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Boiling tap water can remove 90 percent of microplastics
(www.livescience.com)
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this post was submitted on 01 Mar 2024
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The calcium carbonate in hard water precipitates out when you boil it, i.e. it turns solid.
Microplastics make for great nucleation points for the calcium carbonate to latch onto. So, the microplastics became super easy to filter out of the water (with some getting stuck to the bottom of the kettle in that white scale that you have to use vinegar to clean out.