Reverse Osmosis
Reverse osmosis is the process by which water or another medium tends
to flow across a membrane in the direction opposite to that for natural
osmosis when subjected to a hydrostatic pressure greater than the
osmotic pressure.
- 1955 Ann. Rep. Saline Water Comm. 1954 (U.S. Dept. Interior) i. 10
- Development of membranes and procedures for demineralization of
saline water by reverse-osmosis methods are provided for in several
contracts.
- 1970 New Scientist 14 May 337/3 - Laboratory experiments have
shown that cheddar cheese whey can be concentrated five-fold by
reverse osmosis, or separated into a high-protein product.
- 1977 Hongkong Standard 14 Apr. 9/6 - Other processes, notably
reverse osmosis (whereby pure water is forced through membranes
under pressure, leaving salts behind) show great longterm promise,
but at present are suitable only for small plants or for purifying
brackish water rather than sea-water.
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