NOVELTY - Obtaining water from atmospheric air with a device for recovering water from atmospheric air, comprises providing a fluid sorbent for sorption of water, preferably a brine solution with a hygroscopic salt, at least along a sorption path, preferably at a guidance element for channelizing the sorbent; and providing at least a metering device with a feed inlet for dispensing the sorbent to the guidance element and with at least a pressure generating unit, for the subjection of the fluid sorbent that is arranged in a sorbent buffer to pressure, in which biomass e.g. food are produced.    USE - The method is useful for the production of water, which is useful for the production of biomass, such as e.g. food and/or energy crops or the like. The carbonaceous intermediate product and/or a water-containing liquid that are obtained from the hydrothermal treatment of the biomass are useful as humus, coal, preferably as lignite and/or low-grade anthracite, petrol and/or diesel or as a solid and/or liquid soil fertilizer (all claimed).    ADVANTAGE - The method not only improves the supply of drinking water to humans, animals and/or plants, but also ensures a permanent and eco-friendly supply of sufficient food and/or energy.    DETAILED DESCRIPTION - Obtaining water from atmospheric air with a device for recovering water from atmospheric air, comprises providing a fluid sorbent for sorption of water, preferably a brine solution with a hygroscopic salt, at least along a sorption path, preferably at a guidance element for channelizing the sorbent and providing at least a metering device with a feed inlet for dispensing the sorbent to the guidance element and with at least a pressure generating unit, for the subjection of the fluid sorbent that is arranged in a sorbent buffer to pressure, in which biomass, such as e.g. food and/or energy crops or the like are produced with the water that is obtained from the atmospheric air; and then treating the produced biomass and/or the biomass components with the help of a hydrothermal carbonation unit for the hydrothermal treatment of the biomass to produce at least a carbonaceous intermediate product and/or a water-containing liquid; and then using the intermediate product and/or the water-containing liquid for the production of other biomass and/or for the generation of energy, preferably electrical energy and/or heat energy and/or liquefaction of coal and/or the fertilization of soils.