Çelebi, O.Üzüm, ÇağrıShahwan, Talal.Erten, Hasan N2016-08-102016-08-102007Çelebi, O., Üzüm, Ç., Shahwan, T., and Erten, H. N. (2007). A radiotracer study of the adsorption behavior of aqueous Ba2+ ions on nanoparticles of zero-valent iron. Journal of Hazardous Materials, 148(3), 761-767. doi:10.1016/j.jhazmat.2007.06.1220304-38940304-3894http://doi.org/10.1016/j.jhazmat.2007.06.122https://hdl.handle.net/11147/2074Recently, 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.eninfo:eu-repo/semantics/openAccessAdsorptionBariumKinetic ModelsNano-Zero-Valent IronNanoparticlesArticle2-s2.0-3454824236210.1016/j.jhazmat.2007.06.122