Environmental Science
Boiling concentrates fluoride rather than removing it. What actually takes it out is a metal oxide surface
30 Aug 2026 · 12 min read
Fluoride and arsenic in Indian groundwater pass straight through boiling, chlorination and every candle filter, because they are dissolved ions rather than particles or microbes. Here is what removes them, why arsenic must be oxidised first, and where 'nano' genuinely helps rather than merely appearing on the box.
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