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Browsing by Subject "uranium"

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    • Article  

      Adsorption of hexavalent uranium on biomass by-product 

      Konstantinou, M.; Pashalidis, Ioannis (2007)
      The effectiveness of the uranium removal by olive cake from aqueous solutions has been demonstrated in batch type experiments under normal atmospheric conditions. The adsorption capacity has been evaluated by using both ...

    • Article  

      Adsorptive removal of U(VI) and Th(IV) from aqueous solutions using polymer-based electrospun PEO/PLLA fibrous membranes 

      Savva, Ioanna; Efstathiou, Maria; Krasia‐Christoforou, Theodora; Pashalidis, Ioannis (2013)
      Fibrous membranes based on poly(ethylene oxide) and poly(l-lactide) fabricated by electrospinning were evaluated for the first time as substrates for the adsorption of tetravalent thorium (Th(IV)) and hexavalent uranium ...

    • Article  

      Adsorptive removal of U(VI) and Th(IV) from aqueous solutions using polymer-based electrospun PEO/PLLA fibrous membranes 

      Savva, I.; Efstathiou, M.; Krasia-Christoforou, T.; Pashalidis, I. (2013)
      Fibrous membranes based on poly(ethylene oxide) and poly(l-lactide) fabricated by electrospinning were evaluated for the first time as substrates for the adsorption of tetravalent thorium (Th(IV)) and hexavalent uranium ...

    • Article  

      Alpha spectroscopic analysis of actinides (Th, U and Pu) after separation from aqueous solutions by cation-exchange and liquid extraction 

      Kiliari, T.; Pashalidis, Ioannis (2010)
      The radioactivity concentration of 236Pu, 232U and 228Th in aqueous samples has been determined by means of alpha spectroscopy after chemical separation and pre-concentration of the radionuclides by cation exchange and ...

    • Article  

      Competitive sorption of Cu(II), Eu(III) and U(VI) ions on dunite in aqueous solutions: A potentiometric study 

      Konstantinou, M.; Pashalidis, Ioannis (2010)
      The competitive sorption of Cu(II), Eu(III) and U(VI)) ions in aqueous solutions by dunite, has been investigated by potentiometry at pH 6, I = 0.1 M NaClO4 and 25°C. Numerical analysis of the experimental data supports ...

    • Article  

      Competitive sorption of Cu(II), Eu(III) and U(VI) ions on TiO2 in aqueous solutions-A potentiometric study 

      Konstantinou, M.; Pashalidis, Ioannis (2008)
      The competitive sorption of Cu(II), Eu(III) and U(VI) ions in aqueous solutions by TiO2, has been investigated by potentiometry at I = 0.1 M NaClO4, 25 °C and under atmospheric conditions. For Cu(II) ions the investigation ...

    • Article  

      Effective complex formation in the interaction of 1,2-dimethyl-3-hydroxypyrid-4-one (Deferiprone or L1) with uranium(VI) 

      Pashalidis, Ioannis; Kontoghiorghes, G. J. (1999)
      In an effort to develop new chelating agents for the decorporation of uranium and other actinides, the interaction of the clinically used 1,2-dimethyl-3-hydroxypyrid-4-one (Deferiprone or LI) with hexavalent uranium was ...

    • Article  

      Gamma radiation measurements and dose rates in commonly used building materials in Cyprus 

      Michael, F.; Parpottas, Yiannis; Tsertos, Haralambos (2010)
      A first comprehensive study is presented on radioactivity concentrations and dose rates in 87 commonly used materials, manufactured or imported in Cyprus, for building purposes. The natural radioactivity of 40K, 232Th, ...

    • Article  

      Radiometric determination of uranium in natural waters after enrichment and separation by cation-exchange and liquid-liquid extraction 

      Pashalidis, Ioannis; Tsertos, Haralambos (2004)
      Preconcentration of uranium from natural water samples using Chelex-100 cation-exchange resin, its selective extraction by tributylphosphate and electrodeposition on stainless steel discs is reported. The validity of the ...

    • Article  

      Radiometric determination of uranium in natural waters after enrichment and separation by cation-exchange and liquid-liquid extractionAAA 

      Pashalidis, Ioannis; Tsertos, Haralambos (2004)
      Preconcentration of uranium from natural water samples using Chelex-100 cation-exchange resin, its selective extraction by tributylphosphate and electrodeposition on stainless steel discs is reported. The validity of the ...

    • Article  

      Thorium determination in water samples by liquid scintillation counting after its separation by cloud point extraction 

      Constantinou, Eleni; Pashalidis, Ioannis (2011)
      The aim of this study is the separation and pre-concentration of thorium from aqueous solutions by cloud point extraction (CPE) and its the radiometric determination by liquid scintillation counting (LSC). For CPE, tributyl ...

    • Article  

      Uranium chemistry in stack solutions and leachates of phosphogypsum disposed at a coastal area in Cyprus 

      Lysandrou, Michaela; Pashalidis, Ioannis (2008)
      The effect of the matrix composition (main constituents) on the concentration and chemical behavior of uranium in phosphogypsum stack solutions and leachates has been investigated. Solid and aqueous samples were taken from ...

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