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Scalene Aquaria sell a machine that collects from moisture from the air.

They describe a nine-stage process - most of it looks like hogwash, but this one made me more curious:

  • The Eighth stage is essential and trace minerals balancing. Balanced amount of minerals required for good health is retained in the water without adding any chemicals.

This suggests that water collected from the atmosphere contains minerals.

Are there minerals in atmospheric water to be “retained”?

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    "Atmospheric water" is presumably water in its gas phase, which is mixed in with lots of other gasses and also any particulates that happen to be floating around. If you pump the air through a condenser then you are going to collect particulates along with the water, and also any other gasses with a condensation point above that of your condenser (e.g. various organic solvents). How much and what they are depends on where you are and whether you do any air filtration first. – Paul Johnson Apr 21 '18 at 16:47
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Yes, atmospheric water does contain small amounts of elements and minerals, and the types and amounts of minerals vary based on location. Unfortunately, since Scalene Aquaria's claim doesn't seem to address which minerals it is balancing or what 'balanced amounts' of those minerals are, so we can't be sure one way or the other whether their claim of 'balanced amounts' of minerals is actually true.


This paper details the chemical composition of rainwater collected in India. They found traces of ammonium nitrate, ammonium sulfate, calcium, magnesium, and several other elements and minerals.

This paper details an investigation into elevated lead levels being found in rainwater collection tanks in Australia, and although the lead didn't actually come from atmospheric dust as was at first believed, the fact that the word 'elevated' was used implies some amount of lead in rainwater is expected.

Finally, This paper details attempts at purifying rainwater in China, and that they were testing the removal of lead, zinc, and ammonium nitrogen from the rainwater. If they wanted a process to remove those elements from rainwater, then presumably they are common elements in atmospheric water.

  • Do you by any chance know of a working AWG for consumers? All I find are cancelled kickstarter projects turned out to not work or fail to launch :( – mplungjan Apr 20 '18 at 7:25
  • @mplungjan: They're usually failed projects because the idea behind them is to provide clean water to dry areas by collecting water from humid air. The problem is dry areas do not usually have humid air, as explained by this fine chap. Buy a dehumidifier to collect water and one of those water filter things to clean it, and you now have an AWG. – Giter Apr 20 '18 at 15:22
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    The three papers cited are all based on analysis of rainwater. Raindrops form around microscopic particulates in the air, that likely being the source for mineral content. OTOH, water that is essentially "distilled" from humid air does not form around such particulates and like any other distilled water would be extremely pure and devoid of minerals, which is one reason distilled water is recommended for use in steam irons. – Norm Apr 20 '18 at 17:13
  • @Giter I do not have power where I need the dehumidifier. – mplungjan Apr 20 '18 at 17:32
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    @giter - your missing the point. "humidity" is not what contains the particles and altitude is irrelevant. Rain formation causes the humidity (which is pure H2O) to condense around the particulates. Distillation is a completely different process, where humidity condenses on a cooled surface - no particulates are involved. – Norm Apr 22 '18 at 20:36

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