Regeneration Analysis of Bone Char Used in Water Defluoridation: Chemical Desorption Route, Surface Chemistry Analysis and Modeling

Figure 3

Fluoride adsorption isotherms using raw and regenerated bone char samples at pH 7 and 30°C. (a) Regeneration with 0.01 M NaOH. (b) Regeneration with 0.05 M NaOH. (c) Regeneration with 0.075 M NaOH.

(a)

(b)

(c)