Table 4 Langmuir and Freundlich parameters for Pb(II) adsorption onto biochars.
From: Adsorption characteristics of Pb(II) using biochar derived from spent mushroom substrate
Biochar | Langmuir | Freundlich | Temkin | ||||||
|---|---|---|---|---|---|---|---|---|---|
Qm (mg g−1) | KL (L mg−1) | R2 | KF (mg g−1)(mg L−1)1/n | n | R2 | A (L g−1) | bT (J mol−1) | R2 | |
PC300 | 294.86 | 0.760 | 0.963 | 133.75 | 5.47 | 0.717 | 21.04 | 117.78 | 0.881 |
PC500 | 293.67 | 1.015 | 0.927 | 137.58 | 5.74 | 0.692 | 34.64 | 71.52 | 0.790 |
PC700 | 326.74 | 2.315 | 0.947 | 165.90 | 3.83 | 0.938 | 40.99 | 60.44 | 0.945 |
SC300 | 294.86 | 0.760 | 0.963 | 133.75 | 5.47 | 0.717 | 23.04 | 60.02 | 0.844 |
SC500 | 332.63 | 0.582 | 0.926 | 135.28 | 4.66 | 0.700 | 11.18 | 47.22 | 0.823 |
SC700 | 398.06 | 0.470 | 0.982 | 130.57 | 2.77 | 0.956 | 5.74 | 31.41 | 0.977 |
