Applying Linear Forms of Pseudo-Second-Order Kinetic Model for Feasibly Identifying Errors in the Initial Periods of Time-Dependent Adsorption Datasets

Initial periods of adsorption kinetics play an important role in estimating the initial rate and constant process. Several processes rapidly occur, experimental data under can contain potential errors. The pseudo-second-order (PSO) kinetic model has been popularly applied field adsorption. use nonlinear optimization method to obtain parameters PSO minimize error functions during modelling compared linear method. However, limitations that it cannot directly recognize errors points time-dependent adsorption, especially periods. In this study, for first time, different types (Types 1–6) are discover Results indicated fitting using its equations 2–5) is really helpful identifying (doubtful) from kinetics. imprecise lead low adjusted R2 (adj-R2), high reduced χ2 (red-χ2), Bayesian information criterion (BIC) values. After removing these points, were adequately fitted with model. Statistical analyses demonstrated must be used because red-χ2 BIC lower than Type 1 extensively literature very adj-R2 value (0.9999) excellent points. application should limited not identified by type. For comparison, other models (i.e., pseudo-first-order, pseudo-nth-order, Avrami, Elovich) applied. result forms fault detected study.