Removal of Phosphate from Aqueous Solutions Using Chemically Synthesized Vaterite Polymorph of Porous Calcium Carbonate Nanoparticles under Optimized Conditions

Figure 6

Phosphate removal percentages at different (a) contact times (min), (b) particle dosages, (c) pH levels, and (d) initial phosphate concentrations (mg/L) and (e) pH change during the treatment.

(a)

(b)

(c)

(d)

(e)