A Combined Study of Tc Redox Speciation in Complex Aqueous Systems: Wet-Chemistry, Tc K-/L3-Edge X-ray Absorption Fine Structure, and Ab Initio Calculations
K Dardenne, S Duckworth, X Gaona, R Polly… - Inorganic …, 2021 - ACS Publications
The combination of wet-chemistry experiments (measurements of pH, E h, and [Tc]) and
advanced spectroscopic techniques (K-and L3-edge X-ray absorption fine structure …
advanced spectroscopic techniques (K-and L3-edge X-ray absorption fine structure …
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 …
NaOH, KCl–KOH, NaOH and KOH solutions. Undersaturation experiments were performed …
Redox chemistry, solubility and hydrolysis of Re in reducing aquatic systems. Thermodynamic description and comparison with Tc
S Duckworth, X Gaona, D Castaño, S Park… - Applied …, 2021 - Elsevier
The aqueous solution chemistry of rhenium was investigated in acidic to hyperalkaline
reducing systems buffered by Sn (II) and Na 2 S 2 O 4. Oversaturation experiments with …
reducing systems buffered by Sn (II) and Na 2 S 2 O 4. Oversaturation experiments with …
Thermodynamic description of Tc (IV) solubility and carbonate complexation in alkaline NaHCO 3–Na 2 CO 3–NaCl systems
A Baumann, E Yalçıntaş, X Gaona, R Polly… - Dalton …, 2018 - pubs.rsc.org
The solubility of 99Tc (IV) was investigated in dilute to concentrated carbonate solutions
(0.01 M≤ Ctot≤ 1.0 M, with Ctot=[HCO3−]+[CO32−]) under systematic variation of ionic …
(0.01 M≤ Ctot≤ 1.0 M, with Ctot=[HCO3−]+[CO32−]) under systematic variation of ionic …
Solubility of U (VI) in chloride solutions. II. The stable oxides/hydroxides in alkaline KCl solutions: Thermodynamic description and relevance in cementitious systems
The solubility of U (VI) is investigated from undersaturation conditions in 0.1, 0.51, 1.03, 3.31
and 4.58 m KCl–KOH solutions at pH m= 7.5–14.6 (with pH m=–log [H+] in molal units). All …
and 4.58 m KCl–KOH solutions at pH m= 7.5–14.6 (with pH m=–log [H+] in molal units). All …
Impact of sulfate on the solubility of Tc (IV) in acidic to hyperalkaline aqueous reducing systems
SB Duckworth, X Gaona, A Baumann… - Radiochimica …, 2021 - degruyter.com
The solubility of 99Tc (IV) was investigated from undersaturation conditions in NaCl–
Na2SO4 (0.3 M≤ I≤ 5.0 M), MgCl2–MgSO4 (I= 13.5 M) and CaCl2–CaSO4 (I= 13.5 M) …
Na2SO4 (0.3 M≤ I≤ 5.0 M), MgCl2–MgSO4 (I= 13.5 M) and CaCl2–CaSO4 (I= 13.5 M) …
Sorption of Tc (IV) in Saline Solutions-I. Sorption on MX-80 and Granite in Ca-Na-Cl Solutions
S Nagasaki, Z Zheng, J Liu, J Yang… - Journal of Nuclear Fuel …, 2024 - koreascience.kr
Technetium-99 is identified as an element of interest for the safety assessment of a deep
geological repository for used nuclear fuel. The sorption behavior of Tc (IV) onto MX-80 and …
geological repository for used nuclear fuel. The sorption behavior of Tc (IV) onto MX-80 and …
Redox chemistry, solubility and hydrolysis of uranium in dilute to concentrated salt systems
N Cevirim-Papaioannou - 2018 - inis.iaea.org
[en] Uranium is the main element present in spent nuclear fuel and accordingly contributes
with the largest mass inventory to the nuclear waste. Although a vast number of studies have …
with the largest mass inventory to the nuclear waste. Although a vast number of studies have …
Impact of nitrate on the redox chemistry and solubility of Tc (IV) in alkaline, dilute to concentrated aqueous NaCl solutions
A Baumann, X Gaona, E Yalçıntaş, K Dardenne… - Applied …, 2018 - Elsevier
The impact of nitrate on the redox behaviour and solubility of 99 Tc (IV) was investigated in
0.1–5.0 M NaCl–NaNO 3–NaOH solutions with 0.1 M≤[NO 3−]≤ 1.0 M and 8.5≤ pH m≤ …
0.1–5.0 M NaCl–NaNO 3–NaOH solutions with 0.1 M≤[NO 3−]≤ 1.0 M and 8.5≤ pH m≤ …
[PDF][PDF] Solubility and hydrolysis of Be (II) in dilute to concentrated NaCl and KCl solutions
X Gaona, N Cevirim-Papaioannou… - Deliverable nD4. 13 …, 2018 - researchgate.net
The solubility of Be (II) was investigated in dilute to concentrated HCl–NaCl–NaOH, KCl–
KOH, NaOH and KOH solutions under Ar atmosphere at T=(22±2) C. Experiments were …
KOH, NaOH and KOH solutions under Ar atmosphere at T=(22±2) C. Experiments were …