Table 4.
A review of hazardous metal adsorption performance of different adsorbents in synthetic wastewaters.
| Targeted metal | Sorption capacity (mg/g) | Adsorbent | Concentration | Solution pH | Reference |
|---|---|---|---|---|---|
| Cd(II) | 188.7 | ZIF-L/GO | 10–200 mg/L | 6 | [44] |
| Cd(II) | 45.66 | Magnetic biochar | 50 mg/L | 7.0 | [45] |
| Cd(II) | 35.5 | LaFe@CS | 0.2–5 mg/L | 6.5 | [46] |
| Cd(II) | 265 | Ag–Fe-MOF | 50–200 mg/L | 7 | [47] |
| Cu(II) | 84.65 | Zeolite Na–P1 | 40–200 mg/L | 3 | [48] |
| Cu(II) | 110.5 | DTPA-chitosan/alginate composite beads | 20–500 mg/L | 3 | [49] |
| Cu(II) | 32.0 | Carbon nanotube sheets | 5–35 mmol/L | 4.2 | [50] |
| Pb(II) | 411.8 | Covalent organic framework (Ni0.6Fe2.4O4-HT-COF) | 100–700 mg/L | 5 | [51] |
| Pb(II) | 431.6 | Coal gangue derived NaY zeolite | 10–200 mg/L | 7 | [52] |
| Cd(II) Cu(II) |
44.64 33.76 |
Synthetic clinoptilolite | 10–600 mg/L | 5 | [53] |
| Cd(II) Cu(II) Pb(II) |
74.1 57.8 109.9 |
FAU zeolite | 100–500 mg/L | – | [18] |
| Cd(II) Cu(II) Pb(II) |
75.5 37.1 – |
Methacrylate-Na-Y-Zeolite | 5–100 mg/L | 4.5 | [38] |
| Cd(II) Cu(II) Pb(II) |
26.9 20.9 88.3 |
NaP1 zeolite | 0–295 mg/L 0–223.5 mg/L |
5.6 | [17] |
| Pb(II) | 1385 | CS/Fe-HAP composite bead | 100–700 mg/L | [54] | |
| Pb(II) | 497.01 | Zeolite P | 10–1000 mg/L | 5.0 | [55] |
| Cu(II) | 175 | Cellulose-g- Poly(acrylamide) | 1–3.6 mol/L | 5.8 | [56] |
| Cd(II) Cu(II) Pb(II) |
117.3 42.9 534.3 |
NaP zeolite | 10–250 mg/L | 5.2 | This study |
| Cd(II) Cu(II) Pb(II) |
223.5 140.1 850.7 |
LTA zeolite | 50–500 mg/L |