osmosis, reverse

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The passage of water from a more concentrated to a less concentrated solution through a semi-permeable membrane by the application of hydrostatic pressure to overcome the osmotic pressure. Used for desalination of sea water, concentration of fruit juices, and processing of whey. The membranes commonly used are cellulose acetate or polyamide of very small pore size, 10−4–10−3 µm.

Subjects: Medicine and Health.

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