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Diffusion of na and cs in montmorillonite

WebJun 11, 2024 · Chang, F.-R.C et al have published the self-diffusion coefficient of Li + [6] , Na + [5] , K + [7] and water in hydrated montmorillonite. Sutton et al. [8] have presented the transport of Cs + and Open Advanced Search WebDry, hetero-ionic Na-Cs-montmorillonite is characterized by a symmetric sheet configuration, as is homo-ionic Cs-montmorillonite. We found that at low degrees of …

Diffusion mechanism of cesium ions in compacted

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 … WebJan 15, 2007 · The diffusion of 22Na and 85Sr in highly compacted montmorillonite and kaolinite is investigated as a function of the "external salt concentration" (NaClO4), i.e., of the solution in equilibrium with the clay. Consistent results were obtained from through-diffusion experiments and tracer profile analysis. thomaston dump https://techwizrus.com

Diffusion of Na and Cs in montmorillonite - Semantic Scholar

WebNa-Montmorillonit zeigt osmotische Quellung (Entwicklung einer diffusen Doppelschicht — d (001) ≫ 19 Å) in Formamid und N -Methylformamid und Cs ergibt osmotisches Quellungsverhalten in Formamid. Cs-Montmorillonit weist im Bereich der kristallinen Quellung mit allen Flüssigkeiten Schichtabstände auf, die größer als die mit Wasser … 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... WebDec 30, 2024 · Tachi Y, Yotsuji K (2014) Diffusion and sorption of Cs +, Na +, I-, and HTO in compacted sodium montmorillonite as a function of porewater salinity: Integrated sorption and diffusion model. Geochim Cosmochim Acta 132:75–93. ... Kasar S, Kumar S, Bajpai RK, Tomar BS (2016) Diffusion of Na(I), Cs(I), Sr(II) and Eu(III) in smectite rich … thomastone mondelange

Diffusion and sorption of Cs+, Na+, I− and HTO in compacted …

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Diffusion of na and cs in montmorillonite

Diffusion of 22Na and 85Sr in montmorillonite: evidence of

WebThe Fe released from Fe (III)-Mt during the Cs (I) sorption was found to be not more than 0.2 ppm. However, on lowering the pH and increasing the ionic strength, the Fe release increased. Furthermore, the apparent diffusion coefficient for … WebThe microcalorimetric investigation of the system composed of a homoionic Na-montmorillonite extracted from ANDRA MX80 bentonite and CsCl in aqueous solution …

Diffusion of na and cs in montmorillonite

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WebMay 1, 2014 · The diffusion and sorption behaviors of cationic Cs⁺ and Na⁺, anionic I⁻ and neutral tritiated water (HTO) tracers in compacted montmorillonite were investigated as a function of porewater... 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.

WebJan 2, 2024 · In such an environment, montmorillonite in compacted bentonite might be altered to illite due to the hydrothermal reactions caused by the decay heat of … WebThe 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 …

WebMay 1, 2014 · The diffusion and sorption behaviors of cationic Cs + and Na +, anionic I − and neutral tritiated water (HTO) tracers in compacted montmorillonite were … WebThe 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. …

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 …

WebOct 1, 2010 · The recently developed CLAYFF force field is used to predict the basal spacing as a function of the water content in the interlayer. The simulations reproduced the swelling pattern of these montmorillonites, suggesting a mechanism of their hydration different (K + < Na + < Ca 2+) from that of K +-, Na +-, and Ca 2+-montmorillonites. In ... thomaston dump hoursWebSep 1, 1999 · It has also been reported that the activation energy for diffusion of Cs + ions in Na-montmorillonite increased from 34 to 53 kJ mol −1 (Kozaki et al., 1996) and that … thomaston dotWebJun 1, 2006 · Our model predicts, in agreement with experiment, that the mean principal value of the apparent diffusion coefficient tensor follows a single relationship when plotted against the partial montmorillonite dry density (mass of montmorillonite per combined volume of montmorillonite and pore space). thomaston electricalWebJan 1, 1998 · Activation energies lower than that for the diffusion of sodium ions in free water were found for montmorillonite specimens with dry densities of {le} 1.2 Mg/m {sup 3}, while higher activation energies were observed at dry densities {ge} 1.4 Mg/m {sup 3}. thomaston employmentWebJan 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... thomaston dmv phone numberWebof 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 … thomaston enterpriseWebAug 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 … uk government revenue breakdown