Table 2.
Comparison of adsorption capacity/removal efficiency of various magnetic adsorbents for dyes.
| Magnetic Adsorbent | Dye | Isotherm | Adsorption capacity (mg g−1) | Reference |
|---|---|---|---|---|
| Chitosan coated Fe3O4 nanoparticles | Reactive Yellow 145 | Langmuir | 47.62 | [2] |
| Sodium alginate-coated Fe3O4 nanoparticles | Malachite green | Langmuir | 47.84 | [3] |
| PGA-coated Fe3O4 nanoparticles | Methylene blue | Langmuir | 78.67 | [4] |
| L-Serine functionalized Fe3O4 NPs | Rhodamine B | Langmuir | 6.82 | [5] |
| Magnetic Fe3O4@SiO2 starch-graft-poly (acrylic acid) (SPAA) nanocomposite hydrogels | Crystal violet | Langmuir | 80.64 | [6] |
| MNP@St-g-PVS | Methylene blue Malachite green |
Langmuir | 621 567 |
[7] |
| Lignin magnetic nanoparticles (LMNPs) | Methylene blue | Langmuir | 211.42 | [8] |
| Lignin amine magnetic nanoparticles (LAMNPs) | Acid scarlet GR | Langmuir | 176.49 | [8] |
| Fe3O4/Poly (styrene-co-methacrylic acid) | Crystal violet Rhodamine B |
Langmuir | 416.66 69.54 |
[9] |
| Chitosan coated Fe3O4 nanoparticles | Orange I | Langmuir | 180.8 | [10] |
| Starch-coated Fe3O4 NPs | Optilan blue | Langmuir | 86–125 | [1] |