（レーザー関連）アメリカ・ロチェスター大学／New method turns ocean water into drinking water, without waste

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The energy-efficient desalination system produces fresh water without chemical additives and transforms leftover salts into useful materials.

Big takeaways

• >A new desalination method produces drinking water from seawater without chemical additives.
• >The solar-powered system uses specially engineered black metal to absorb sunlight.
• >Its self-cleaning surface separates and collects salts, instead of dumping them as harmful brine waste.
• >From the salts, the system can extract lithium, a key material for rechargeable batteries.
• >The approach could help address global water shortages and growing mineral demand.