Browsing Τμήμα Χημείας / Department of Chemistry by Author "5eab6a4c-23ab-4d62-b50d-ca7ee3334a34"
Now showing items 1-10 of 10
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Actinide Ion (Americium-241 and Uranium-232) Interaction with Hybrid Silica–Hyperbranched Poly(ethylene imine) Nanoparticles and Xerogels
Ioannidis, Ioannis; Pashalidis, Ioannis; Arkas, Michael (MDPI, 2023)The binding of actinide ions (Am(III) and U(VI)) in aqueous solutions by hybrid silica–hyperbranched poly(ethylene imine) nanoparticles (NPs) and xerogels (XGs) has been studied by means of batch experiments at different ...
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Article
The effect of temperature on the U-232 and Am-241 adsorption by PN6 microplastics in aqueous solutions
Ioannidis, Ioannis; Anastopoulos, Ioannis; Pashalidis, Ioannis (Global NEST, 2023)The effect of temperature on the adsorption of U-232 and Am-241 by PN6 has been investigated in laboratory and environmental water samples (e.g. seawater and waste water) in the picomolar concentration range. Generally, ...
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Europium removal from aqueous solutions by oxidized biochar prepared from waste palm tree fronds
Georgiou, Efthalia; Ioannidis, Ioannis; Pashalidis, Ioannis; Viet, Dang Duc; Tsubota, Toshiki; Kalderis, Dimitrios (Elsevier, 2023)Palm oil is a product of major economic importance worldwide however, palm tree cultivation generates large quantities of palm fronds as waste. In this work, the sorption of Eu3+ from aqueous solutions by oxidized biochar ...
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Article
Microplastics and disposable face masks as “Trojan Horse” for radionuclides pollution in water bodies – A review with emphasis on the involved interactions
Ioannidis, Ioannis; Kinigopoulou, Vasiliki; Giannakoudakis, Dimitrios A.; Arkas, Michael; Anastopoulos, Ioannis; Triantafyllidis, Konstantinos S.; Pashalidis, Ioannis (Elsevier, 2023)This review article focuses on the interaction of radionuclides (americium-241, uranium-232, radium-226, neptunium-237, cesium-137, iodine-125, strontium-90, thorium-234, and potassium-40) with different microplastics ...
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Article
Pine needle–derived biochar adsorbents for removal of Sm(III) and competitive toxic metals from model aqueous matrices
Philippou, Katerina; Evangelou, Christina; Ioannidis, Ioannis; Pashalidis, Ioannis (Elsevier, 2023)Pine needle–derived biochars have been prepared and investigated as adsorbent materials for the removal of trivalent samarium (Sm(III)) from aqueous systems. The biochars, which were previously oxidized and magnetized), ...
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Article
Radioactivity/Radionuclide (U-232 and Am-241) Removal from Waters by Polyurea-Crosslinked Alginate Aerogels in the Sub-Picomolar Concentration Range
Ioannidis, Ioannis; Pashalidis, Ioannis; Raptopoulos, Grigorios; Paraskevopoulou, Patrina (MDPI, 2023)The removal of radionuclide/radioactivity from laboratory and environmental water samples under ambient conditions was investigated via batch-type experiments using polyurea-crosslinked calcium alginate (X-alginate) aerogels. ...
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Radiometric analysis of potassium, radium and uranium levels in Brazil nuts
Ioannidis, Ioannis; Paschalidou, Polyxeni; Sarrou, Iacovos; Pashalidis, Ioannis (Springer, 2023)The paper describes an alternative approach for the determination of uranium, radium-226 and potassium levels in Brazil nuts. Potassium analysis was performed by a NaI detector using 1-gram of nut’s ashes, radium analysis ...
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Article
Radionuclide removal from aqueous solutions using Oxidized Carbon Fabrics
Ioannidis, Ioannis; Pashalidis, Ioannis; Mulla, Batuhan; Kotanidis, Gkerman; Ioannou, Kyriacos; Constantinides, Georgios; Kostoglou, Nikolaos; Rebholz, Claus (MDPI, 2023)The adsorption of actinide ions (Am(III) and U(VI)) from aqueous solutions using pristine and oxidized carbon fabrics was investigated by means of batch experiments at different pH values (pH 4, 7 and 9) and temperatures ...
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Uranium desorption from microplastic surfaces
Ioannidis, Ioannis; Anastopoulos, Ioannis; Pashalidis, Ioannis (Springer, 2023)The desorption of uranium from microplastic surfaces has been investigated as a function of pH in aqueous solutions under ambient conditions. In addition, the effect of complexing ligands (e.g. EDTA) on the desorption from ...
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Article
Uranium recovery from phosphate rocks/minerals – A comprehensive review
Michael, Andria; Varnava, Nektaria; Ioannidis, Ioannis; Pashalidis, Ioannis (Elsevier, 2024)Although the use of nuclear energy is still viewed with caution due to various problems associated, such as the safe operation of 'aging' nuclear plants and the final disposal of nuclear waste, many countries in Europe are ...