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Evaporation would leave the salt (and most other minerals) behind. I suppose there exist devices for re-capturing the condensed (=drinking) water out of sea wa

by Radim 15y ago

Evaporation would leave the salt (and most other minerals) behind. I suppose there exist devices for re-capturing the condensed (=drinking) water out of sea water. I don't know why they're not common; my guess is they're just not economical/too hard on maintenance.

FreeFull 15y ago
The point is that you condense the evaporated water. You can do this more than once to get purer water. One thing though, you'll end up with a significantly smaller amount of water than you started with, so you have to compensate for that.
bch 15y ago
> Evaporation would leave the salt (and most other minerals) That's a good point. I can't say I know the answer, but I've read/heard that drinking this mineral-free water can have long-term adverse health effects (leaches minerals from your body into the mineral free water?). I see articles for/against this theory. Interested to hear comments from anybody who actually knows details. Of course dying from thirst or salt poisoning in a few days versus the long-term prospect of slow mineral loss make the choice a no-brainer in the case of an emergency.
- gnosis 15y ago
  "I've read/heard that drinking this mineral-free water can have long-term adverse health effects (leaches minerals from your body into the mineral free water?). I see articles for/against this theory. Interested to hear comments from anybody who actually knows details." Take a look at: http://www.finishing.com/156/65.shtml http://www.finishing.com/156/65.shtml My favorite quote from that thread: "If it is a concern & all you have to drink is ultrapure water, you can stir the water with a metal stainless spoon or your finger first & it will magically transform itself from ultrapure water to just water."
  - bch 15y ago
    Thanks for the link, but not very convincing. The site itself is a forum for the metal finishing industry; like chrome and silver plating, not something I'd hold up as expert in human health and diet. Most of the discussion oscillates between "Yes it's harmful. If you want to consume DI water that does x, do so at your peril." and "No it's not harmful. Why are you afraid of something we already use for x?"

by Radim 15y ago

FreeFull 15y ago

The point is that you condense the evaporated water. You can do this more than once to get purer water. One thing though, you'll end up with a significantly smaller amount of water than you started with, so you have to compensate for that.

bch 15y ago

> Evaporation would leave the salt (and most other minerals) That's a good point. I can't say I know the answer, but I've read/heard that drinking this mineral-free water can have long-term adverse health effects (leaches minerals from your body into the mineral free water?). I see articles for/against this theory. Interested to hear comments from anybody who actually knows details. Of course dying from thirst or salt poisoning in a few days versus the long-term prospect of slow mineral loss make the choice a no-brainer in the case of an emergency.

gnosis 15y ago
"I've read/heard that drinking this mineral-free water can have long-term adverse health effects (leaches minerals from your body into the mineral free water?). I see articles for/against this theory. Interested to hear comments from anybody who actually knows details." Take a look at: http://www.finishing.com/156/65.shtml http://www.finishing.com/156/65.shtml My favorite quote from that thread: "If it is a concern & all you have to drink is ultrapure water, you can stir the water with a metal stainless spoon or your finger first & it will magically transform itself from ultrapure water to just water."
- bch 15y ago
  Thanks for the link, but not very convincing. The site itself is a forum for the metal finishing industry; like chrome and silver plating, not something I'd hold up as expert in human health and diet. Most of the discussion oscillates between "Yes it's harmful. If you want to consume DI water that does x, do so at your peril." and "No it's not harmful. Why are you afraid of something we already use for x?"