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reverse osmosis
nat.res.	osmose réversible
waste.man., ecol., chem.	osmose inverse
reverse osmosis A method of obtaining pure water from water containing a salt, as in desalination. Pure water and the salt water are separated by a semipermeable membrane and the pressure of the salt water is raised above the osmotic pressure, causing water from the brine to pass through the membrane into the pure water. This process requires a pressure of some 25 atmospheres, which makes it difficult to apply on a large scale
environ.	osmose inverse

reverse osmosis: 9 phrases in 3 subjects

Ecology	4
Environment	2
Food industry	3