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Modeling Langmuir isotherms with the Gillespie stochastic algorithm
Journal of Chromatography A, 2015The overall goal of this work is to develop a robust modeling approach that is capable of simulating single and multicomponent isotherms for biological molecules interacting with a variety of adsorbents. Provided the ratio between the forward and reverse adsorption/desorption constants is known, the Gillespie stochastic algorithm has been shown to be ...
J. Epstein +5 more
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Tylosin sorption to diatomaceous earth described by Langmuir isotherm and Freundlich isotherm models
Chemosphere, 2018Tylosin, an antibiotic used for maintaining livestock health, is a macrolide structurally similar to a number of important, often prescribed human antibiotics. Because of this relationship, tylosin presents a potential threat of antimicrobial resistance from environmental buildup.
Bobbi S, Stromer +2 more
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Isosteric heat of adsorption from thermodynamic Langmuir isotherm
Adsorption, 2021The recently developed thermodynamic Langmuir isotherm model is used to estimate the isosteric heat of adsorption for pure component adsorption. Specifically, pure component adsorption isotherms at different temperatures are first correlated with the thermodynamic Langmuir isotherm model.
Hla Tun, Chau-Chyun Chen
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Synthesis and langmuir isotherms of difluorostearic acids
Journal of Fluorine Chemistry, 1998Abstract The CF 2 containing 6,6- and 10,10-difluorooctadecanoic acids 7 and 8 , respectively have been synthesised and their Langmuir isotherms evaluated. In marked contrast to the behaviour of octadecanoic acid (stearic acid) 1 it is demonstrated that spreading on an aqueous subphase generates an unstable monolayer which reorganises to a more
David O'Hagan +4 more
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Langmuir and BET theories (kinetic isotherms)
1991The success of kinetic theories directed toward the measurements of surface areas depends upon their ability to predict the number of adsorbate molecules required exactly to cover the solid with a single molecular layer. Equally important is the cross-sectional area of each molecule or the effective area covered by each adsorbed molecule on the surface.
S. Lowell, Joan E. Shields
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Extended Langmuir Isotherm for Binary Liquid Mixtures
Langmuir, 2001A new model for describing the surface tension of binary liquid mixtures as a function of the bulk composition over the whole concentration range is presented. We first derive an equation relating surface and bulk volume fractions that generalizes the Langmuir isotherm so as to cover the entire range of concentrations. By combining this isotherm with a
Ángel Piñeiro +4 more
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"Ghost-Isotherms". Problems with Cleaning Langmuir Troughs
Langmuir, 1995Fluff-free precision paper wipes are widely used for cleaning Langmuir troughs with organic solvents. The results presented in this article show that paper tissues often contain surface-active agents, which may lead to the measurement of incorrect surface pressure-area isotherms.
P. B. Schneider +2 more
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A Statistical Derivation of Langmuir's Adsorption Isotherm
Mathematical Proceedings of the Cambridge Philosophical Society, 1935The commonest form of Langmuir's adsorption isotherm iswhere θ is the fraction of the surface of the solid covered by adsorbed molecules, p the gas pressure in equilibrium with the adsorbed layer and A = A (T) a function of the temperature alone.
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Surface Pressure Isotherm for the Fluid State of Langmuir Monolayers
The Journal of Physical Chemistry B, 2006The equation of state for the monolayer comprised of the molecules of different sizes (water and biopolymers) is modified to describe the fluid (liquid-expanded and gaseous) state of the insoluble molecules monolayer. In contrast to the equation of state derived previously in ref 1, this equation does not involve either the Gibbs' adsorption equation ...
Fainerman, V., Vollhardt, D.
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Langmuir adsorption isotherm forSulfolobus acidocaldarius on coal particles
Biotechnology Letters, 1987Sulfolobus acidocaldarius attachment to coal particles was observed in 20% coal slurry at 72°C and pH 2.0. The rate and extent of attachment were determined and the data fit the Langmuir adsorption model. The results compared qualitatively with selected adsorption data from other investigators forThiobacillus ferrooxidans.
Chi-Yu Chen, Duane R. Skidmore
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