General concepts for the development of a model

The process of co-deposition of particles consists of two consecutive reactions  

After adsorption the adhesion forces between particle and surface will keep the particle adsorbed on the surface until hydrodynamic forces or thermal motion are strong enough to overcome the adsorption barrier. This can be described by the equation 

The reciprocal value of the rate constant of separation can be defined as the residence time 

At equilibrium and a Langmuir type of adsorption, isotherm is obtained. 

Proportionality between surface density and electrolyte can be formulated for small 

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