Results 251 to 260 of about 175,932 (291)
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Journal of Colloid and Interface Science, 2009
This work presents a simple solution for the diffuse double layer model, applicable to calculation of surface speciation as well as to simulation of ionic adsorption within the diffuse layer of solution in arbitrary salt media. Based on Poisson-Boltzmann equation, the Gaines-Thomas selectivity coefficient for uni-bivalent exchange on clay, K(GT)(Me(2+)/
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This work presents a simple solution for the diffuse double layer model, applicable to calculation of surface speciation as well as to simulation of ionic adsorption within the diffuse layer of solution in arbitrary salt media. Based on Poisson-Boltzmann equation, the Gaines-Thomas selectivity coefficient for uni-bivalent exchange on clay, K(GT)(Me(2+)/
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The diffusion and sorption of water in zeolites—I. Sorption
Journal of Physics and Chemistry of Solids, 1961Abstract Equilibrium sorption measurements have been made for D2O and H2O in the crystalline zeolites chabazite, gmelinite and heulandite, at relative coverages greater than θ = 0.85. The water contents, the shape of the isotherms, the isosteric heats and the partial molar entropies are almost identical for H2O in chabazite and gmelinite; in ...
R.M. Barrer, B.E.F. Fender
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Sorption, sorption kinetics and diffusion of pyridine in zeolites
Microporous and Mesoporous Materials, 1998Abstract In situ FTIR spectroscopy was used to monitor the sorption and desorption kinetics of pyridine into and out of microporous materials such as mordenite, ZSM-5 and silicalite. A previously described experimental technique and method of evaluation, which had been successfully used to study sorption and sorption kinetics of aromatics in H-ZSM-5,
Bludau, H., Karge, H., Nießen, W.
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Azimsulfuron Sorption−Desorption on Soil
Journal of Agricultural and Food Chemistry, 2004The sorption and desorption of the herbicide azimsulfuron, N-[[(4-dimethoxypyrimidin-2-yl)amino]carbonyl]1-methyl-4-(2-methyl-2H-tetrazole-5-yl)1H-pyrazole-5-sulfonamide, were studied using five soils. Sorption isotherms conformed to the Freundlich equation. It was found that pH is the main factor influencing the sorption and that the sorption on soils
A. Pusino +2 more
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Theory of sorption chromatography
Journal of Chromatography A, 1965Abstract The earlier theory of partition chromatography by the author has been extended to sorption chromatography by incorporating a sorption term for solute interaction with the stationary phase of a chromatographic column. A procedure for the numerical solution of the problem is indicated.
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Microwave radiation's influence on sorption and competitive sorption in zeolites
AIChE Journal, 2000AbstractThe influence of microwave radiation on adsorption selectivity was studied using the adsorption and desorption of cyclohexane and methanol on high‐silica zeolites. The amount of microwave energy absorbed depends on the specific system of adsorbent and adsorbate.
Turner, MD +3 more
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Sorption Promotors in Biopharmaceutics
Angewandte Chemie International Edition in English, 1969AbstractThe absorption of drugs depends on the physico‐chemical properties of the constituent substances. Drugs that are absorbed only with difficulty or only slowly, or even not at all, can be made to penetrate into the skin and the mucous membrane (penetration) or to pass through them (permeation) with the aid of “sorption promotors”.
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Cogon Grass for Oil Sorption: Characterization and Sorption Studies
Key Engineering Materials, 2018Cogon grass (Imperata cylindrica), an invasive, unwanted grass was used and evaluated for its applicability for the sorption of engine oil. Other than dried and ground for smaller size, no notable treatment was performed on the cogon grass. The physical and chemical properties of cogon grass were characterized by ash content, bulk density, pH slurry ...
Shariff Ibrahim +4 more
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Numerical determination of the sorption isotherm for nonisothermal sorption
Computational Mathematics and Modeling, 2009Two mathematical models of sorption dynamics are considered, one allowing for external diffusion kinetics and the other for internal diffusion kinetics with heat balance. Two inverse problems are investigated for these models and numerical solutions are proposed. The efficiency of the numerical methods is studied in a computer experiment.
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2015
Thermal energy storage for use in connection with solar heating systems is described, concentrating on storage employing sorption heat energy.
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Thermal energy storage for use in connection with solar heating systems is described, concentrating on storage employing sorption heat energy.
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