Isotherms | Parameters | Adsorbate | ||
|
| Congo Red | Methyl Orange | |
Langmuir | qm (mg/g) | 24.81 | 21.23 | |
| KL | −0.4306 | −0.1365 | |
| RL | −0.0078 | −0.0250 | |
| R2 | 0.998 | 0.9989 | |
Freundlich | nF | 3.7 | 5.47 | |
| KF | 37.3488 | 50.9732 | |
| R2 | 0.9919 | 0.9910 | |
Temkin | bT (kJ/mol) | 0.7374 | −0.5362 | |
| BT | −2.6164 | −4.6209 | |
| AT | 1.11 x 10−6 | 9.06 × 10−5 | |
| R2 | 0.9932 | 0.9937 | |
Dubinin?Radushkevich | BD (mol2/J2) | 5 x 10−6 | 3 x 10−5 | |
| E(kJ/mol) | 0.3162 | 0.1291 | |
| qD (mg/g) | 26.06 | 23.09 | |
| R2 | 0.9359 | 0.9487 | |
Harkins?Jura | AHJ | −1667 | −769 | |
| BHJ | −0.8333 | 0.4615 | |
| R2 | 0.9889 | 0.9837 | |