Due to the growing scarcity of freshwater, research into alternative and sustainable methods of water production is becoming increasingly important. One potential source is atmospheric water, particularly in the form of water vapour, which is continuously replenished through the global water cycle. Atmospheric Water Harvesting (AWH) technologies enable the utilization of this resource through various processes, including fog harvesting, water vapuor condensation, and adsorption- or absorption-based systems. In this thesis, an experimental system was developed for the dynamic measurement of water vapour adsorption under controlled temperature and relative humidity conditions. Experimental measurements were used to evaluate the adsorption properties of six different chemical and physical adsorbents and to compare their adsorption capacities and kinetics at different relative humidity levels. The results revealed clear differences in the adsorption capacity and adsorption dynamics of the investigated adsorbents. The adsorption capacity of all tested materials increased with increasing relative humidity; however, significant differences were observed in their adsorption rates and specific water uptake. The selection of a suitable sorption material therefore depends not only on its maximum adsorption capacity, but also on its adsorption dynamics and response to changes in relative humidity, which are important factors in the design of efficient AWH systems. The results provide a useful basis for the further development and selection of sorbents for atmospheric water harvesting systems and highlight the importance of dynamic measurements in evaluating their performance.
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