Results 161 to 170 of about 14,062 (190)

Freundlich and Langmuir Isotherms as Models for the Adsorption of Toxicants on Activated Charcoal

Journal of Pharmaceutical Sciences, 1987
The Langmuir isotherm has been widely used to characterize the adsorption of solutes from aqueous solutions. Activated charcoal adsorption data obtained experimentally, using a wide range of adsorbate concentrations, fit the Langmuir isotherm poorly but evidence a good fit to the Freundlich isotherm. Statistical analysis reveals this to be also true of
P K, Gessner, M M, Hasan
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The History and Use of the Freundlich Adsorption Isotherm

Journal of the Society of Dyers and Colourists, 1973
The history of the log—log plot of adsorption of a gas or solute against the concentration in the external phase, usually known as the Freundlich isotherm, is traced, from its first use by Boedeker in 1859, in studying adsorption of inorganic compounds by soil, and its applicability to dye—fibre systems is described.
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Sorption of norfloxacin in soils: Analytical method, kinetics and Freundlich isotherms

Chemosphere, 2015
Fluoroquinolones are potent antibacterial agents that are active against a wide range of pathogenic organisms and are widely used in veterinary medicine. Fluoroquinolones and their metabolites may reach the soil through animal excreta or manure and may contaminate water and soils.
Livia Maniero, Peruchi, Anne Hélène, Fostier, Susanne, Rath   +2 more
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On the fractality of the Freundlich adsorption isotherm in equilibrium and non-equilibrium cases

Physical Chemistry Chemical Physics, 2016
This work relates the fractal properties of the adsorbent to the exponent of the Freundlich Isotherm of adsorption.
Przemysław, Borys, Zbigniew J, Grzywna
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THE USE OF THE FREUNDLICH ISOTHERM FOR SOIL PHOSPHATE SORPTION DATA

Journal of Soil Science, 1975
Summary Phosphate sorption data for twenty‐nine soils were found to fit the Freundlich adsorption isotherm better if a measure of native labile P was first added to the sorption data, and this sum plotted against intensity. The exponent from the isotherm thus obtained was closely related to exchangeable A1 (in acid soils) and ...
A. H. FITTER, C. D. SUTTON
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Derivation of the Freundlich Adsorption Isotherm from Kinetics

Journal of Chemical Education, 2009
The Freundlich adsorption isotherm is a useful description of adsorption phenomena. It is frequently presented as an empirical equation with little theoretical basis. In fact, a variety of derivations exist. Here a new derivation is presented using the concepts of fractal reaction kinetics. This derivation provides an alternative basis for interpreting
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Pressure swing adsorption for a system with a Langmuir—Freundlich isotherm

Chemical Engineering Science, 1990
Abstract Expressions for the enrichment factor, the critical recycle ratio, and the extent of recovery are discussed for a pressure swing adsorption system with a Langmuir—Freundlich isotherm. The enrichment factor is defined as the ratio of the mole fraction of the adsorbate gas in the low-pressure product stream to that in the high-pressure feed ...
X. Lu, R. Madey, D. Rothstein, M. Jaroniec, J.-C. Huang   +4 more
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Extension of a Jovanovic–Freundlich isotherm model to multicomponent adsorption on heterogeneous surfaces

Journal of Chromatography A, 1998
A recently proposed Jovanovic-Freundlich isotherm model for single component adsorption without lateral interactions on heterogeneous surfaces is extended to account for lateral interactions and for competitive adsorption. The model is tested using previously reported single component and competitive adsorption data of 2-phenylethanol and 3 ...
I, Quiñones, G, Guiochon
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General purpose Freundlich isotherms for cadmium, copper and zinc in soils

European Journal of Soil Science, 1999
Summary Assessing the accumulation and transport of trace metals in soils and the associated toxicological risks on a national scale requires generally applicable sorption equations. Therefore Freundlich equations were derived for Cd, Zn and Cu using multiple linear regression on batch sorption data from the ...
E. J. Elzinga, J. J. M. Van Grinsven, F. A. Swartjes   +2 more
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Modeling adsorption in multicomponent systems using a Freundlich-type isotherm

Journal of Contaminant Hydrology, 1993
Abstract The suitability of a Freundlich-type isotherm, the Sheindorf-Rebuhn-Sheintuch (SRS) equation, to represent the competitive adsorption of Sr, Cs and Co in Ca-montmorillonite suspensions was investigated. Experimental adsorption data were obtained for systems containing these cations as single-component, binary and ternary mixtures.
Melida Gutierrez, Hector R. Fuentes
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