Radionuclide Removal from Aqueous Solutions Using Oxidized Carbon Fabrics

Ioannis Ioannidis; Ioannis Pashalidis; Batuhan Mulla; Gkerman Kotanidis; Kyriacos Ioannou; Georgios Constantinides; Nikolaos Kostoglou; Claus Rebholz

doi:10.3390/ma16237479

Materials (Dec 2023)

Radionuclide Removal from Aqueous Solutions Using Oxidized Carbon Fabrics

Ioannis Ioannidis,
Ioannis Pashalidis,
Batuhan Mulla,
Gkerman Kotanidis,
Kyriacos Ioannou,
Georgios Constantinides,
Nikolaos Kostoglou,
Claus Rebholz

Affiliations

Ioannis Ioannidis: Department of Chemistry, University of Cyprus, P.O. Box 20537, Nicosia 1678, Cyprus
Ioannis Pashalidis: Department of Chemistry, University of Cyprus, P.O. Box 20537, Nicosia 1678, Cyprus
Batuhan Mulla: Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1 Panepistimiou Avenue, Nicosia 2109, Cyprus
Gkerman Kotanidis: Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1 Panepistimiou Avenue, Nicosia 2109, Cyprus
Kyriacos Ioannou: Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1 Panepistimiou Avenue, Nicosia 2109, Cyprus
Georgios Constantinides: Department of Mechanical Engineering and Materials Science and Engineering, Cyprus University of Technology, Lemesos 3036, Cyprus
Nikolaos Kostoglou: Department of Materials Science, Montanuniversität Leoben, Franz Josef-Strasse 18, 8700 Leoben, Austria
Claus Rebholz: Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1 Panepistimiou Avenue, Nicosia 2109, Cyprus

DOI: https://doi.org/10.3390/ma16237479
Journal volume & issue: Vol. 16, no. 23
p. 7479

Abstract

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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 (25, 35 and 45 °C) under ambient atmospheric conditions. The experimental results indicated that both the pH and the fabric texture affected the adsorption rate and the relative removal efficiency, which was 70% and 100% for Am(III) and U(VI), respectively. The Kd (L/kg) values for U(VI) were generally found to be higher (2 10(Kd)10(Kd) d values decreased significantly due to the presence of competitive cations (e.g., Ca2+ and Fe3+) and complexing anions (CO32−) in the respective waters. Nevertheless, the removal efficiency was still remarkable (50% and 90% for Am(III) and U(VI), respectively), demonstrating that these materials could be attractive candidates for the treatment of radionuclide/actinide-contaminated waters.

Published in Materials

ISSN: 1996-1944 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering; Technology: Engineering (General). Civil engineering (General); Science: Natural history (General): Microscopy; Science: Physics: Descriptive and experimental mechanics
Website: http://www.mdpi.com/journal/materials/

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