Can you separate salt from sea water in a centrifuge?

Answer 1

Dissolved solids cannot be readily sorted through this technique; some very high molecular weight compounds can be sorted using very high centrifuge speeds- like some sugars- but it is not effective on salts like sodium chloride, or other ions commonly found in seawater.

Distillation is effective, as is solar distillation (reference 1), as is reverse osmosis (reference 2). Better techniques will become available once the price of certain compounds- aerogels and carbon nanotubes- become reasonable, which may take years to become competitive with solar and reverse osmosis techniques.

Answer 2

A centrifuge works by increasing the gravity on a solid that is suspended in a liquid that will eventually settle out over time. Now, if you put a bottle of salt water on a counter for several days, will the salt collect at the bottom or will it still be absorbed in the water.

Answer 3

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Answer 4

You cannot unless there is an excess of any minerals that are not in solution with water. Only way, I guess, boiling the water and the remaining minerals, including salt, will stay in the bottom of the pot.

Answer 5

No. The salt is solvated by the water and it is in its ionic state. You can evaporate the water and get the salt that way.

Answer 6

it seems reasonable that not all water would be at the same exact specific gravity at the same time, and therefore the centrifigal force would be able to act upon the difference. I would have to say, YES!

Answer 7

NO.