From: A critical study on efficiency of different materials for fluoride removal from aqueous media
Adsorbent
AC (mg/g)
CR (mg/L)
pH
Ref.
La(III) impregnated on alumina
48.0
276 -300
5.7-8.0
[37]
Alum-impregnated activated alumina
40.7
1-35
6.5
[38]
Copper oxide coated alumina
7.8
10- 15
-
[39]
Magnesia-amended activated alumina
10.1
5-150
6.5-7.0
[40]
Calcium oxide-modified activated alumina
101.0
1-1000
5.5
[42]