Research Article
Removal of Lead (II) Ions from Aqueous Solutions onto Activated Carbon Derived from Waste Biomass
Table 1
Kinetic parameters for the adsorption of lead (II) ions onto the activated carbon (SAC2).
| Temperature (K) | 298.15 | 308.15 | 318.15 | Pseudo-first-order | | | | k 1 (min−1) | 0.023 | 0.020 | 0.017 | q 1 (mg g−1) | 73.55 | 79.84 | 92.29 | | 0.980 | 0.928 | 0.921 | Pseudo-second-order | | | | k 2 (g mg−1 min−1) | 11.6 × 10−4 | 10.96 × 10−4 | 9.26 × 10−4 | q 2 (mg g−1) | 238.1 | 250.0 | 263.2 | | 0.9995 | 0.9993 | 0.9994 | Intraparticle diffusion | | | | (mg g min−1/2) | 8.7429 | 9.9775 | 11.319 | | 153.74 | 152.85 | 154.53 | | 0.9390 | 0.8791 | 0.8659 |
|
|