Abstract The Smoluchowski’s coagulation rate coefficient (kc-S) has been used for decades notwithstanding its predictions are not always consistent with experimental data. In this work, kc-S and Herrera-Ordonez (kc-HO) models,… Click to show full abstract
Abstract The Smoluchowski’s coagulation rate coefficient (kc-S) has been used for decades notwithstanding its predictions are not always consistent with experimental data. In this work, kc-S and Herrera-Ordonez (kc-HO) models, were modified and combined to obtain a hybrid equation kc-h for the rate coefficient of rapid coagulation. Modification of kc-S consisted in adapting the concepts of diffusion-reaction, such as effectiveness factor F, to the case of particle coagulation which is considered a pseudo-reaction. Unlike the deterministic and stochastic approaches, the hybrid model kc-h can fit experimental data for the effects of size and concentration of particles, on kc, using only one adjustable parameter value for all particle sizes. The higher predictability of kc-h suggests that their assumptions are more realistic. The behavior of F indicates that the fusion of relatively large particles is more effective than that of small particles to produce the sink effect.
               
Click one of the above tabs to view related content.