Table 4.
P | |||
---|---|---|---|
T (K) | 298 | 303 | 308 |
Langmuir model | |||
qm (mg/g) a | 99.81 | 101.67 | 103.44 |
KL (L/g) b | 20.828 | 26.691 | 34.575 |
R2 c | 0.999 | 0.998 | 0.996 |
χ2 d | 0.070 | 0.097 | 0.117 |
Freundlich model | |||
KF (L/g) e | 97.12 | 99.69 | 102.11 |
1/nF f | 0.116 | 0.096 | 0.079 |
R2 c | 0.930 | 0.926 | 0.966 |
χ2 d | 3.991 | 3.196 | 1.083 |
Dubinin-Radushkevich model | |||
qm (mg/g) a | 98.14 | 100.44 | 102.55 |
E (kJ/mol) g | 7.030 | 7.954 | 9.060 |
R2 c | 0.998 | 0.996 | 0.998 |
χ2 d | 0.116 | 0.166 | 0.054 |
a qm—the maximum sorption capacity; b KL—the Langmuir constant; c R2—correlation coefficient; d χ2—chi-square test; e KF—the Freundlich constant; f nF—empirical constant; g E—sorption energy.