Can salt water be desalted by freezing?

Question

I know it can, I just need more info about it. Got a Science project...help!!

Answer 1

Yes. You need to be able to slowly freeze the fluid so the ice can rise to the surface, and remove the slush. The salt becomes concentrated in the water, so it needs to be removed periodically.

Answer 2

YES ! Desalination was originally done by distillation. In the 70's, when the cost of energy went up radically, plants were built to desalinate by freezing, the attraction being that far less energy was used per ton of fresh water. Ocean water is frozen to a slush, the ice being pure water, and the liquid being saltier than the original ocean water as all the salt is in it. THe ice is filtered from the salty water, rinsed with a little fresh water, then melted. However, just as this technology was being commercialized, reverse osmosis came in, which uses even less energy, and effectively killed freeze desalination.

Answer 3

Yes, you must be active in collecting the ice pieces and have a quick wash with water to remove the salty water on surface of ice

Answer 4

Skim the crystals while it is partially frozen. The early crystals are pure water (in a salt water bath).

Answer 5

no.
it can be desalinated by boiling and trapping the water vapor, leaving the salt residue behind.

Answer 6

It may be possible but for a science question the answer would be no.

Answer 7

sea water will freeze when it gets below 28degrees Fahrenheit,but I've never licked it so I don't know

Answer 8

no it cant, it can only be desalted by evaporation

Answer 9

No

Answer 10

No