Description of intraparticle diffusional sorption and desorption processes in ion-exchange sorbents

  • A. N. Gruzdeva
  • R. Kh. Khamizov
  • P. P. Zolotarev
Physicochemical Processes at the Interfaces


All general effects of ion exchange kinetics can be considered within the framework of a nonlinear phenomenological diffusional model. According to the model, the dependence of intraparticle diffusivity D on the concentration of sorbed (desorbed) ion a is unknown beforehand and, in general, it should be determined from the experiments by solving the so-called inverse problem. Hence, the work considered some important features of this model relating to the sorption–desorption processes.


Desorption Process Intra Particle Diffusion Sorp Tion Rigid Skeleton Describe Physico Chemical 
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© Pleiades Publishing, Ltd. 2015

Authors and Affiliations

  1. 1.Vernadsky Institute of Geochemistry and Analytical ChemistryMoscowRussia
  2. 2.Moscow State UniversityMoscowRussia

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