Solar desalination system eliminates toxic brine while producing fresh water
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Summary
Scientists have developed a solar-powered desalination system that converts seawater into fresh water without producing toxic brine, a major environmental drawback of traditional desalination. The system uses laser-textured metal panels that harness sunlight to evaporate water while automatically moving salt deposits away from the working surface to prevent clogging. Tested successfully with water from three oceans, the process can recover nearly all salts as solids, including potentially valuable lithium for batteries. This addresses the global need for affordable, sustainable drinking water for the 2.2 billion people lacking safe access.
Key quotes
· 3 pulled2.2 billion people still do not have access to safely managed drinking water.
Traditional desalination methods such as reverse osmosis and thermal distillation can be expensive and energy intensive.
When discharged back into the ocean, brine can damage marine ecosystems.
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