Search Results - "Geckeis, Horst"

Mineral–Water Interface Reactions of Actinides by Geckeis, Horst, Lützenkirchen, Johannes, Polly, Robert, Rabung, Thomas, Schmidt, Moritz

“…An examination of how light actinide ions react at the mineral-aqeuous solution interface is offered, focusing on sorption reaction and actinide surface…”
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Sorption of Eu(III) on quartz at high salt concentrations by García, David, Lützenkirchen, Johannes, Petrov, Vladimir, Siebentritt, Matthieu, Schild, Dieter, Lefèvre, Grégory, Rabung, Thomas, Altmaier, Marcus, Kalmykov, Stepan, Duro, Lara, Geckeis, Horst

“…[Display omitted] Sorption of Eu(III) onto quartz from highly saline solutions (up to 5 M NaCl) for pHc 2–9 ha s been studied by measuring sorption edges. The…”
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Implementation of cryogenic tender X‐ray HR‐XANES spectroscopy at the ACT station of the CAT‐ACT beamline at the KIT Light Source by Schacherl, Bianca, Prüssmann, Tim, Dardenne, Kathy, Hardock, Kirsten, Krepper, Volker, Rothe, Jörg, Vitova, Tonya, Geckeis, Horst

“…The ACT experimental station of the CAT‐ACT wiggler beamline at the Karlsruhe Institute of Technology (KIT) Light Source is dedicated to the investigation of…”
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Combined X-ray absorption and SEM–EDX spectroscopic analysis for the speciation of thorium in soil by Ratnayake, Sanduni, Lützenkirchen, Johannes, Finck, Nicolas, Schild, Dieter, Heberling, Frank, Gil-Díaz, Teba, Dardenne, Kathy, Rothe, Jörg, Geckeis, Horst

“…Mobility and bioavailability of radionuclides in the environment strongly depend on their aqueous speciation, adsorption behavior and the solubility of…”
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Reactive Transport Modelling of the Long-Term Interaction between Carbon Steel and MX-80 Bentonite at 25 °C by M. Carme Chaparro, Nicolas Finck, Volker Metz, Horst Geckeis

“…The geological disposal in deep bedrock repositories is the preferred option for the management of high-level radioactive waste (HLW). In some of these…”
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Adaptation of an Analytical Procedure for Concurrent Determination of Np and Pu in clay samples by Renz, Tobias, Plaschke, Markus, Quinto, Francesca, Bauer, Andreas, Lagos, Markus, Taubald, Heinrich, Geckeis, Horst

“…Np and Pu are two important actinides of concern for the safe long-term disposal of nuclear waste. Both actinides are, in addition, constituents of global…”
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Sensitive Redox Speciation of Iron, Neptunium, and Plutonium by Capillary Electrophoresis Hyphenated to Inductively Coupled Plasma Sector Field Mass Spectrometry by Graser, Carl-Heinrich, Banik, Nidhu lal, Bender, Kerstin Anne, Lagos, Markus, Marquardt, Christian Michael, Marsac, Rémi, Montoya, Vanessa, Geckeis, Horst

“…The long-term safety assessment for nuclear waste repositories requires a detailed understanding of actinide (geo)­chemistry. Advanced analytical tools are…”
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Radioactive wastes and disposal options by Kienzler, Bernhard, Geckeis, Horst

“…This paper provides for a summary of facts which are indispensable for nuclear waste disposal. Information is presented on types of radioactive wastes and the…”
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Interlink between solubility, structure, surface and thermodynamics in the ThO2(s, hyd)–H2O(l) system by Kiefer, Christian, Neill, Thomas, Cevirim-Papaioannou, Nese, Schild, Dieter, Gaona, Xavier, Vitova, Tonya, Dardenne, Kathy, Rothe, Jörg, Altmaier, Marcus, Geckeis, Horst

“…The impact of temperature on a freshly precipitated ThO 2 (am, hyd) solid phase was investigated using a combination of undersaturation solubility experiments…”
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Bentonite Nanoparticle Stability and the Effect of Fulvic Acids: Experiments and Modelling by Seher, Holger, Geckeis, Horst, Fanghänel, Thomas, Schäfer, Thorsten

“…In this study, the critical coagulation concentration (CCC) for FEBEX bentonite colloids is determined by colloid coagulation studies under variation of pH,…”
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Fifteen Years of Radionuclide Research at the KIT Synchrotron Source in the Context of the Nuclear Waste Disposal Safety Case by Rothe, Jörg, Altmaier, Marcus, Dagan, Ron, Dardenne, Kathy, Fellhauer, David, Gaona, Xavier, González-Robles Corrales, Ernesto, Herm, Michel, Kvashnina, Kristina O., Metz, Volker, Pidchenko, Ivan, Schild, Dieter, Vitova, Tonya, Geckeis, Horst

“…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…”
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A Spectroscopic Characterization and Quantification of M(III)/Clay Mineral Outer-Sphere Complexes by Hartmann, Eva, Baeyens, Bart, Bradbury, Michael H, Geckeis, Horst, Stumpf, Thorsten

“…For the long-term safety assessment of deep radioactive waste repositories an understanding of the interactions of actinides with mineral surfaces at a…”
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Sorption of Eu(III) on a Natural Hematite: Application of a Surface Complexation Model by Rabung, Thomas, Geckeis, Horst, Kim, Jae-Il, Beck, Horst Philipp

“…The solid/water interface reaction is investigated for the sorption of the Eu3+ion onto a well-characterized natural hematite at pH ≤6 in 0.1 mol/L NaClO4…”
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Retention of Iodide and Chloride by Formation of a Green Rust Solid Solution GR-Cl1-xIx: A Multiscale Approach by Platte, Tim, Finck, Nicolas, Mangold, Stefan, Polly, Robert, Geckeis, Horst

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Citrate sorption on cement hydrates by Guidone, Rosa Ester, Gaona, Xavier, Winnefeld, Frank, Altmaier, Marcus, Geckeis, Horst, Lothenbach, Barbara

“…The interaction of citrate with hydrated Portland cement and its main hydrates: C-S-H (0.8 ≤ Ca/Si ≤ 1.4), ettringite, monosulfo-, hemi- and monocarboaluminate…”
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Retention of Iodide and Chloride by Formation of a Green Rust Solid Solution GR-Cl1–x I x : A Multiscale Approach by Platte, Tim, Finck, Nicolas, Mangold, Stefan, Polly, Robert, Geckeis, Horst

“…The uptake of iodide and chloride during the synthesis of green rust (GR), the Fe endmember of the layered double hydroxide (LDH) group, was investigated. GR…”
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Retention of Iodide and Chloride by Formation of a Green Rust Solid Solution GR-Cl 1– x I x : A Multiscale Approach by Platte, Tim, Finck, Nicolas, Mangold, Stefan, Polly, Robert, Geckeis, Horst

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Corrigendum to “Sorption of americium / europium onto magnetite under saline conditions: Batch experiments, surface complexation modelling and X-ray absorption spectroscopy study” [J. Colloid Interface Sci. 561 (2020) 708–718] by Morelová, Nikoleta, Finck, Nicolas, Lützenkirchen, Johannes, Schild, Dieter, Dardenne, Kathy, Geckeis, Horst

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Uptake of Cm (III) and Eu (III) by C–S–H phases under saline conditions in presence of EDTA: A batch sorption and TRLFS study by Thumm, Aline K., Skerencak-Frech, Andrej, Gaona, Xavier, Altmaier, Marcus, Geckeis, Horst

“…Eu (III) and Cm (III) uptake by calcium silicate hydrate phases (C–S–H) was investigated in presence of EDTA in NaCl and CaCl2 solutions. Different…”
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Sorption of Cm(III) and Eu(III) onto clay minerals under saline conditions: Batch adsorption, laser-fluorescence spectroscopy and modeling by Schnurr, Andreas, Marsac, Rémi, Rabung, Thomas, Lützenkirchen, Johannes, Geckeis, Horst

“…The present work reports experimental data for trivalent metal cation (Cm/Eu) sorption onto illite (Illite du Puy) and montmorillonite (Na-SWy-2) in NaCl…”
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