Table 1 Comparison of various parameters by different isotherms.
Isotherm Models | Equations | Parameters | Temperature (Kelvin) | |||
|---|---|---|---|---|---|---|
298 K | 308 K | 318 K | 328 K | |||
Langmuir | \(q_{e} = \frac{{q_{m}^{L} bC_{e} }}{{1 + bC_{e} }}\) | qm b R2 | 664.66 0.3141 0.9855 | 632.69 0.3173 0.9929 | 608.48 0.2871 0.9906 | 598.71 0.2634 0.9904 |
Freundlich | \(q_{e} = K_{F} C_{e}^{1/n}\) | KF 1/n R2 | 330.18 0.144 0.8227 | 327.52 0.133 0.7675 | 305.44 0.1395 0.8151 | 293.85 0.1396 0.8117 |
Sips | \(q_{e} = \frac{{q_{m}^{s} (K_{S} C_{e} )^{1/n} }}{{1 + (K_{S} C_{e} )^{1/n} }}\) | qm Ks 1/n R2 | 683.34 0.2982 0.4931 0.9934 | 637.31 0.2060 0.7445 0.9933 | 620.82 0.110 0.5451 0.9922 | 600.72 0.107 0.562 0.9913 |
Redlich-Peterson | \(q_{e} = \frac{{A_{RP} C_{e} }}{{1 + B_{RP} C_{e}^{g} }}\) | ARP BRP G R2 | 257.12 0.4515 0.9670 0.9901 | 202.32 0.3226 0.9984 0.9922 | 201.47 0.3711 0.9759 0.9912 | 175.75 0.3301 0.9786 0.9904 |
