According to FAO estimates, by 2025 nearly 2 billion people may not have enough drinking water to satisfy their daily needs. One of the possible solutions to this problem is retaining water from the air. This solution could be used in disaster situations, water crises or poverty-stricken areas and developing countries.
According to SolarDaily news, a breakthrough by engineers at The University of Texas at Austin may offer a new solution through solar-powered technology that absorbs moisture from the air and returns it as clean, usable water. The technology relies on hydrogels, gel-polymer hybrid materials designed to be “super sponges” that can retain large amounts of water.
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 systems. “We have developed a completely passive system where all you need to do is leave the hydrogel outside and it will collect water,” said Fei Zhao, a postdoctoral researcher on the Guihua Yu, leader of the research, team. “The collected water will remain stored in the hydrogel until you expose it to sunlight. After about five minutes under natural sunlight, the water releases.” ——————–***——————-
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Location: University of texas austin
Date: Mar 19, 2019 @ 10:18
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