Table 3.
Adsorption capacities (AC) and other parameters for the removal of fluoride by Iron-based adsorbents
| Adsorbent | AC (mg/g) | AD (g/L) | CR (mg/L) | pH | Ref. |
|---|---|---|---|---|---|
| PPy/Fe3O4 nanocomposite |
17.6 − 22.3 |
2.0 |
5-100 |
6.5 |
[43] |
| Fe/Al hydroxide |
91.7 |
0.5 |
10-90 |
4.0 |
[45] |
| Fe-Al-Ce nanoadsorbent |
2.22 |
5.0 |
19-25 |
7.0 |
[46] |
| Stilbite zeolite modified with Fe(III) |
2.31 |
10.0 |
5-40 |
6.9 |
[47] |
| GC(FeSO4.7H2O), GC(Fe2O3) |
2.16, 1.70 |
20.0 |
5-50 |
6.9 |
[48] |
| Synthetic Siderite |
1.77 |
4-40 |
3-20 |
4-9 |
[50] |
| Fe―Ti oxide nano-adsorbent |
47.0 |
0.5 |
50 |
6.9 |
[51] |
| Mg-doped nano ferrihydrite powder |
64.0 |
0.5-4 |
10-150 |
5.75 |
[52] |
| Fe(III) modified montmorillonite | - | 1 | 2-10 | 3.5-9.0 | [53] |