Dynamics of water sorption on a single adsorbent grain caused by a large pressure jump: modelling of coupled heat and mass transfer.

In the paper, the authors present a mathematical model of coupled heat and mass transfer in the course of water adsorption on a single adsorbent grain, which is in thermal contact with an isothermal metal plate. Adsorption is caused by a large jump of vapour pressure over the grain. The radial profiles of the grain temperature and the water concentrations in the adsorbed and gas phases were calculated as a function of time. Strong interrelationship between the shapes of the water sorption isotherm and the radial uptake profile was revealed. [Reprinted with permission from Elsevier. Copyright, 2008].