Chromatographic simulation of stationary phase concentration

Dear All,

I am using CADET for simulation of chromatography process and I have a question I would like to ask, assuming unit_001 is a chromatography column and I am using SMA adsorption model, I can get the concentration of components of the mobile phase at the outlet of the chromatography column ‘model.root.output.solution.unit_001.solution_outlet’. Can I get the component adsorption concentration (stationary phase concentration) q at each discrete point on the column?

If anyone could give me some advice, I would greatly appreciate it!

You can get them by setting WRITE_COORDINATES, WRITE_SOLUTION_SOLID in the return group to true. The data structure of the coordinates and q depends on the column model you are using. For more info you can refer to the document.

If you are using GRM, q = q(t,z,r). CADET will output q as an array with shape (N_t , N_z, N_r) where N_t, N_z and N_z are the time, axial and radial number of cells. The actual t is the user-defined time. The actual z and r can also be obtained from the output group, from which you can construct the entire solution inside the column at any time point.

Hope this helps,


Hi Flynn,

Thanks for your answers. Now the adsorption concentration is successfully returned!