Table 3
Different adsorption correlations and fitting parameters for Glycyrrhiza Glabra (Ahmadi et al., 2012).
| Isotherm | Correlation | Parameters | ||
|---|---|---|---|---|
| Langmuir | q e = (q o K ad C e)/(1 + K ad C e) | R 2 | q o | K ad |
| 0.9964 | 51.02 | 0.27 | ||
| Freundlich |
|
R 2 | n | K f |
| 0.9891 | 0.8412 | 9.7946 | ||
| Temkin | q e = B ln K t + B ln C e | R 2 | k T | B |
| 0.8733 | 5.31 | 10.599 | ||
| Linear | q e = K H C e + c | R 2 | K H | C |
| 0.9307 | 6.0665 | 4.8148 | ||
Here, 
is the equilibrium adsorption rate, 
is the equilibrium concentration, 
is the adsorption capacity, 
is adsorption equilibrium constant, n and 
are Freundlich constants, B is the Temkin constant, 
is the equilibrium binding constant, K
H is the constant for linear isotherm, and c is the intercept of the linear isotherm.