I produce a positively charged membrane and have succesfully reject positively charged ions.
In terms of charge effects, it may sound correct. But so far, only negatively charged membrane are produced to reject co-ions, let say Cl-. And in reverse osmosis, the performance of the membrane is correlated to the percentage rejection of Cl-.
In order to show, that my positively charged membrane could also repel co-ions, I have to calculate the gibbs free energy of the membrane surface and the water surface.
Could anyone please help me?
Much appreciated.
Dear Norfarah,
The following links and attached files may be helpful:
http://www.public.asu.edu/~laserweb/woodbury/classes/chm341/lecture_set6/lecture%20set6.html
http://cbc.arizona.edu/classes/bioc460/summer/460web/lecture/IonTransportProblems.pdf
Hoping this will be helpful,
Rafik
Dear Prof Rafik,
I can't thank you enough for your help...
Thank you and kind regards,
Farah
You have to postulate the surface activated form of the membrane and the composition of the liquid. Then from compositions the Gibbs energy is calculated.
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