Search Results - "Bradbury, Michael H"

Porewater chemistry in compacted re-saturated MX-80 bentonite by Bradbury, Michael H, Baeyens, Bart

“…Bentonites of various types are being investigated in many countries as backfill materials in high-level radioactive waste disposal concepts. Being able to…”
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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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Cation exchange capacity measurements on illite using the sodium and cesium isotope dilution technique; effects of the index cation, electrolyte concentration and competition; modeling by Baeyens, Bart, Bradbury, Michael H

“…The isotope dilution technique using Na and Cs as index cations was used to determine the cation exchange capacity (CEC) of illite du Puy as a function of…”
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Structural evidence for the sorption of Ni(II) atoms on the edges of montmorillonite clay minerals: a polarized X-ray absorption fine structure study by Dähn, Rainer, Scheidegger, André M, Manceau, Alain, Schlegel, Michel L, Baeyens, Bart, Bradbury, Michael H, Chateigner, Daniel

“…The nature of surface complexes formed on Ni uptake onto montmorillonite (a dioctahedral smectite) has been investigated over an extended time period by…”
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Predictive sorption modelling of Ni(II), Co(II), Eu(IIII), Th(IV) and U(VI) on MX-80 bentonite and Opalinus Clay: A “bottom-up” approach by Bradbury, Michael H., Baeyens, Bart

“…A considerable amount of work has been carried out over the past several years to develop mechanistic sorption models capable of describing and predicting the…”
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Fe(II) Uptake on Natural Montmorillonites. II. Surface Complexation Modeling by Soltermann, Daniela, Baeyens, Bart, Bradbury, Michael H, Fernandes, Maria Marques

“…Fe­(II) sorption edges and isotherms have been measured on low structural Fe-content montmorillonite (STx) and high structural Fe-content montmorillonite (SWy)…”
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Neoformation of Ni phyllosilicate upon Ni uptake on montmorillonite: A kinetics study by powder and polarized extended X-ray absorption fine structure spectroscopy by Dähn, Rainer, Scheidegger, André M, Manceau, Alain, Schlegel, Michel L, Baeyens, Bart, Bradbury, Michael H, Morales, Magali

“…Wet chemistry kinetics and powder and polarized extended X-ray absorption fine structure (EXAFS and P-EXAFS) spectroscopy were combined to investigate the…”
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Investigation of the different binding edge sites for Zn on montmorillonite using P-EXAFS – The strong/weak site concept in the 2SPNE SC/CE sorption model by Dähn, Rainer, Baeyens, Bart, Bradbury, Michael H.

“…The 2 site protolysis non electrostatic surface complexation and cation exchange (2SPNE SC/CE) sorption model has been used over the past decade or so to…”
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Fe(II) Sorption on a Synthetic Montmorillonite. A Combined Macroscopic and Spectroscopic Study by Soltermann, Daniela, Fernandes, Maria Marques, Baeyens, Bart, Dähn, Rainer, Miehé-Brendlé, Jocelyne, Wehrli, Bernhard, Bradbury, Michael H

“…Extended X-ray absorption fine structure (EXAFS) and Mössbauer spectroscopy combined with macroscopic sorption experiments were employed to investigate the…”
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Experimental measurements and modeling of sorption competition on montmorillonite by Bradbury, Michael H., Baeyens, Bart

“…The source terms arising from radioactive/toxic metal waste repositories will contain a multitude of dissolved metal species, as do natural systems. The…”
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Anisotropic Diffusion in Layered Argillaceous Rocks:  A Case Study with Opalinus Clay by Van Loon, Luc R, Soler, Josep M, Müller, Werner, Bradbury, Michael H

“…Anisotropic diffusion was studied in Opalinus Clay, a potential host rock for disposal of spent fuel, vitrified high-level waste, and long-lived…”
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Diffusion of 22Na and 85Sr in Montmorillonite:  Evidence of Interlayer Diffusion Being the Dominant Pathway at High Compaction by Glaus, Martin A, Baeyens, Bart, Bradbury, Michael H, Jakob, Andreas, Van Loon, Luc R, Yaroshchuk, Andriy

“…A mechanistic understanding of transport phenomena in compacted clays is essential for the use of such materials as engineered barrier systems for the safe…”
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Identification of neoformed Ni-phyllosilicates upon Ni uptake in montmorillonite; a transmission electron microscopy and extended X-ray absorption fine structure study by Dähn, Rainer, Jullien, Michel, Scheidegger, André M, Poinssot, Christophe, Baeyens, Bart, Bradbury, Michael H

“…The aim of this work was to investigate whether neoformed Ni-phyllosilicates can be observed and identified using transmission electron microscopy (TEM) in…”
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A mechanistic description of Ni and Zn sorption on Na-montmorillonite Part I: Titration and sorption measurements by Baeyens, Bart, Bradbury, Michael H.

“…In this paper experimental investigations into the acid/base titration characteristics of Na-montmorillonite and the sorption behaviour of Ni and Zn under a…”
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Modelling the sorption of Zn and Ni on Ca-montmorillonite by Bradbury, Michael H, Baeyens, Bart

“…In some previous work titration and Ni/Zn sorption edge/isotherm measurements carried out under a wide variety of experimental conditions on purified…”
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Th Uptake on Montmorillonite: A Powder and Polarized Extended X-Ray Absorption Fine Structure (EXAFS) Study by Dähn, Rainer, Scheidegger, André M., Manceau, Alain, Curti, Enzo, Baeyens, Bart, Bradbury, Michael H., Chateigner, Daniel

“…The uptake process of Th(IV) onto montmorillonite was studied using powder and polarized-EXAFS (P-EXAFS) spectroscopy. Sorption samples were prepared in 0.1 M…”
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Modelling the sorption of Mn(II), Co(II), Ni(II), Zn(II), Cd(II), Eu(III), Am(III), Sn(IV), Th(IV), Np(V) and U(VI) on montmorillonite: Linear free energy relationships and estimates of surface binding constants for some selected heavy metals and actinides by Bradbury, Michael H., Baeyens, Bart

“…In solution thermodynamics, and more recently in surface chemistry, it is well established that relationships can be found between the free energies of…”
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Fe(II) Uptake on Natural Montmorillonites. II. Surface Complexation Modeling: Understanding the Risks of Unconventional Shale Gas Development by SOLTERMANN, Daniela, BAEYENS, Bart, BRADBURY, Michael H, FERNANDES, Maria Marques

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A mechanistic description of Ni and Zn sorption on Na-montmorillonite Part II: modelling by Bradbury, Michael H., Baeyens, Bart

“…Titration and sorption edge/isotherm measurements, carried out under a wide variety of conditions on Na-montmorillonite, were reported in Part I (Baeyens and…”
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Experimental and modelling studies of caesium sorption on illite by Poinssot, Christophe, Baeyens, Bart, Bradbury, Michael H.

“…A natural illite (illite du Puy) was purified and converted to the homo-ionic Na form. The conditioned Na–illite was characterised in terms of its mineralogy,…”
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