CONSTANT-PATTERN ADSORPTION FRONTS WITH MASS-TRANSFER RESISTANCES IN BOTH SOLID AND FLUID FILMS

The shape and width of constant-pattern adsorption fronts can be predi cted by relatively simple graphical/numerical methods analogous to met hods used for analyzing concentration profiles in countercurrent extra ction or adsorption systems when there is significant mass transfer re sistance in both the fluid and solid film. This paper presents an exte nsion of procedures described by the author for predicting constant-pa ttern fronts with film resistance in only one phase. The procedure is illustrated for systems with Langmuir isotherms, and the results are s hown in a series of dimensionless figures that cover a wide range of e quilibrium conditions and mass transfer coefficients.