Results 211 to 220 of about 41,957 (229)

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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Non-linear adsorption in fixed beds: the Freundlich isotherm

Chemical Engineering Science, 1973
Abstract Solutions have been obtained relating the breakthrough curve to bed parameters for the case of adsorption in fixed beds where the adsorption isotherm is of the non-linear Freundlich type and where the overall rate of adsorption is controlled by the rate of mass transfer across the gas-film surrounding each particle.
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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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Determination of the originally adsorbed soil phosphorus by modified Freundlich isotherm

Communications in Soil Science and Plant Analysis, 1995
Abstract Phosphorus adsorption was studied on four different Hungarian soil samples previously treated with phosphorus. Six different isotherm models were fitted to the P adsorption data. All the models took into account the amount of phosphate originally adsorbed (Q).
L. Tolner, Gy. Füleky
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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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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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Lead, copper and zinc biosorption from bicomponent systems modelled by empirical Freundlich isotherm

Applied Microbiology and Biotechnology, 2000
The biosorption of lead, copper and zinc ions on Rhizopus arrhizus has been studied for three single-component and two binary systems. The equilibrium data have been analysed using the Freundlich adsorption model. The characteristic parameters for the Freundlich adsorption model have been determined and the competition coefficients for the competitive ...
Y, Sağ, A, Kaya, T, Kutsal
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Organic pollutants adsorption from multicomponent systems modeled by freundlich type isotherm

Water Research, 1982
Abstract A novel Freundlich-type multicomponent adsorption isotherm is employed successfully to describe the adsorption of parabromophenol, phenol and benzensulfonate on activated carbon from the respective bicomponent and three-component aqueous solutions.
C. Sheindorf, M. Rebhun, M. Sheintuch
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The Influence of the Temperature on the Parameters of Extended Freundlich's Isotherm

Journal of Colloid and Interface Science, 1998
Abstract In this paper the expression for adsorption isotherm expressed by an asymptotic development, the extended Freundlich's isotherm, was applied to the study and interpretation of energetic heterogeneity. This expression presents the relative monolayer coverage of the entire surface as a dependence on adsorbate pressure (or concentration) and on
Milton Silva da Rocha, Koshun Iha, Antônio Cândido Faleiros, Evaldo José Corat, Maria Encarnación Vázquez Suárez-Iha   +4 more
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Soil sorption of caesium modelled by the Langmuir and Freundlich isotherm equations

Applied Geochemistry, 1995
The Langmuir and Freundlich adsorption isotherm equations were used to model Cs sorption in 6 Welsh soils. The pH (in water), of the soils ranged from 3.5 to 6.5, and the estimated organic matter (determined by loss-on-ignition) ranged from 4.8% to 46%.
Campbell, Linda S., Davies, B. E.
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