Although tens of thousands of liters of water float in the air, it is difficult for humans to extract it. Now the research team from the University of California, Berkeley has successfully developed a solar-powered device that extracts water for human consumption in thin air and has been field tested in the Arizona desert.
Although this is not the first device to attempt to extract moisture from the air, Berkeley's equipment looks more practical than Warka Water and is more mature than the existing systems on the Water Abundance XPrize list. The main component of this equipment is the metal organic framework (MOF). This compound is well known for its extremely high surface area. For example, the MOF of the sugar cube size can theoretically reach the area of ​​six soccer fields, so these materials are very suitable for capturing and storing water molecules from the air.
The team used a zirconium-based MOF-801 material to capture moisture, collect moisture through a 2 square foot (0.19 square meter) surface area, and obtain moisture from the air in 24 hours after simple condensation. In addition, the research team also tried to use MOF based on aluminum, which is not only 150 times cheaper, but also captures more than twice the water resources. The future version of the device, 1Kg of MOF, is capable of capturing 400 ml (1.5 cups) of water per day.
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