Monday 25 March 2019
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business-standard - 10 days ago

New solar-powered device creates water from thin air

In a breakthrough , scientists have developed a novel solar-powered harvesting system that absorbs moisture from the air and converts it into clean, usable water. The technology, described in the journal Advanced Materials, could be used in disaster situations, water crises or poverty-stricken areas and developing countries. It relies on hydrogels, gel-polymer hybrid materials designed to be super sponges that can retain large amounts of water. Researchers led by Guihua Yu from The University of Texas at Austin in the US used hydrogels that are both highly water absorbent and can release water upon heating. This unique combination successfully worked in humid and dry weather conditions and is crucial to enabling the production of clean, safe drinking water from the air, the researchers said. With an estimated 50,000 cubic kilometers of water contained in the atmosphere, this new system could tap into those reserves and potentially lead to small, inexpensive and portable filtration .


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