Table 5 Adsorption efficiency over reuse cycles.
Eluent | Temperature (°C) | Cycle | HA-100 (%) | HA-500 (%) | HA-900 (%) |
|---|---|---|---|---|---|
HCl | 25 | 1 | 100 | 100 | 100 |
2 | 72 | 84 | 87 | ||
3 | 55 | 68 | 79 | ||
40 | 1 | 100 | 100 | 100 | |
2 | 75 | 86 | 89 | ||
3 | 58 | 70 | 81 | ||
60 | 1 | 100 | 100 | 100 | |
2 | 78 | 87 | 91 | ||
3 | 62 | 73 | 83 | ||
NaOH | 25 | 1 | 100 | 100 | 100 |
2 | 74 | 85 | 88 | ||
3 | 57 | 72 | 81 | ||
40 | 1 | 100 | 100 | 100 | |
2 | 76 | 88 | 90 | ||
3 | 60 | 76 | 84 | ||
60 | 1 | 100 | 100 | 100 | |
2 | 78 | 89 | 92 | ||
3 | 62 | 79 | 85 |
