| | Study contents | Experiment conditions | | Bentonite content in laterite (%) | Contact time (min) | Solid-liquid ratio (g/L) | Initial solution contention (mg/L) | pH value | Ion strength (mol/L) | Temperature (K) |
| | Kinetics adsorption test | 0, 10, 20 | 5, 10, 20, 30, 60, 120, 240, 480 | 5 | 100 | 5.5 | 0 | 298 | | Equilibrium adsorption test | 0, 10, 20 | 30 | 5 | 20∼1000 | 5.5 | 0 | 298/323 | | Influence of | 0, 10, 20 | 30 | 0.5, 1, 2, 5, 10, 20, 40, 60, 100, 200 | 100 | 5.5 | 0 | 298 | | Influence of pH | 0, 10, 20 | 30 | 5 | 100 | 2/5.5/7/9/11 | 0 | 298 | | Influence of ion strength | 0, 10, 20 | 30 | 5 | 100 | 5.5 | 0/0.01/0.1/1 | 298 |
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