Solubility of U (VI) in chloride solutions. I. The stable oxides/hydroxides in NaCl systems, solubility products, hydrolysis constants and SIT coefficients

M Altmaier, E Yalçıntaş, X Gaona, V Neck… - The Journal of Chemical …, 2017 - Elsevier
The solubility of uranium (VI) is studied at T=(22±2)° C in carbonate-free 0.03–5.61 mol· kg
w− 1 NaCl solutions at pH m= 4–14.5 (pH m=− log [H+]). The solid phases metaschoepite …

[HTML][HTML] Fifteen years of radionuclide research at the KIT synchrotron source in the context of the nuclear waste disposal safety case

J Rothe, M Altmaier, R Dagan, K Dardenne… - Geosciences, 2019 - mdpi.com
For more than 120 years, systematic studies of X-ray interaction with matter have been the
basis for our understanding of materials—both of natural or man-made origin—and their …

Redox behavior and solubility of plutonium under alkaline, reducing conditions

A Tasi, X Gaona, D Fellhauer, M Böttle, J Rothe… - Radiochimica …, 2018 - degruyter.com
The solubility and redox behavior of hydrous Pu (IV) oxide was comprehensively
investigated by an experimental multi-method approach as a function of different redox …

Thermodynamic description of the plutonium–α-d-isosaccharinic acid system I: Solubility, complexation and redox behavior

A Tasi, X Gaona, D Fellhauer, M Böttle, J Rothe… - Applied …, 2018 - Elsevier
The impact of α-d-isosaccharinic acid (HISA), a degradation product of cellulose, on the
solubility and redox behavior of hydrous Pu (IV) oxide was investigated from undersaturation …

Thermodynamic description of the plutonium–α–d–isosaccharinic acid system ii: Formation of quaternary Ca (II)–Pu (IV)–OH–ISA complexes

A Tasi, X Gaona, D Fellhauer, M Böttle, J Rothe… - Applied …, 2018 - Elsevier
The quaternary system Ca (II)–Pu (III/IV)–OH–ISA was investigated in a series of solubility
experiments where equilibrium conditions were reached from undersaturation conditions …

Competitive reaction of neptunium (V) and uranium (VI) in potassium–sodium carbonate-rich aqueous media: Speciation study with a focus on high-resolution X-ray …

T Vitova, I Pidchenko, D Schild, T Prüßmann… - Inorganic …, 2019 - ACS Publications
Neptunium (V) and uranium (VI) are precipitated from an aqueous potassium–sodium-
containing carbonate-rich solution, and the solid phases are investigated. U/Np M4, 5-edge …

Technetium complexation with multidentate carboxylate-containing ligands: trends in redox and solubility phenomena

NA DiBlasi, K Dardenne, T Prüssmann… - Environmental …, 2023 - ACS Publications
The chemistry of technetium (t 1/2 (99Tc)= 2.11× 105 years) is of particular importance in the
context of nuclear waste disposal and historic contaminated sites. Polycarboxylate ligands …

[HTML][HTML] Solubility of Ca (II), Ni (II), Nd (III) and Pu (IV) in the presence of proxy ligands for the degradation of polyacrylonitrile in cementitious systems

PG Szabo, AG Tasi, X Gaona, R Polly, AC Maier… - Dalton …, 2022 - pubs.rsc.org
The solubility of Ca (OH) 2 (cr), β-Ni (OH) 2 (cr), Nd (OH) 3 (s) and PuO2 (ncr, hyd) was
investigated in cement porewater solutions containing glutarate (GTA), α-hydroxyisobutarate …

Thermodynamic description of Be (II) solubility and hydrolysis in acidic to hyperalkaline NaCl and KCl solutions

N Çevirim-Papaioannou, X Gaona, M Böttle… - Applied …, 2020 - Elsevier
The solubility of Be (II) is investigated in carbonate-free dilute to concentrated HCl–NaCl–
NaOH, KCl–KOH, NaOH and KOH solutions. Undersaturation experiments were performed …

[PDF][PDF] Actinide Sorption by Cementitious Materials

J Tits, E Wieland - 2018 - dora.lib4ri.ch
The Laboratory for Waste Management of the Nuclear Energy and Safety Research
Department of the Paul Scherrer Institut is performing work to develop and test models as …