Isotherm models | Parameters | Temperature (K) | |||
343 | 353 | 363 | 373 | ||
Freundlich | KF (L/mg) | 0.096 | 0.241 | 0.222 | 0.335 |
n | −0.404 | −1.014 | −1.193 | −2.558 | |
R2 | 0.841 | 0.745 | 0.776 | 0.651 | |
Langmuir | Ka (L/mg) | −2.024 | −3.230 | −4.354 | −7.669 |
qm (mg/g) | 0.046 | 0.095 | 0.148 | 0.211 | |
R2 | 0.632 | 0.642 | 0.722 | 0.740 | |
Temkin | KT (L/mg) | 0.924 | 0.762 | 0.614 | 0.213 |
B1 | −0.649 | −0.468 | -0.386 | −0.219 | |
R2 | 0.988 | 0.959 | 0.940 | 0.829 | |
Dubinin and Radushkevich | β | -2 × 10−7 | −7 × 10−8 | −4 × 10−8 | −9 × 10−9 |
Qm (mg/g) | 0.045 | 0.161 | 0.254 | 0.433 | |
R2 | 0.761 | 0.640 | 0.618 | 0.432 |