Implement Ultrafiltration module

[schmoelder]

Ultrafiltration is commonly used in downstream processing.

see also https://doi.org/10.1016/j.cesx.2019.100025

[sleweke]

Can we collect the equations to be implemented here? This way, it is easier for someone who wants to actually do it.

[lieres]

Like in chromatography, we should implement a filtration model family with many different options. Pirrung et al. (2019) present a basic setup (see original post).

[ht-tran]

Hello,
Do you still have any plans to implement an ultrafiltration module?

[lieres]

Absolutely. Are you interested in collaborating on that subject? Which model equations are you looking for?