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Published online 15 May 2002 | Nature | doi:10.1038/news020413-4
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Sound cleans up water purification
High-energy bubbles scour municipal water filters.
Sound waves could provide a greener way to make tap water taste better.
Ultrasound can make bubbles in water that could clean ceramic filters quickly and cheaply, say Linda Weavers and colleagues of Ohio State University, Columbus1.
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