The best fit equations of linear and non-linear forms of the two widely used kinetic models, namely pseudo-first-order (PFO) and pseudo-second-order (PSO) equations, were compared in this study. The experimental kinetics of [AuCl₄]⁻removal by p-hydroxybenzoate intercalated Mg/Al-hydrotalcite was used for this research. R² coefficient was employed as error analysis methods to determine the best-fitting equations. The results show that the non-linear form was better at best-fitting than the linear form. The experimental kinetics may have been distorted by linearization of the linear kinetic equations, and thus, the non-linear forms of kinetic equations should be primarily used to obtain the adsorption parameters.

本研究比较了两种广泛使用的动力学模型的线性和非线性形式的最佳拟合方程，即伪一级（PFO）和伪二级（PSO）方程。[AuCl 4 ] -对羟基苯甲酸盐插层Mg/Al-水滑石去除[AuCl ₄ ] ^-的实验动力学用于该研究。采用R ²系数作为误差分析方法来确定最佳拟合方程。结果表明，非线性形式在最佳拟合方面优于线性形式。实验动力学可能已经被线性动力学方程的线性化所扭曲，因此，动力学方程的非线性形式应该主要用于获得吸附参数。