Table 1 Kinetic parameters of the pseudo second-order model for adsorption of heavy metals onto BC in landfill leachate
Adsorbate | BC dosage | Pseudo second-order kinetic for PWB | Pseudo second-order kinetic for CWB | ||||||
|---|---|---|---|---|---|---|---|---|---|
qe(cal.) (mg g− 1) | k2p | R2 | SSE | qe(cal.) (mg g− 1) | k2p | R2 | SSE | ||
Pb | 0.05 | 0.45 | 0.12 | 0.999 | 0.000 | 0.36 | 0.15 | 0.999 | 0.000 |
0.1 | 0.44 | 0.12 | 0.999 | 0.000 | 0.35 | 0.15 | 0.999 | 0.000 | |
0.25 | 0.34 | 0.15 | 0.999 | 0.000 | 0.27 | 0.20 | 0.999 | 0.000 | |
0.5 | 0.27 | 0.19 | 0.999 | 0.000 | 0.19 | 0.28 | 0.999 | 0.000 | |
0.75 | 0.21 | 0.24 | 0.999 | 0.000 | 0.15 | 0.36 | 0.999 | 0.000 | |
1 | 0.17 | 0.31 | 0.999 | 0.000 | 0.12 | 0.47 | 0.999 | 0.000 | |
1.5 | 0.12 | 0.43 | 0.999 | 0.000 | 0.09 | 0.63 | 0.999 | 0.000 | |
2 | 0.09 | 0.56 | 0.999 | 0.000 | 0.07 | 0.79 | 0.999 | 0.000 | |
3 | 0.07 | 0.81 | 0.999 | 0.000 | 0.05 | 1.10 | 0.999 | 0.000 | |
5 | 0.04 | 1.39 | 0.999 | 0.000 | 0.03 | 1.75 | 0.999 | 0.000 | |
Mn | 0.05 | 1.62 | 0.03 | 0.999 | 0.001 | 1.40 | 0.04 | 0.999 | 0.001 |
0.1 | 1.54 | 0.03 | 0.999 | 0.000 | 1.40 | 0.04 | 0.999 | 0.001 | |
0.25 | 1.10 | 0.05 | 0.999 | 0.000 | 0.97 | 0.06 | 0.999 | 0.000 | |
0.5 | 0.85 | 0.06 | 0.999 | 0.000 | 0.73 | 0.07 | 0.999 | 0.000 | |
0.75 | 0.69 | 0.07 | 0.999 | 0.000 | 0.58 | 0.09 | 0.999 | 0.000 | |
1 | 0.56 | 0.09 | 0.999 | 0.000 | 0.47 | 0.12 | 0.999 | 0.000 | |
1.5 | 0.43 | 0.12 | 0.999 | 0.000 | 0.36 | 0.16 | 0.999 | 0.000 | |
2 | 0.34 | 0.15 | 0.999 | 0.000 | 0.28 | 0.20 | 0.999 | 0.000 | |
3 | 0.24 | 0.22 | 0.999 | 0.000 | 0.20 | 0.28 | 0.999 | 0.000 | |
5 | 0.15 | 0.35 | 0.999 | 0.000 | 0.13 | 0.45 | 0.999 | 0.000 | |
Cu | 0.05 | 0.40 | 0.13 | 0.999 | 0.000 | 0.46 | 0.11 | 0.999 | 0.000 |
0.1 | 0.39 | 0.13 | 0.999 | 0.000 | 0.43 | 0.12 | 0.999 | 0.000 | |
0.25 | 0.33 | 0.16 | 0.999 | 0.000 | 0.32 | 0.17 | 0.999 | 0.000 | |
0.5 | 0.26 | 0.20 | 0.999 | 0.000 | 0.24 | 0.23 | 0.999 | 0.000 | |
0.75 | 0.22 | 0.24 | 0.999 | 0.000 | 0.18 | 0.29 | 0.999 | 0.000 | |
1 | 0.17 | 0.29 | 0.999 | 0.000 | 0.16 | 0.37 | 0.999 | 0.000 | |
1.5 | 0.13 | 0.38 | 0.999 | 0.000 | 0.12 | 0.49 | 0.999 | 0.000 | |
2 | 0.11 | 0.49 | 0.999 | 0.000 | 0.09 | 0.62 | 0.999 | 0.000 | |
3 | 0.08 | 0.70 | 0.999 | 0.000 | 0.07 | 0.87 | 0.999 | 0.000 | |
5 | 0.05 | 1.09 | 0.999 | 0.000 | 0.04 | 1.38 | 0.999 | 0.000 | |