Metal-organic Water Harvester
Metal-organic Water Harvester
technology application

Metal-organic Water Harvester

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updatedMar 26, 2021
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David @ stock.adobe.com

A passive drinking water harvesting system powered by solar heat. Based on a foam-like material, it draws moisture from the dry air into its pores.
A passive drinking water harvesting system powered by solar heat. Based on a foam-like material, it draws moisture from the dry air into its pores.

A tool that harvests drinking water from the air, regardless of humidity levels. Metal-organic Frameworks (MOFs) are the compounds that guarantee this technology's success: it generates a sponge-like configuration with large internal surface areas. By fine-tuning the exact chemical composition of the MOF, these surfaces can be made hydrophilic or water-attracting.

This water-harvesting tool is entirely passive, relying only on the high water uptake capacity, low-grade heat requirement for desorption, and ambient temperatures to condense and collect the water and solar power. Tests have already shown it operates under extreme conditions, like a 20% humidity ratio, and still provides enough water to match the basic human needs: one kilogram of material can provide three quarts of water per day.

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