Nitrogen rejection from natural gas using membranes... Help

[g3fighter]

Hello, new to this forum.

I am really struggling at the moment trying to find out how to carry out a mass balance for a membrane separator.... I have been searching for literally ever and cannot find out how... I would be very grateful if someone could help me or guide me as to how to go about it....

Thankyou very much

[mobek]

Is this an academic or industrial/commercial task?

[g3fighter]

This is an academic task...

[mobek]

You should find a text book on membrane separation such as Inorganic Membranes For Separation And Reaction BY Hsieh H P. Normally separation follows certain kinetic/emperical equation(s) for each chemical species and that's specific for the mmbrane material itself and at specific operating conditions.