Browsing by Author "Liatsou, Ioanna"
Now showing items 1-12 of 12
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Article
Adsorption of trivalent lanthanides by marine sediments
Liatsou, Ioanna; Efstathiou, Maria; Pashalidis, Ioannis (2015)The interaction of Eu(III) with two different types of marine sediments has been investigated as a function of various parameters (e.g. pH, [Eu(III)]o, I, humic acid) to evaluate their effect on the Eu(III) adsorption. The ...
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Article
Copper Binding by Activated Biochar Fibres Derived from Luffa cylindrica
Liatsou, Ioanna; Constantinou, P.; Pashalidis, Ioannis (2017)The adsorption of copper (Cu(II)) from aqueous solutions by activated Luffa cylindrica biochar fibres has been investigated by means of batch equilibrium experiments and FTIR spectroscopy. The effect of various physicochemical ...
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Article
Determination of radium by radon emanation after EDTA-mediated sample dissolution
Liatsou, Ioanna; Pashalidis, Ioannis (2015)The applicability of radon emanation to determine radium levels in (TE)NORM after EDTA-mediated sample dissolution has been investigated by means of a closed recirculating air loop radon monitoring system. Regarding radium ...
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Article
Effect of surface and textural characteristics on uranium adsorption by nanoporous titania
Paschalidou, Polyxeni; Liatsou, Ioanna; Pashalidis, Ioannis; Theocharis, Charis R. (2017)TiO2 solids of different grain size have been prepared by micelle-mediated hydrolysis and a solvothermal method, and characterized by SEM microscopy and N2 adsorption. The effect of the BET surface area/pore volume and the ...
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Article
The effect of surface properties on the uranium adsorption by mesoporous ceria
Paschalidou, Polyxeni; Liatsou, Ioanna; Pashalidis, Ioannis; Theocharis, Charis R. (2018)CeO2 solids of different surface areas have been prepared by a sol–gel method using Triton X-100. The samples have then characterized by N2 adsorption, XRD, SEM microscopy and FTIR spectroscopy. Furthermore, the effect of ...
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Conference Object
The effect of surface properties on the uranium adsorption by mesoporous ceria
Paschalidou, Polyxeni; Liatsou, Ioanna; Pashalidis, Ioannis; Theocharis, Charis R. (2018)CeO2 solids of different surface areas have been prepared by a sol–gel method using Triton X-100. The samples have then characterized by N2 adsorption, XRD, SEM microscopy and FTIR spectroscopy. Furthermore, the effect of ...
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Article
Radium concentration in uranium-bearing rocks and minerals by radon emanation after acidic sample dissolution
Liatsou, Ioanna; Pashalidis, Ioannis (2016)The applicability of a radon emanation system to radium determination in NORM materials after acidic sample dissolution has been investigated by means of a closed recirculating air loop radon emanation system. After system ...
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Article
Surface characterization of oxidized biochar fibers derived from Luffa Cylindrica and lanthanide binding
Liatsou, Ioanna; Pashalidis, Ioannis; Oezaslan, M.; Dosche, C. (2017)In the last years, biochar fibers derived from Luffa Cylindrica have emerged as promising adsorbent material for harmful heavy metal ions. Based on their unique vascular structure, they exhibit a large surface area and ...
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Article
Thorium adsorption by oxidized biochar fibres derived from Luffa cylindrica sponges
Liatsou, Ioanna; Christodoulou, Eleni; Pashalidis, Ioannis (2018)The present study deals with the preparation of oxidized biochar fibres derived from Luffa cylindrica sponges and the subsequent adsorption of Th(IV). The adsorption experiments were performed by batch-type experiments and ...
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Article
Triggering selective uranium separation from aqueous solutions by using salophen-modified biochar fibers
Liatsou, Ioanna; Pashalidis, Ioannis; Nicolaides, Athanassios (2018)Salophen modified biochar fibers derived from Luffa cylindrica sponges were prepared and subsequently studied as a potential U(VI) adsorbent by batch-type experiments. The material was characterized by spectroscopic and ...
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Article
U(VI) adsorption by biochar fiber–MnO2 composites
Ioannou, Katerina; Hadjiyiannis, Pantelis; Liatsou, Ioanna; Pashalidis, Ioannis (2019)The removal of U(VI) by biochar fibers from aqueous solutions has been investigated prior and after MnO2 surface-deposition. The removal efficiency has been studied as a function of pH, U(VI) concentration, ionic strength, ...
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Article
Uranium binding by biochar fibres derived from Luffa cylindrica after controlled surface oxidation
Liatsou, Ioanna; Michail, G.; Demetriou, Maria; Pashalidis, Ioannis (2017)Controlled surface modification of biochar fibres derived from Luffa cylindrica sponges has been carried out by nitric acid and the degree of oxidation could be controlled by changing the acid concentration or the reaction ...