Table 3.
Kinetic parameters for the removal of As(III) and As(V)
| Models | ||
|---|---|---|
| Pseudo-first-order | As(III) | As(V) |
| qe,exp (µg g−1) | 30.70 | 31.88 |
| qe,calc (µg g−1) | 32.55 | 28.28 |
| kf (min−1) | 0.056 | 0.045 |
| R2 | 0.991 | 0.992 |
| Pseudo-second-order | ||
| qe,calc (µg g−1) | 32.57 | 33.37 |
| h (µg g−1 min−1) | 3.250 | 3.190 |
| ks(g µg−1 min−1) | 0.0031 | 0.0029 |
| R2 | 0.997 | 0.999 |
| Intra particle diffusion | ||
| kint1(µg g−1 min−1/2) | 5.90 | 4.97 |
| C1(µg g−1) | -8.199 | -1.8055 |
| R2 | 1 | 0.999 |
| kint2 (µg g−1 min−1/2) | 0.591 | 0.905 |
| C2 (µg g−1) | 22.17 | 20.13 |
| R2 | 0.918 | 0.988 |
| Bangham | ||
| α | 0.539 | 1.342 |
| k0 (µg−1 dm−3) | 3.990 | 0.519 |
| R2 | 0.553 | 0.724 |