Table 3.
Literature reports on extensive comparison of the adsorption capacities (Qe) for Cu(II) and Cd(II) using various adsorbents.
| Metal ions | Adsorbents | Qmax (mg/g) | Conditions [pH & dosage (g/L)] |
Ref. |
|---|---|---|---|---|
| Cd(II) | AC-thiourea | 12.10 | 7 & 0.5 | 13 |
| EO ACC | 157.34 | 7.5 & 0.5 | 50 | |
| CMOF-199 | 113.30 | 5 &0.75 | 51 | |
| MBC | 54.70 | 6 & 2.0 | 52 | |
| P/Mg-engineered biochars | 113.90 | 5.6 & 4.0 | 53 | |
| ZIF − 8@PAN nanofiber | 102.00 | 7.5 & 0.4 | 54 | |
| Modified ACF | 214.59 | 5 & 0.5 | This study | |
| Cu(II) | PTh/MnO2 | 60.79 | 6 & 2.0 | 55 |
| NM-ACFF | 23.13 | 6 & 0.2 | 26 | |
| IDA-OAC | 84.51 | 5 & 0.02 | 56 | |
| Fe3O4-MnO2-EDTA | 46.39 | 6 &0.2 | 57 | |
| SA/CMC-ZFN | 63.29 | 5 & 0.5 | 58 | |
| Modified ACF | 163.39 | 5 & 0.5 | This study |