Comparison of the monolayer adsorption capacities obtained for acid dyes, with available literature.
| Adsorbate dye | Q m (mg g−1) | Adsorbent | Ref. |
|---|---|---|---|
| Rhodamine B | 89.3 | SDS modified molecular seeds supported by Fe2O3 | 55 |
| Acid violet 19 | 0.99 | Polyaniline–Fe2O3 | 56 |
| Acid red | 16.31 | γ-Fe2O3 nanoparticles (50 nm) | 57 |
| Anthraquinone blue | 25.70 | Fe2O3 powder | 58 |
| Methyl orange | 34.29 | Fe2O3/SiO2/chitosan composite | 59 |
| Congo red | 200.8 | γ-Fe2O3 nanoparticles | 60 |
| Alizarin red S | 108.69 | Carbon/γ-Fe2O3 | 61 |
| SAB-NBF | 108.58 | Raw laterite | Current study |
| SAB-NBF | 161.29 | Calcined laterite | |
| SAB-NBF | 384.62 | IONp |