Table 4 Parameters for different isotherm of As (III) adsorption with biochars
From: Specifically designed magnetic biochar from waste wood for arsenic removal
Model | Parameters | PB | 1FeC | 1Fe2MnC |
|---|---|---|---|---|
Langmuir | b (mg g−1) | 0.18 | 1.0 | 0.90 |
a (L mg−1) | 2.32 | 2.73 | 12.5 | |
R2 | 0.990 | 0.992 | 0.980 | |
Freundlich | K (mg g−1) | 0.11 | 0.61 | 1.30 |
n | 3.19 | 2.57 | 3.46 | |
R2 | 0.874 | 0.871 | 0.940 | |
Temkin | B (J mol−1) | 30 | 180 | 160 |
KT (J g−1) | 40 | 42 | 159 | |
R2 | 0.953 | 0.955 | 0.975 |