Results 11 to 20 of about 2,485,930 (195)

Microbial Effects on Repository Performance [PDF]

open access: yes, 2010
This report presents a critical review of the international literature on microbial effects in and around a deep geological repository for higher activity wastes.
West, J. M.   +2 more
core   +4 more sources

Waste and decommissioning [PDF]

open access: yes, 2012
This paper is the fifth in a series of 8 that make up the evidence base for SDC report 'The role of nuclear power in a low carbon economy'.This document is an extensive review of the nuclear waste issue, covering radioactive waste management in both ...
AMEC NNC Limited   +2 more
core   +2 more sources

How well suited are current thermodynamic models to predict or interpret the composition of (Ba,Sr)SO4 solid-solutions in geothermal scalings?

open access: yesGeothermal Energy, 2017
In this study, we report results of the analysis of a particularly interesting scaling sample from the geothermal plant in Neustadt-Glewe in northern Germany, which contained 19% Galena (PbS) and 81% of a heterogeneous assemblage of (Ba,Sr)SO4 crystals ...
Frank Heberling   +3 more
doaj   +1 more source

The role of the 5f valence orbitals of early actinides in chemical bonding

open access: yesNature Communications, 2017
Understanding the chemistry of heavy radioactive elements is crucial to harnessing them for fuel and medicine. Here, the authors combine advanced X-ray spectroscopy and modelling to the study the chemical bonding of the 5fvalence orbitals of uranium ...
T. Vitova   +11 more
doaj   +1 more source

Solubility and hydrolysis of Fe(ii) under hyperalkaline conditions [PDF]

open access: yesRSC Advances
The speciation and solubility of iron under reducing, hyperalkaline conditions was investigated through undersaturation solubility experiments in combination with solid phase characterization by XRD.
Paul Quentin Fürst   +5 more
doaj   +1 more source

Selective Americium Separation: New Insights into the Complexation of Trivalent f-Elements with SO3-Ph-BTBP [PDF]

open access: yesEPJ Web of Conferences
In the Americium selective (AmSEL) process, the N-donor ligand 3,3’,3’’,3’’’-([2,2’-bipyridine]-6,6’-diylbis(1,2,4-triazine-3,5,6-triyl))tetrabenzenesulfonate (SO3-Ph-BTBP) is used to selectively strip Am(III) from a N,N,N’,N’-tetraoctyl diglycolamide ...
Sauerwein Fynn S.   +5 more
doaj   +1 more source

Long-term radionuclide retention in the near field: collaborative R&D studies within EURAD focusing on container optimisation, mobility, mechanisms and monitoring

open access: yesEPJ Nuclear Sciences & Technologies, 2022
Within EURAD, targeted collaborative research activities are performed to further deepen understanding regarding the long-term behaviour of key components in the repository near-field, assess specific radionuclide retention processes as well as ...
Altmaier Marcus   +3 more
doaj   +1 more source

Opportunities and challenges of applying advanced X-ray spectroscopy to actinide and lanthanide N-donor ligand systems

open access: yesJournal of Synchrotron Radiation, 2022
N-donor ligands such as n-Pr-BTP [2,6-bis(5,6-dipropyl-1,2,4-triazin-3-yl)pyridine] preferentially bind trivalent actinides (An3+) over trivalent lanthanides (Ln3+) in liquid–liquid separation. However, the chemical and physical processes responsible for
Tim Pruessmann   +7 more
doaj   +1 more source

Permeability Characteristics of Bedrock Weathering Layer in Southern Coast Area of China

open access: yesShuitu baochi tongbao, 2022
[Objective] The permeability characteristics of the bedrock weathering layer were determined in order to propose a corresponding experimental method of hydraulic conductivity, and thereby provide a scientific reference for the performance assessment of ...
Xinyu Fu   +4 more
doaj   +1 more source

Design of a renewable hydroxyapatite-biocarbon composite for the removal of uranium(VI) with high-efficiency adsorption performance

open access: yesBiochar, 2022
Highlights 1. The recyclable high-efficiency Hap@BC was prepared for U(VI) removal. 2. The adsorption capacity for U(VI) of Hap@BC-10% achieved 834.8 mg/g. 3. The U(VI) extraction efficiency reached 99.9% in dynamic adsorption. 4.
Jun Liao   +5 more
doaj   +1 more source

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