Research Article

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

Table 5

Removal of other anions at a concentration (A) as same as the phosphate concentration, (B) lower than the phosphate concentration, and (C) higher than the phosphate concentration.

AnionInitial concentration (mg/L)Final concentration (mg/L)Removal (%)
ABCABCABC

Fluoride0.7894.4341.7560.5333.4391.24732%22%29%
Nitrate0.8674.8721.8640.9404.9702.033C/IC/IC/I
Phosphate2.0012.1152.0540.0000.0000.000100%100%100%
Sulphate0.8264.5931.8241.0884.7212.104C/IC/IC/I

C/I: concentration increased.