Defluoridation of drinking water by boiling with brushite and calcite.

@article{Larsen2002DefluoridationOD,
  title={Defluoridation of drinking water by boiling with brushite and calcite.},
  author={Michael J. Larsen and Euan I F Pearce},
  journal={Caries research},
  year={2002},
  volume={36 5},
  pages={341-6}
}
Existing methods for defluoridating drinking water involve expensive high technology or are slow, inefficient and/or unhygienic. A new method is now suggested, encompassing brushite and calcite suspension followed by boiling. Our aim was to examine the efficiency of the method and the chemical reactions involved. Brushite, 0.3-0.5 g, and an equal weight of calcite were suspended in 1 litre water containing 5-20 ppm fluoride. The suspensions were boiled in an electric kettle, left to cool and… CONTINUE READING