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Title: A radiotracer study of the adsorption behavior of aqueous Ba2+ ions on nanoparticles of zero-valent iron
Authors: Celebi, O.
Erten, H. N.
Shahwan, Talal
Uzum, C.
Issue Date: Oct-2007
Publisher: ResearchGate
Abstract: Recently, iron nanoparticles are increasingly being tested as adsorbents for various types of organic and inorganic pollutants. In this study, nanoparticles of zero-valent iron (NZVI) synthesized under atmospheric conditions were employed for the removal of Ba2+ ions in a concentration range 10−3 to 10−6 M. Throughout the study, 133Ba was used as a tracer to study the effects of time, concentration, and temperature. The obtained data was analyzed using various kinetic models and adsorption isotherms. Pseudo-second-order kinetics and Dubinin–Radushkevich isotherm model provided the best correlation with the obtained data. Observed thermodynamic parameters showed that the process is exothermic and hence enthalpy-driven.
Description: Celebi,Celebi:INVISTA H. N.,Erten:Bilkent University
Appears in Collections:Fulltext Publications

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