the pseudo-second order kinetic equation is suitable to model
the adsorption curve of glyphosate on resin D301.
The correlation coefficient value of the pseudo-first order
kinetic equation is little lower than the pseudo-second order
kinetic equation, indicating that this adsorption is mainly
controlled by the surface control, rather than the adsorbate
diffusion. The adsorption rate constant of pseudo-second
order in Table 3 shows that its rate constant of adsorption increases
with the increasing temperature, which reveals that this
adsorption may be controlled by chemical adsorption.
3.4. Calculation and analysis of the apparent activation energy
The linear form of Arrhenius equation (Wang et al., 2010) can
be expressed by the following equation