Zhao, H. ， Zhang, B. ， Gao, Y. ， Zhang, F. ， Sun, Y.
2023-05-01 INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY 2023 20(卷), 5(期), (5585-5596页)
Facing the increasing shortage of fresh water resources in desert and arid areas, the adsorption water extraction method with adsorbent as water vapor carrier has attracted extensive attention of scholars. Although a large number of adsorbents for adsorption water intake method have been studied, it is still of practical significance to develop a simple and low-cost composite adsorbent for water intake process. A new composite adsorbent (activated carbon/calcium chloride) was synthesized by grinding with calcium chloride and activated carbon as raw materials. The micro-morphology of the composite adsorbent was observed by scanning electron microscope, and the water vapor adsorption and desorption properties of the composite adsorbent under different working conditions were measured. In addition, the adsorption kinetics and hydrothermal stability of the composite adsorbent were tested under specific working conditions. The experimental results show that the composite adsorbent shows good adsorption and desorption performance and good hydrothermal stability at low relative humidity. Therefore, the new composite adsorbent (activated carbon/calcium chloride) is expected to be applied in the adsorption water intake system.