articleJournal of Molecular LiquidsFeb 7, 2023HYBRID OA

On validity, physical meaning, mechanism insights and regression of adsorption kinetic models

JPJoão P. Vareda

University of Coimbra

Indexed incrossref

Abstract

The study of adsorption kinetics is ubiquitous when reporting new adsorbent materials in the literature. The information these tests provide are no doubt valuable, but the conclusions drawn from adsorption kinetic models are many times contradictory between papers. In this work, the validity and meaning of common kinetic models are reviewed from literature dealing with their mathematical development, and are discussed. It is found that the most common models, the pseudo second order and pseudo first order models, have the ability to fit to kinetic data originating from systems limited by the surface reaction and by diffusion. Thus, these models are not associated with just one adsorption mechanism and further…

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296
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32.23
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100%
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Topics & keywords

Topics
Keywords
  • Nonlinear regression
  • Kinetic energy
  • Adsorption
  • Meaning (existential)
  • Diffusion
  • Regression analysis
  • Nonlinear system
  • Statistical physics
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