible. The use of surface waters is also difficult in these regions, especially at a great distance from the sea. The Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB is working on a new process concept. The entire process consists of two parts. First, the humidity from the air is absorbed by a highly concentrated saline solution (brine) and thus bound. Then this diluted saline solution is distilled and the water separated from the saline solution is condensed as drinking water (desorption).