Von Smoluchowski Classical Treatment

This applies to the case where the particle radius R is much larger than the double layer thickness (1/k), i.e. kR 1. This generally applies to particles that are greater 

57) applies for small particles ( 100 nm) and thick double layers (low electrolyte concentration). 

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Von Smoluchowski (Classical] Treatment The von Smoluchowsld treatment [16] applies to the case where the particle radius R is much larger than the double layer thickness (l/jc), that is 1. This generally apphes to particles that are greater than 0.5 mp (when the 1 1 electrolyte concentration is lower than 10 moldm , that is R> 10),... 

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