Parameter | Metal ion | Optimum Quantity Adsorbed at Equilibrium (mg/g) | |
Iron oxide | Goethite | ||
Contact Time | Co(II) | 95.1 | 100 |
Ni(II) | 81.4 | 80.2 | |
Adsorbent Dose | Co(II) | 96.2 | 105.6 |
Ni(II) | 82.2 | 93.2 | |
pH | Co(II) | 103.9 | 117.8 |
Ni(II) | 85.2 | 100.6 |