Research Article
Effective Remediation of Lead Ions from Aqueous Solution by Chemically Carbonized Rubber Wood Sawdust: Equilibrium, Kinetics, and Thermodynamic Study
Table 2
A pseudo-first-order, pseudo-second-order, and intraparticle diffusion model parameter for adsorption of lead ion onto CCRWSD.
| Constants | Initial concentration (mg/L) | 5 | 10 | 15 | 20 |
| (mg/g) | 9.82 | 19.31 | 28.05 | 35.8 | Pseudo-first order | | | | | (mg/g) | 7.58 | 16.52 | 27.29 | 31.87 | (min−1) | 0.0283 | 0.0377 | 0.0301 | 0.0458 | | 0.991 | 0.995 | 0.984 | 0.990 | Pseudo-second order | | | | | (mg/g) | 10.12 | 2.02 | 3.26 | 37.45 | (g mg−1 min−1) | 0.016 | 0.600 | 0.199 | 0.004 | | 0.998 | 0.995 | 0.988 | 0.998 | Intraparticle diffusion | | | | | (g mg−1 min−1) | 0.709 | 1.488 | 2.294 | 2.763 | | 0.873 | 0.895 | 0.926 | 0.872 |
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