Table 4.
Pseudo-first order, pseudo-second-order, Elovich, external mass transfer, Boyd, and intraparticle diffusion parameters for IC and 2,6-DCPIP adsorption onto CTAB-modified POF.
| Kinetic models | Constants | IC | 2,6-DCPIP |
|---|---|---|---|
| Pseudo-first-order model | q exp(µmol · g−1) | 222.107 | 102.306 |
| q e(µmol · g−1) | 83.414 | 71.385 | |
| K 1ads(min−1) | 0.014 | 0.030 | |
| R 2 | 0.971 | 0.907 | |
|
| |||
| Pseudo-second-order model | q exp(µmol · g−1) | 222.107 | 102.306 |
| q e(µmol · g−1) | 234.192 | 112.233 | |
| K 2ads(g · µmol−1 · min−1) | 0.002 | 0.004 | |
| h (μmol·g−1·min−1) | 100.604 | 45.683 | |
| t 1/2 (min) | 2.328 | 2.457 | |
| R 2 | 0.999 | 0.998 | |
|
| |||
| Elovich model | α (mmol·g−1·min−1) | 2.860 | 0.315 |
| β (g·μmol−1) | 0.038 | 0.062 | |
| R 2 | 0.974 | 0.936 | |
|
| |||
| External mass transfer | β L S × 103(min−1) | 3.370 | 1.940 |
| R 2 | 0.729 | 0.624 | |
|
| |||
| Boyd model | B(min−1) | 0.073 | 0.162 |
| D i × 109(cm2/s) | 3.070 | 6.843 | |
| R 2 | 0.971 | 0.906 | |
|
| |||
| Intraparticle diffusion model | K ip1 (μmol·g−1·min−1/2) | 18.322 | 13.739 |
| K ip2 (μmol·g−1·min−1/2) | 0.974 | 2.298 | |
| C 1 (μmol·g−1) | 121.445 | 38.601 | |
| C 2 (μmol·g−1) | 217.767 | 90.936 | |
| R 1 2 | 0.953 | 0.953 | |
| R 2 2 | 0.310 | 0.723 | |