... As the adsorption goes on, the adsorbate density of adsorbent surface increased gradually, the adsorption rate is slower and slower ... improve water vapor partial pressure, thus the absorbed moisture of adsorbent completes desorption, then enters next adsorption cycle, desorption and ... can be simply understood as a "tug of war" between adsorbent (alumina) and adsorbate carrier (air). As resurgent and ...