Please, find some literature on the work that has been done using membrane filtration in organic solvents.

1. Cuperus, F.P., Van Gemert, R.W., Derksen, J.T.P., 1995. Membranes used for solvent recovery in the oleochemical industry. Proceedings 7th Annual NAMS Meeting, Portland, USA, Publ.Bend Res. Oregon. chapter 7.
2. Cuperus, F.P. R.W. van Gemert, J.T.P. Derksen, Recovery of extraction solvents using membrane technology. Emerging technologies, current practises, quality control, technology transfer and environmental issues. Proc. World conferences on oil and oilseed processing vol. 2, 1998. Koseoglu, S.S., Rhee, K.C., Wilson, R.F., p.95
3. Cuperus, F.P., Membrane processes in agro-food: state-of-the-art and new opportunities Sep. and Pur Technology 14 (1998) 233-239
4. H.Zwijnenberg, K-V Peinemann, K. Ebert, F.P. Cuperus. Acetone-Stable Nanofiltration Membranes in Deacidifying Vegetable Oil. JAOCS 76 (1) 83-87 (1999)
5. Ebert, K, Cuperus, F.P. Solvent resistant nanofiltration membranes in edible oil processing, Membrane Technology 107 (1999) 5-8
6. R.M. Gould, L.S. White, and C.R. Wildemuth, "Membrane separation in solvent lube dewaxing", Environmental Progress, 20 No. 1 (2001) 12-16.
7. U. Kragl, C. Dreisbach and C. Wandrey in Applied homogeneous catalysis with organometallic compounds, B. Cornils, W.A. Hermann, eds, VCH, Weinheim, 1996, p. 832 and references herein.
8. N.Ochoa, Ultrafiltration of vegetable oils: degumming by polymeric membranes, Sep. Pur.Technology 22-23-(2001)417-422
9. G.H. Koops, S. Yamada, S.-I. Nakao, “Separation of Linear Hydrocarbons and Carboxylic Acids from Ethanol and Hexane Solutions by Reverse Osmosis”, J. Membrane. Sci. 189 (2001), 241-254.
10. Non-aqueous applications of NF, FP.Cuperus, K. Ebert. Chapter in Nanofiltration-principles and applications, Elsevier 2005