Table 7 Deteremined LGM, FDM, and RPM constants and calculated parameters for AY36 dye utilizing different DRB-S dosage.
From: Adsorption of Acid Yellow 36 and direct blue 86 dyes to Delonix regia biochar-sulphur
Isotherm | Isotherm | DRB-S concentrations | ||||
|---|---|---|---|---|---|---|
Model | Parameters | 0.75 g/L | 1 g/L | 1.25 g/L | 1.5 g/L | 1.75 g/L |
LGM | qm (mg/g) | 270.27 | 192.31 | 144.93 | 142.86 | 120.48 |
KL x 103 | 0.2 | 0.3 | 0.5 | 0.5 | 0.6 | |
R2 | 0.9967 | 0.9973 | 0.9984 | 0.9989 | 0.9973 | |
FDM | KF | 0.53 | 0.52 | 0.50 | 0.47 | 0.46 |
n | 1.96 | 1.96 | 1.90 | 1.48 | 1.58 | |
R2 | 0.9850 | 0.9810 | 0.9680 | 0.9760 | 0.9990 | |
RPM | \(\:\beta\:\) | 0.45 | 0.50 | 0.43 | 0.46 | 0.46 |
A | 1.37 | 1.36 | 1.34 | 1.35 | 1.32 | |
R2 | 0.9775 | 0.9803 | 0.9598 | 0.9776 | 0.9848 | |
