Table 4 Fitting parameters of Langmuir and Freundlich models at different temperatures
From: Removal of methylene blue by porous biochar obtained by KOH activation from bamboo biochar
Sample | T (K) | Langmuir | Freundlich | |||||
|---|---|---|---|---|---|---|---|---|
qm (mg/g) | kL (L/mg) | RL | R2 | kF (L/mg) | n | R2 | ||
KBBC-700 | 288 | 35.76 | 0.760 | 0.035 | 0.998 | 15.27 | 4.697 | 0.825 |
298 | 35.51 | 1.416 | 0.022 | 0.999 | 13.31 | 3.938 | 0.892 | |
308 | 33.34 | 1.617 | 0.017 | 0.999 | 14.16 | 4.523 | 0.849 | |
KBBC-800 | 288 | 40.97 | 1.282 | 0.031 | 0.999 | 15.31 | 3.901 | 0.700 |
298 | 37.89 | 2.135 | 0.018 | 0.999 | 15.00 | 4.026 | 0.750 | |
308 | 38.86 | 5.521 | 0.008 | 0.999 | 15.56 | 4.033 | 0.742 | |
KBBC-900 | 288 | 87.03 | 6.348 | 0.602 | 0.999 | 44.69 | 2.962 | 0.742 |
298 | 95.06 | 4.276 | 0.833 | 0.999 | 47.14 | 2.933 | 0.636 | |
308 | 87.184 | 4.588 | 0.807 | 0.999 | 55.02 | 2.432 | 0.465 | |