Preparation, Morphology, and Transport Properties of Composite Reverse Osmosis Membranes for Seawater Desalination
The modified cellulose acetate membrane, first prepared by Loeb and Sourirajan  in the 1960s, is clearly the starting point of the modern reverse osmosis process. Development of the thin-film composite membrane began after it was shown by electron microscopy that the asymmetric cellulose acetate membrane is a two-layered structure consisting of a thin, dense semipermeable barrier, about 2000 Å thick, supported by a finely porous substructure [2–4]. Because the membrane is effectively very thin, high water fluxes are attained.
KeywordsCellulose Acetate Reverse Osmosis Composite Membrane Surface Porosity Reverse Osmosis Membrane
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- 1.S. Loeb and S. Sourirajan, Advan. Chem. Series, 38, 117 (1963).Google Scholar
- 3.R. L. Riley, H. K. Lonsdale, L. D. LaGrange, and C. R. Lyons, Office of Saline Water Research and Development Progress Report No. 386, U. S. Government Printing Office, Washington, D. C., May 1968.Google Scholar
- 5.U. Merten, (Ed.), Desalination by Reverse Osmosis, M.I.T. Press, Cambridge, Massachusetts, 1966.Google Scholar
- 7.R. L. Riley, H. K. Lonsdale, and C. R. Lyons, in Proceedings of the 3rd International Symposium on Fresh Water from the Sea, Dubrovnik, Yugoslavia, September 13–16, 1970, Vol. 2, p. 551Google Scholar
- 8.H. K. Lonsdale, R. L. Riley, C. E. Milstead, L. D. LaGrange, A. S. Douglas, and S. B. Sachs, Office of Saline Water Research and Development Report No. 577, U. S. Government Printing Office, Washington, D. C., Oct. 1970.Google Scholar
- 10.A. Goetz, U. S. Patent 2,926, 104 (1960).Google Scholar
- 11.R. Zsigmondy, Z. Angew. Chem., 30, 398 (1926).Google Scholar
- 13.V. G. Levich, Physicochemical Hydrodynamics, Prentice Hall, Englewood Cliffs, New Jersey, 1962.Google Scholar
- 14.H. K. Lonsdale, R. L. Riley, C. R. Lyons, and D. P. Carosella, Jr., “Transport in Composite Reverse Osmosis Membranes,” Chapter 6 in Membrane Processes In Industry and Biomedicine, M. Bier (Ed.), Plenum Press, New York 1971.Google Scholar