Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/6115
Title: Sorption isotherms and characteristics of U(VI) ion onto composite adsorbent
Authors: Donat, Ramazan
Güy, Nuray
Çetişli, Halil
Keywords: Adsorption
Composite adsorbent
Gumalgin cromatic
Isotherms
Uranium
Publisher: Taylor and Francis Inc.
Abstract: The adsorption of U(VI) from aqueous solutions onto composite adsorbent (Gumalgin Cromatic) has been studied using a batch adsorber. The parameters that affect the U(VI) sorption, such as contact time, solution pH, initial U(VI) concentration, and temperature, have been investigated and optimized conditions determined. The adsorption patterns of metal ions on composite adsorbent followed the Langmuir, Freundlich and Dubinin-Radushkevich isotherms. The Freundlich, Langmuir, and Dubinin-Radushkevich (D-R) models have been applied and the data correlate well with Langmuir model and that the sorption is physical in nature (the sorption energy Eads 1/4 14.45 kJ/mol). Thermodynamic parameters (?H° ads = -129.55 kJ/mol, ?S° ads = -357 J/mol K, ?G° ads (298.15 K) = -23.11 kJ/mol) showed the exothermic heat of adsorption and the feasibility of the process. The results suggested that the composite adsorbent is suitable as a sorbent material for recovery and biosorption/adsorption of uranium ions from aqueous solutions. © 2011 Desalination Publications. All rights reserved.
URI: https://hdl.handle.net/11499/6115
https://doi.org/10.5004/dwt.2011.1979
ISSN: 1944-3994
Appears in Collections:Fen-Edebiyat Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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