Thermodynamic parameters for the adsorption of MB and aniline onto EFAC.
| Isotherms | Parameters | MB | Aniline | ||||
|---|---|---|---|---|---|---|---|
| 15 | 25 | 35 | 15 | 25 | 35 | ||
| Langmuir | q max | 649.35 | 662.25 | 714.29 | 26.67 | 27.10 | 27.32 |
| R L | 0.1344 | 0.1795 | 0.1772 | 0.0242 | 0.0274 | 0.0296 | |
| R 2 | 0.9846 | 0.9850 | 0.9869 | 0.9953 | 0.9933 | 0.9955 | |
| Freundlich | n | 3.7509 | 4.5704 | 4.5704 | 2.1079 | 2.1872 | 2.2109 |
| K F | 9.3924 | 10.5066 | 10.5066 | 1.3038 | 1.3818 | 1.4147 | |
| R 2 | 0.9599 | 0.9756 | 0.9856 | 0.9818 | 0.9791 | 0.9772 | |
| Tempkin | b | 196.13 | 162.74 | 162.74 | 11.566 | 11.503 | 11.574 |
| A | 2.5341 | 5.1582 | 5.1582 | 0.6368 | 0.6911 | 0.7145 | |
| R 2 | 0.9767 | 0.9687 | 0.9687 | 0.9790 | 0.9721 | 0.9738 | |
| Dubinin–Radushkevich | q max | 477.71 | 480.97 | 464.38 | 19.58 | 16.20 | 16.54 |
| E | 1581.1 | 3535.5 | 7453.6 | 100.00 | 353.55 | 408.25 | |
| R 2 | 0.8455 | 0.8146 | 0.7037 | 0.8509 | 0.7043 | 0.7067 | |