โ Scribed by G. Bunke; D. Gelbin
No coin nor oath required. For personal study only.
Usmg numerical procedures, breakthrough curves are calculated as a function of one diffuslonal and one equlllbnum parameter for systems obeying equlllbnum isotherms concave to the gas concentration axls For purposes of demonstration the Langmuu isotherm 1s chosen The unfavorable effects of an increasingly concave isotherm m the cychc steady state are the opposite of the "favorable"effects found by authors who mvestlgated the first adsorptlon penod or who assumed that total desorption IS posstble m the regeneration phase These conclusrons apply wtthm the range of kmetlc parameters studled The results of technologcal changes, such as usmg countercurrent desorptlon, varying total cycle time or mcreasmg the ratlo of desorptlon to adsorptlon time are shown
๐ SIMILAR VOLUMES
Using numerical simulation, moments of breakthrough curves for systems obeying the Langmuir isotherm have been calculated. Tbe breaklhrough curves were observed to fall into three regions. In relatively short columns there is quasi-kinetic behaviour: as the retention time of the breakthrough curve i
Using an equilibrium dynamics model and one taking into account internal diffusion resistance, the separation efficiency is calculated for systems obeying the Langmuir isotherm in periodic countercurrent adsorption. The equilibrium and kinetic parameters, the cycle time and the number of columns are