What process is used to get pure water from salt water?

Answer 1

There are three popular ways to produce drinking water from salt water.These are vapor distillation, freeze distillation and reverse osmosis. The vapor distillation method is pretty familiar to people who have watched a kettle boil.The vapor from the spout, the 'steam', if cooled, produces considerably fresher water than the source. If the process is repeated, the output is purified. Freeze distillation is interesting. As a pan of water begins to freeze, the first water to freeze 'pushes out' the impurities which are concentrated into an impure liquid which freezes last, usually. If the first frozen ice is rechilled, the output is purified. The reverse osmosis method is rather like a microscopic filter membrane. Salt water under high pressure allows water molecules to squeeze through, while larger salt molecules are held back.

Answer 2

The process used to get pure water from salt water is called desalination. This can be achieved through methods such as distillation, which involves heating the salt water to create steam and then condensing the steam back into water, leaving the salt behind. Another method is reverse osmosis, where pressure is used to push salt water through a membrane that filters out the salt, leaving pure water.

Answer 3

To obtain pure water you would use evaporation/condensation processes or reverse osmosis.

To obtain salt you would use evaporation processes.

Answer 4

Distillation