Riyadh "Riyadh Daily"
KACST is to use nano technology to harvest water from air

The King Abdulaziz City for Science and Technology (KACST) is to use a  new  solar powered device  to absorb water from the air using nano technology.

The newest prototype water harvester is the efforts of cooperation between the King Abdulaziz City for Science and Technology (KACST), with the University of California-Berkeley.

The joint research was carried out by the combined  team at the Center for Excellence in Nanotechnology for Clean Energy Applications, together with Prof. Omar Yaghi, winner of the King Faisal Prize in 2015 and the Albert Einstein International Prize for Science in 2017.

The researchers anticipate that with the current MOF (MOF-801), made from the expensive metal zirconium, they will ultimately be able to harvest about 200 milliliters (about 7 ounces) of water per kilogram (2.2 pounds) of MOF, or 3 ounces of water per pound.

The water harvester can extract drinkable water every day/night cycle at very low humidity and at low cost, making it ideal for people living in arid, water-starved areas of the world.

The MOF works by placing it in a box inside a box. The inner box contains a 0.2 square meter base with open MOF powder on the air and placed inside the transparent plastic box. The lid of the outer box is left open at night to allow air Pass on the material, then close in the day to increase the temperature inside the box and evaporate water and condense inside the box.

The King Abdulaziz City for Science and Technology is keen to develop nano materials for their contribution to the provision of water in remote and desert areas and use it for drinking and irrigation and to increase the vegetation cover and eliminate desertification in the Kingdom.

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