what is reverse osmosis? Explain it.
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Reverse osmosis (RO) is a water purification process that uses a partially permeable membrane to remove ions, unwanted molecules and larger particles from drinking water. ... The result is that the solute is retained on the pressurized side of the membrane and the pure solvent is allowed to pass to the other side.
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Reverse osmosis : The phenomenon of the passage of solvent like water under high pressure from the concentrated aqueous solution like sea water into pure water through a semipermeablen membrane isncalled reverse osmosis.
The osmotic pressure of sea water is about 30 atmospheres. Hence when pressure more than 30 atmospheres is applied on the solution side, regular osmosis stops and reverse osmosis starts. Hence pure water from sca water enters the other side of pure water. For this purpose of suitable semipermeable membrane is required which can withstand high pressure conditions over a long period. This method is used successfully in Florida since 1981 producing more than 10 million litres of pure water per day.
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