Table 5. Isotherm Parameters for the Adsorption of RY4 by PESHA.
isotherm | parameters | values |
---|---|---|
Langmuir | Qo (mg g–1) | 125.98 |
b (L mg–1) | 0.04 | |
RL | 0.17 | |
R2 | 0.994 | |
Freundlich | KF ((mol g–1)(mol L–1)−1/n) | 13.01 |
n | 2.07 | |
R2 | 0.992 | |
Tempkin | aT (L mg–1) | 90.51 |
bT | 0.44 | |
R2 | 0.993 | |
Dubinin–Radushkevich | Qs (mg g–1) | 84.29 |
β × 106 (mol J–1)2 | 8.59 | |
E (kJ mol–1) | 0.24 | |
R2 | 0.978 |