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

Table 4

Adsorption capacities of other materials used by other researchers.

Material	Absorption capacity ()	Reference
Activated carbon-silica nanoparticle composite	0.65 mg/g	[50]
Titanium oxide nanoparticles	0.77 mg/g	[28]
Red mud (with acid and acid-thermal treatments)	0.58 mg/g	[51]
Phosphate mine wastes	8.70 mg/g	[15]
Silver nanoparticle-loaded activated carbon derived from tea residue	13.62 mg/g	[52]
Iron oxide nanoparticles synthesized by eucalyptus leaf extract in the presence of CTAB surfactant	18.69 mg/g	[53]
Vaterite polymorph of porous calcium carbonate nanoparticles	1.87 mg/g	Present research