Recent advances in aqueous actinide chemistry and thermodynamics

M Altmaier, X Gaona, T Fanghänel - Chemical reviews, 2013‏ - ACS Publications
This Review presents an overview of recent advances in aqueous actinide chemistry and
thermodynamics. It addresses actinides from thorium to curium and covers three main areas …

A review of the retention mechanisms of redox-sensitive radionuclides in multi-barrier systems

B Ma, L Charlet, A Fernandez-Martinez, M Kang… - Applied …, 2019‏ - Elsevier
The deep geological disposal concept is widely accepted by the scientific community for the
storage of high activity level nuclear waste. It uses a multi-barrier system to isolate …

Binding mechanisms of radionuclides to cement

NDM Evans - Cement and concrete research, 2008‏ - Elsevier
Radionuclide solubility is one of the factors that can determine the 'source term'for potential
migration to the far field. Hence, the mechanisms of immobilisation of radionuclides in …

Measurement and modeling of the surface potential evolution of hydrated cement pastes as a function of degradation

I Pointeau, P Reiller, N Macé, C Landesman… - Journal of colloid and …, 2006‏ - Elsevier
Hydrated cement pastes (HCP) have a high affinity with a lot of (radio) toxic products and
can be used as waste confining materials. In cementitious media, elements are removed …

[HTML][HTML] Density functional theory study of the crystal structure and infrared spectrum of a synthetized ettringite mineral

F Colmenero, AM Fernández, O Almendros-Ginestà… - Minerals, 2024‏ - mdpi.com
One of the most important hydration phases of Portland cement is ettringite, a calcium sulfo-
aluminate mineral (C a 6 A l 2 (OH) 12 (SO 4) 3· 26 H 2 O) showing a great capacity of …

U (VI) sorption on Ca-bentonite at (hyper) alkaline conditions–spectroscopic investigations of retention mechanisms

T Philipp, SSA Azzam, A Rossberg, N Huittinen… - Science of The Total …, 2019‏ - Elsevier
Environmental conditions in deep geological repositories for radioactive waste may involve
high pH values due to the degradation of concrete. However, the U (VI) sorption at such …

Adsorption of gluconate and uranyl on CSH phases: Combination of wet chemistry experiments and molecular dynamics simulations for the binary systems

I Androniuk, C Landesman, P Henocq… - … of the Earth, Parts A/B/C, 2017‏ - Elsevier
As a first step in develo** better molecular scale understanding of the effects of organic
additives on the adsorption and mobility of radionuclides in cement under conditions of …

Uptake of anionic radionuclides onto degraded cement pastes and competing effect of organic ligands

I Pointeau, N Coreau, PE Reiller - Radiochimica Acta, 2008‏ - degruyter.com
Hardened cement pastes (HCP) present a high affinity with a lot of radionuclides (RN) and
can be used as waste confining materials in radioactive waste repository. Indeed, in …

Analysis of uranium sorption in a laboratory column experiment using a reactive transport and surface complexation model

Y Baqer, S Thornton, DI Stewart, S Norris… - Transport in porous …, 2023‏ - Springer
The transport and retardation of radioactive elements in hyper-alkaline conditions of
radioactive waste repositories is a challenging field that is still poorly understood. In this …

Determination of uranium (VI) sorbed species in calcium silicate hydrate phases: A laser-induced luminescence spectroscopy and batch sorption study

J Tits, G Geipel, N Macé, M Eilzer, E Wieland - Journal of colloid and …, 2011‏ - Elsevier
Batch sorption experiments and time-resolved luminescence spectroscopy investigations
were carried out to study the U (VI) speciation in calcium silicate hydrates for varying …