Diffusion of na and cs in montmorillonite
WebAug 1, 2004 · Diffusion coefficients of water and ions as a function of temperature are summarized in Fig. 2, while trajectories of Na + and Cs + ions in the monohydrated … WebApr 1, 2010 · Ca/Na montmorillonite and natural Wyoming bentonite (MX-80) have been studied experimentally and theoretically. For a clay system in equilibrium with pure water, Monte Carlo simulations predict a large swelling when the clay counterions are monovalent, while in presence of divalent counterions a limited swelling is obtained with an aqueous …
Diffusion of na and cs in montmorillonite
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WebApr 1, 2009 · The purpose of this study was to investigate the swelling behavior of Na- and Ca-montmorillonite at various temperatures greater than room temperature, up to 150°C, using in situ X-ray diffraction (XRD) analysis. A sample chamber was designed, the temperature and humidity of which were controlled precisely, for environmental in situ … WebApr 1, 2010 · The cation exchange capacity was 4.624 meq·g −1 , and the maximum adsorption rate of Cs + was 64.1%. Galambo et al. [34] used bentonite and montmorillonite to adsorb 137 Cs in radioactive...
Webadshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A Webionic (mixed Na-Cs) montmorillonite as a function of water content and resulting interlayer spacing, and to determine the dependence of diffusion coefficients of Na+ and Cs+ on …
WebJul 20, 2024 · The result showed that calculated activation energies for ion and water diffusion in Na-montmorillonite were similar to each other and to the water hydrogen bond energy, suggesting the breaking of water–water and water-clay hydrogen bonds as a likely mechanism for interlayer diffusion [ 3 ].
WebMay 1, 2005 · Size, morphology, and apparent charge of individual Na-montmorillonite particles of natural MX-80 sodium montmorillonite were investigated in the present study by the use of three coupling methods.
WebDiffusion and sorption of cesium (Cs) and iodine (I) were investigated in a purified and moderately compacted sodium montmorillonite (dry density of 800 kg m-3) saturated with 0.01, 0.1 and 0.5M NaCl solutions.The effective diffusivity (D e) and capacity factor (α) for Cs and I were measured by through-diffusion experiments, coupled with multiple curve … cancer cakesWebJan 1, 2004 · The values for the relative diffusion coefficients of Cs + extracted from our simulations are smaller than those obtained in previous studies (Marry and Turq, 2003;Bourg, 2004), but they are... fishing tackle float boxesWebThe effect of temperature in the range of 0–150 °C was studied for homoionic montmorillonite clays with Na + and Cs + compensating ions in low hydration states. Both static and dynamic information concerning the interlayer ions and water molecules was obtained by Monte Carlo and molecular dynamics. Principal structural changes were … cancer candleWebof surface diffusion of Cs sorbed on illite contained in compacted montmorillonite was discussed. EXPERIMENTAL METHODS Materials KunipiaF(suppliedbyKunimineIndustryCo.Ltd., Japan), a commercially produced Na-montmorillonite purified from a crude bentonite Kunigel V1, was used as the sample … cancer care center of brevardWebThe state and dynamics of water and cations in pure and mixed Na-Cs-montmorillonite as a function of the interlayer water content were investigated in the present study, using … fishing tackle for sale gumtree durbanWebThe effect of temperature in the range of 0–150 °C was studied for homoionic montmorillonite clays with Na + and Cs + compensating ions in low hydration states. … cancer care clinic nowraWebMay 1, 2014 · The diffusion and sorption behaviors of cationic Cs + and Na +, anionic I − and neutral tritiated water (HTO) tracers in compacted montmorillonite were … cancer care associates gyn oncology bethlehem