Comparison Between Pseudo- first-order and Pseudo-second-order of Linear and Nonlinear Equations Adsorption Kinetic Models for the Removal of Amoxicillin (AMX) onto Hydrogel

  • Ola K. A. Alkadir Al-Nisour University College, Baghdad, Iraq
  • Zuhair I. Al-Mashhadani Al-Nisour University College, Baghdad, Iraq
  • Aseel M. Aljeboree Department of Chemistry, College of Sciences for Girls, University of Babylon, Hillah, Iraq
  • Ayad F. Alkaim Department of Chemistry, College of Sciences for Girls, University of Babylon, Hillah, Iraq
Keywords: Adsorption, Amoxicillin (AMX), Hydrogel, Kinetics model, Linear model, Nonlinear model, Pseudo-first order, Pseudo-second order.

Abstract

An experiment was conducted on kinetic model for the sorption of amoxicillin (AMX) by hydrogel. We studied the kinetics pseudo first-order (PFO) and kinetics pseudo second order (PSO) by linear and a nonlinear process. Nonlinear PFO and nonlinear PSO term evenly on prophesy that the qe value (qe(exp) =qe(cal) = 2.8999 and 2.947 mg/g) are at the same order comparative with linear PFO and PSO was applied straight line, the value of R2 is 0.9507 and 0.9707 and the qe value (qe(exp) =qe(cal) = 1.4420 and 2.4913 mg/g) at the same order. The sorption method was found to follow a both nonlinear kinetic model PFO and kinetic model PSO. Linear way was found to check only the hypothesis instead of verifying the model kinetic. Nonlinear regression way was found to be the more appropriate way to estimation the parameters kinetic model.
Published
2021-06-25