Table 1 Pseudo first order, Pseudo second order, and Elovich models parameters for adsorption of cr(VI) onto ZVCo-MIL-88 A(Fe)@β-CD.
Kinetic models and parameters | Concentration (mg/L) | ||||
|---|---|---|---|---|---|
50 | 100 | 200 | 300 | ||
Qe, Exp (mg/g) | 92.06 | 164.96 | 276.34 | 360.31 | |
Pseudo first order | |||||
Qe, Cal (mg/g) | 120.48 | 222.22 | 316.66 | 488.23 | |
k1 (min− 1) | 0.050 | 0.049 | 0.044 | 0.046 | |
R2 | 0.978 | 0.976 | 0.966 | 0.951 | |
Pseudo second order | |||||
Qe, Cal (mg/g) | 93.14 | 168.59 | 297.04 | 401.61 | |
k2 (g/mg min) | 6.8 × 10− 4 | 3.7 × 10− 4 | 1.4 × 10− 4 | 8.6 × 10− 4 | |
R2 | 0.986 | 0.981 | 0.983 | 0.987 | |
Elovich | |||||
α (mg/g min) | 29.71 | 56.33 | 123.38 | 167.00 | |
β (g/mg) | 4.4 × 10− 2 | 2.4 × 10− 2 | 1.4 × 10− 2 | 1.1 × 10− 2 | |
R2 | 0.945 | 0.924 | 0.887 | 0.887 | |
