Adsorption
isotherms are significant for the industrial applications particularly for determining the best fitted
isotherm model.
For a better analysis of the fit of the model to the hygroscopicity, the experimental values of equilibrium moisture content and the values calculated of the sorption
isotherms of the model that best fit the experimental data were plotted (Figure 1).
The results obtained from the batch adsorption experiments conducted to study the effect of the initial dye concentration on dye adsorption were used to investigate the adsorption capacity of fly ash for reactive blue 25 dye through the well-known Langmuir and Freundlich adsorption
isotherms.
This variable can be calculated according to Equation 10 by plotting the sorption
isotherms as ln ([a.
Keywords: Pili nut, 4-Nitrophenol, Active carbon, Kinetics,
Isotherm, Thermodynamics
A straight line for Langmuir plot shows that adsorption follows Langmuir's
isotherm and [q.
vi) Langmuir and Freundlich
isotherm for native Bio-sorbent: The equilibrium data was used to develop an equation to correctly characterize the results.
The
isotherms of this class are bent on an axis of concentration.
Freundlich
isotherm [36], which is used widely for heterogeneous surface energy systems.
Freudlich and Langmuir
isotherms were also applied in this study.
2]), and fitting parameters obtained from regression analyses of the experimental data corresponding to the linear form of these
isotherms are reported in Table 2.
Utilizing above readings, the
isotherms for Langmuir and Freundlich models were plotted.
