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Updated: Sep 24, 2025

Speciation and Bioavailability Measurements of Environmental Plutonium Using Diffusion in Thin Films
Published on: November 9, 2015
High effectiveness of pure polydopamine in extraction of uranium and plutonium from groundwater and seawater
Valery N Bliznyuk1,2, Kamila Kołacińska3, Alexander A Pud4
1Department of Environmental Engineering and Earth Sciences, Clemson University Clemson SC 29634-0919 USA vblizny@clemson.edu devol@clemson.edu.
Abstract:
Sorption properties of polydopamine (PDA) for uranium and plutonium from an aqueous environment are reported at three different pH values (2, 4 and 6.5-7). In addition to deionized (DI) water, artificial groundwater (GW) and seawater (SW) were used with U uptake close to 100% in each case. PDA polymer has been identified as a material with extremely high sorption capacity Q max ∼500 mg g-1 of the polymer at pH 6.5 and high selectivity for uranium. Similar high sorption properties are revealed for plutonium uptake. PDA-uranyl and PDA-plutonium interactions responsible for the observed adsorption processes have been addressed with a set of experimental techniques including FTIR spectroscopy, electron microscopy and cyclic voltammetry.
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