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Ehsan Salehi

Ehsan Salehi

Academic rank: Professor
ORCID: https://orcid.org/0000-0003-4409-1242
Education: PhD.
ScopusId: 25643697300
Faculty: Engineering
Address: Arak University
Phone: 086-32625020

Research

Title
Kinetic‑based long‑time correlations for dialysis permeation through thin nanocomposite membrane adsorbents
Type
JournalPaper
Keywords
Membrane adsorbent · Mathematical model · Kinetic · Dialysis · Diffusion
Year
2015
Journal Journal of the Iranian Chemical Society
DOI
Researchers Ehsan Salehi ، Seyed Siavash Madaeni ، Reza Davarnejad

Abstract

Novel nanocomposite membrane adsorbents were synthesized and presented in our previous works. In this study, first-order-based (FOBM) and second-orderbased (SOBM) kinetic models were employed for predicting Cu(II) ion concentration of the receive phase in dialysis permeation through the membranes. The models could satisfactorily predict the quasi-equilibrium concentration, i.e., ion concentration in the liquid equilibrated with the adsorbed phase, at steady-state condition; however, with no satisfactory fit at transient region. SOBM model agreed better with the experimental data and highlighted a sharp increase in the ion uptake rate at the early permeation times. Computed partition and mass-transfer coefficients emphasized on the importance of morphology and chemistry on transport mechanism. Moreover, better insight into the phenomena involved in diffusive transport through the membrane adsorbents was obtained in the light of the modeling results.