Table 6.
Comparison between FA and other adsorbents.
| Adsorbent | Adsorption capacity, mg/g | References |
|---|---|---|
| Calcium-rich fly ash | 9.41 | 55 |
| Bagasse fly ash [BFA] | 11.885 | 56 |
| Untreated Bottom Ash | 24.36 | 57 |
| Physical activated bottom ash | 106.61 | 57 |
| Fly ash/NiFe2O4 composites [FANiFe50] | 22.73 | 50 |
| Bricks Kiln Chamber Fly Ash | 33.3 | 58 |
| Synthesised zeolites from fly ash [ZS1, ZS2, ZS3, ZS4, ZS5, ZS6, ZS7, CZX] | 110.24; 132.52; 140.26, 128.56; 132.52; 146.53; 162.35; 88.64 | 59 |
| Zeolite/algae composite [ZPG] | 12.25 | 60 |
| Padina gymnospora [PG] | 12.38 | 60 |
| Zeolite [Z] | 9.23 | 60 |
| FA | 22.12 | Present study |