MODEL DEVELOPMENT FOR DIFFUSION WITH INSTANTANEOUS CHEMICAL-REACTIONSIN A SPHERICAL MULTICOMPONENT DROP

Diffusion accompanied by instantaneous chemical reactions in a multico mponent drop is modeled. The developed model is then simulated for the case of absorption of one solute from a continuous phase into the dro p, followed by fast reactions with two different reactants existing in the drop. The results of the model are obtained by using Galerkin's f inite element method and represented by unsteady concentration profile s of all components in the drop, the reaction front positions, and the cumulative mass Our and the enhancement factor of the diffusing solut e. The effects of the system parameters, such as diffusivities of the solute and the reactants, the relative amount of the reactants in the drop, and the interfacial concentration of the solute, on the calculat ed quantities are evaluated.