Table 3. Comparison of the Removal of AO and RB Dyes by Different Adsorbents.
| adsorbent | dye | pH | adsorbent mass (mg) | contact time (min) | qm (mg/g) | refs |
|---|---|---|---|---|---|---|
| humic acid-modifying Fe3O4 NPs | RB | 2.53 | 100 | 30 | 161.8 | (36) |
| Sistan sand | RB | 6.0 | 1000 | 30 | 0.11 | (37) |
| 3A zeolite | RB | 9.0 | 1000 | 40 | 0.74 | (38) |
| carboxylated cellulose derivative | AO | 6.0 | 70 g//L | 24 h | 5.443 | (39) |
| MOF-5-Ag2O-NPs | AO | 6.0 | 25 | 50 s | 260.70 | (40) |
| ZnS:Cu-NP-AC | AO | 7.0 | 40 | 2.2 | 94.2 | (41) |
| Fe3O4/C–COP | AO | 6.5 | 12 | 4 | 107.11 | (42) |
| Fe3O4/C–COP | RB | 6.5 | 12 | 4 | 131.23 | (42) |
| M5C | AO | 9.5 | 16 | 8 | 17.95 | this work |
| M5C | RB | 9.5 | 16 | 8 | 16.18 | this work |