Elemental Chromatography Modeling Using CADET?

Chromatography Modeling
4

Hi,
In a packed column, there are several contributions to the total porosity \epsilon_{total} of the bed. First, the bed itself has free volume because there is space between particles. We call this the column porosity or bed porosity \epsilon_{column}. Moreover, the particles themselves have pores (this is, in fact, where usually all adsorption processes take place). This is the particle porosity \epsilon_{particle}
The overall or total porosity is then defined as:

\epsilon_{total} = \epsilon_{column} + (1- \epsilon_{column}) \cdot \epsilon_{particle}

Depending on the model, you either have to specify both the bed/column porosity AND the particle porosity or just a total porosity (in case of the lumped rate model without pores).

Also, in the interface, it should also return “particle porosity” when you hover over it. @w.heymann, could you maybe update this in the interface?

Hope that helps.