where k1 is the rate constant of pseudo first-order model (min1),
k2 is the rate constant of pseudo second-order model (g/mg min).
The data of ln(qe qt) versus t of Eq. (4) were plotted and shown
in Fig. 10, and the values of k1 and qe were obtained from the slopes
and intercepts of the lines at different temperatures, respectively.
Straight lines were obtained by plotting (t/qt) against t, as shown in
Fig. 11, and the values of qe and k2 were determined from the slopes
and intercepts of the lines at different temperatures, respectively.
All the obtained kinetic parameters calculated from linear plots of
both models and correlation coefficient values were listed in
Table 4.