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2019-08-27. Water harvester makes it easy to quench your thirst in the desert.

posted Sep 7, 2019, 1:54 PM by Alan Gould
By Bob Sanders, UC Berkeley News. [https://news.berkeley.edu/2019/08/27/water-harvester-makes-it-easy-to-quench-your-thirst-in-the-desert/] For GSS Climate Change chapter 10. Excerpt: With water scarcity a growing problem worldwide, University of California, Berkeley, researchers are close to producing a microwave-sized water harvester that will allow you to pull all the water you need directly from the air — even in the hot, dry desert. In a paper appearing this week in ACS Central Science, a journal of the American Chemical Society, UC Berkeley’s Omar Yaghi and his colleagues describe the latest version of their water harvester, which can pull more than five cups of water (1.3 liters) from low-humidity air per day for each kilogram (2.2 pounds) of water-absorbing material, a very porous substance called a metal-organic framework, or MOF. That is more than the minimum required to stay alive. During field tests over three days in California’s arid Mojave Desert, the harvester reliably produced 0.7 liters per kilogram of absorber per day — nearly three cups of clean, pure H2O. That’s 10 times better than the previous version of the harvester. The harvester cycles 24/7, powered by solar panels and a battery....  See also Science Magazine: Crystalline nets harvest water from desert air, turn carbon dioxide into liquid fuel [https://www.sciencemag.org/news/2019/09/crystalline-nets-harvest-water-desert-air-turn-carbon-dioxide-liquid-fuel]