Most atmospheric water-vapour harvesting methods, which I found so far, are based on the principle of dew formation. Triggering adsorption by moving air passed an hydrophobic / hydrophilic object (e.g. foil) which is cooled below dew point.
Are there any projects known/research done where a desiccant-fibre (e.g. Wool, Cotton, Polymers) absorbs atmospheric water-vapour in hydroxyl groups and/or amorphous areas when being exposed to air?
The harvesting happens in a second step when increased energy ‘breaks’ the water away from the desiccant. So far, I know only of one company (www.aquasciences.com) which is using this principle, charging a salt.
Indo thermal chemical reactions are used for this purpose to harvest water vapor from atmosphere.
You can think about bed coalescers with stainless still fibers. Suggestion key words for looking papers on this subject are mist removal by fiber filters.
Bed coalescers are attractive both in capital and operating cost.
i had an experience . when i put a few onion and garlic on the sand or LECA in the pot which there was a little water in the bottom of it , the tubers grew very well whiout any access irrigation
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