NEWDEF® Hydroxyapatite is rapidly becoming the media of choice for removing fluoride from potable and waste water. The media is aluminium  III activated .   This media can also be used for fluoride removal in waste water including  the aluminium finishing waste waters that use fluoride containing chemicals.

Available in 25kg Bags.

Fluoride Removal – Newdef Hydroxyapatite



Fluoride removal – NEWDEF ®Hydroxyapatite 

Fluoride Removal using NEWDEF: Hydroxylapatite, also called hydroxyapatite (HA), is a naturally occurring mineral form of calcium apatite with the formula Ca5(PO4)3(OH).   Our media is specially treated and activated using aluminium to make it more effective.    The principle of  fluoride removal is based on  the  OH  ion in the media being replaced by  fluoride producing fluorapatite  .

It is one of the most effective adsorbents of fluoride  with much faster reaction times than Activated Alumina. In comparative performance trials using Brisbane  water containing Fluoride,  aluminium activated Calcium Hydroxyapatite  outperformed  other media including activated alumina and fluoride specific ion exchange media.


Performance test various filtration media – removal of fluoride from water

Benefits of Calcium Hydroxyapatite media:

  • Much faster contact times compared to activated alumina.
  • Is a natural occurring mineral that is often used as a natural  mineral supplement.
  • Does not release any harmful substances into the water that is to be treated.
  • Can be used for waste water treatment .
  • Has a higher absorption capacity compared to other media used for de-fluoridation.

De-fluoridation Capacity

The De-fluoridation capacity of hydroxyapatite  is about 2~4 mg/g which is superior compared to most medias  under  the same conditions. The capacity is impacted  by different raw water quality including fluoride concentration, temperature, co-existing ions etc..

NEWDEF Fluoride Removal Media

Hydroxyapatite  Features and Benefits

  • High capacity and shorter contact time
  • Very safe to use; no dissolution of toxic and hazardous substances
  • High efficiency,  hydroxyapatite can remove  up to 99% fluoride  in raw water.
  • Limited competing interference  by other  ions
  • Lower regeneration cost and simple regeneration process
  • Not only restricted to Fluoride ,but can remove iron and manganese as well

Fluoride Removal – Performance Comparison

Fig below demonstrates that the NEWDEF® media( Hydroxyapatite)  outperforms  other common Defluoridation materials under the same conditions. The treated water volume before fluoride breakthrough  of NEWDEF® is About 5.09—11.7 times of activated alumina and 12.9—23 times of activated Clinoptilolite.

NEWDEF Fluoride Removal Media
Figure 1The volume of water treated by different medias under the same conditions, the  initial concentration of fluoride is 6mg/L in raw water


NEWDEF Fluoride Removal Media

Figure 2.  The volume of water treated by different media under the same conditions, the concentration of fluoride is 2mg/L in raw water


Sodium hydroxide regeneration

It’s the reverse  reaction of the  defluoridation mechanism. OH replaces F on the  particle surface.   Regeneration is carried out using 0.5 to 1 % caustic solution which is recirculated for 6-12 hours.

NEWDEF Fluoride Removal Media


Additional information

Weight 26 kg
Dimensions 60 x 40 x 25
Size Kg

1 kg, 25kg