Table 8 Determined LGM, FDM, and RPM constants and calculated parameters for DB86 dye using 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) | 36.2300 | 28.0900 | 23.6400 | 20.7000 | 19.5700 |
KL x 103 | 0.01430 | 0.0149 | 0.0143 | 0.0135 | 0.0149 | |
R2 | 0.97880 | 0.9981 | 0.9924 | 0.9961 | 0.9949 | |
FDM | KF | 18.300 | 16.700 | 15.400 | 14.500 | 15.300 |
n | 2.0430 | 1.7310 | 1.3710 | 1.1300 | 1.232 | |
R2 | 0.9630 | 0.982 | 0.9830 | 0.9910 | 0.994 | |
RPM | \(\:\beta\:\) | 0.4900 | 0.5100 | 0.5000 | 0.4900 | 0.5200 |
A | 0.7200 | 0.5500 | 0.3200 | 0.1200 | 0.2200 | |
R2 | 0.9608 | 0.9833 | 0.9830 | 0.9897 | 0.9966 | |
