Details of isotherm constants and correlation coefficient of determination for various adsorption isotherms for the adsorption of RB onto MNP-PANI-DICAT.
| Isotherm models | Parameters | Temperatures (K) | ||
|---|---|---|---|---|
| 298 K | 318 K | 338 K | ||
| Langmuir | q m (mg g−1) | 109.8901 | 51.0204 | 59.5238 |
| b (L mg−1) | 0.1102 | 0.2444 | 0.0558 | |
| R 2 | 0.3000 | 0.9815 | 0.5169 | |
| R L | 0.1019 | 0.0487 | 0.1830 | |
| Freundlich | K F ((mg g−1) (L mg−1)1/n) | 10.7275 | 8.4217 | 3.7783 |
| n F | 1.1192 | 1.5741 | 1.3589 | |
| 1/n | 0.8935 | 0.6353 | 0.7359 | |
| R 2 | 0.8664 | 0.9615 | 0.8103 | |
| Temkin | K T (L mg −1 ) | 3.4470 | 4.7050 | 1.4136 |
| b T (kJ mol −1 ) | 172.2090 | 295.0040 | 294.4980 | |
| R 2 | 0.9767 | 0.9560 | 0.9555 | |
| Dubinin–Radushkevich | q m (mg g−1) | 37.2369 | 25.9404 | 24.2617 |
| β (mol2 kJ−2) | 0.2199 | 0.1096 | 0.5079 | |
| R 2 | 0.9069 | 0.8622 | 0.7104 | |
| E | 4.2650 | 6.0412 | 2.8063 | |
| Halsey | N | −1.1192 | −1.5741 | −1.3588 |
| K | 0.0703 | 0.0349 | 0.1643 | |
| R 2 | 0.8664 | 0.9615 | 0.8103 | |