Facile Synthesis of Hollow MgO Spheres and Their Fluoride Adsorption Properties

Table 3

Comparison of the fluoride adsorption properties of various adsorbents.

Adsorbents	Adsorption capacity (mg/g)	Dose (g/L)	pH	Ref.
Alumina	83.3	1	6	[17]
Mg-Al bimetallic oxides	89.3	1	6	[39]
Zirconium oxide	19	20	4.75	[40]
Fe-Zr hybrid oxide	7.5	1	6	[41]
CeO2-ZrO2 nanocages	175	0.2	4	[42]
Al-Ce hybrid	27.7	0.1	6	[43]
Fe2O3·Al2O3·xH2O	30	2	4	[44]
Aluminum-modified hydroxyapatite	32.57	5	7	[15]
MgO/chitosan	>4.44	2	7	[45]
Commercial MgO powder	>45.2	1	7	Present work
Hierarchical MgO microspheres	>182.4	1	7	Present work