Harnessing the sun to bring mobile desalination units that make fresh drinking water to remote and disaster-struck communities will be possible within five years, say researchers at the University of Bath. They have developed a revolutionary desalination process that can be operated in mobile, solar-powered units.
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A new level of efficiency in using sunlight to turn seawater into fresh drinking water has been achieved. The completely passive solar-powered desalination system could provide more than 5.6 liters (1.5 gallons) of potable water an hour for every square meter of solar collecting area.
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The fast-rising number of desalination plants worldwide, with capacity concentrated in the Middle East and North Africa, satisfy a growing thirst for fresh drinking water but create a salty dilemma – how to safely deal with all the chemical-laden leftover brine.
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Solar is already the world’s fastest-growing power generation source, and the future looks bright for the widescale adoption of solar power. As this decade nears a close, the national trade association for the U.S. solar industry has designated the next decade The Solar+ Decade.
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“We have a water crisis, which is based on increasing population, urbanization and climate disruption. And there’s unsustainable use of our water,” said Argonne National Laboratory researcher Seth Darling. “Part of addressing this is through policy solutions, but we also need new, more energy-efficient and cost-effective technologies.”
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