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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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Design of Simulated Moving Bed Separations: Generalized Langmuir Isotherm
Industrial & Engineering Chemistry Research, 2006In this paper, exact criteria for the complete separation of binary mixtures in simulated moving bed (SMB) units are developed. They apply to systems subject to the generalized Langmuir isotherm, whose definition yields four different types of isotherms corresponding to different combinations of Langmuir and anti-Langmuir behavior of the components to ...
M. Mazzotti
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Adsorption Process Optimization and Adsorbent Evaluation Based on Langmuir Isotherm Model.
Langmuir, 2023Adsorption separation is considered one of the most commonly used gas purification methods. At present, the most widely used adsorption methods are mainly pressure swing adsorption (PSA) and temperature swing adsorption (TSA). In both adsorption methods,
Jinyu Wang +5 more
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From Langmuir isotherm to Brunauer–Emmett–Teller isotherm
AIChE Journal, 2021AbstractDeveloped for multilayer adsorption, the Brunauer–Emmett–Teller (BET) isotherm considers the adsorption of the first layer as an equilibrium chemical reaction between adsorbate molecules and adsorption sites and the adsorption of the second and subsequent layers as a condensation–evaporation process.
Pradeep Vyawahare +3 more
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Re-evaluation of the century-old Langmuir isotherm for modeling adsorption phenomena in solution
Chemistry Physics, 2018One of the first reported equations to describe adsorption at equilibrium is the Langmuir model (J. Am. Chem. Soc. 1918, 40, 1361–1403). Initially, the model was used to describe adsorption from the gas phase, along with adsorption from the liquid phase.
S. Azizian, Setareh Eris, L. Wilson
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Journal of Molecular Liquids, 2018
In this work, the pseudo-first-order (PFO), pseudo-second-order (PSO) and Vermeulen equations were modified by introducing an adjustable parameter i.e. the fractional surface coverage θ.
Qili Hu +5 more
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In this work, the pseudo-first-order (PFO), pseudo-second-order (PSO) and Vermeulen equations were modified by introducing an adjustable parameter i.e. the fractional surface coverage θ.
Qili Hu +5 more
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Spectral properties of Bi-Langmuir isotherms
Chemical Engineering Science, 2013Abstract The paper discusses spectral properties of adsorption equilibria described by the Bi-Langmuir isotherm. The standard Langmuir isotherm and the so-called modified Langmuir isotherm are included as special cases. These spectral properties are of fundamental importance for the theoretical analysis of chromatographic separation processes using ...
Flockerzi, D. +2 more
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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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Water environment research
The Langmuir isotherm, originally developed to study the adsorption of gases, has been modified in this research to investigate the adsorption of solutes in the solution phase.
Rohollah Ezzati
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The Langmuir isotherm, originally developed to study the adsorption of gases, has been modified in this research to investigate the adsorption of solutes in the solution phase.
Rohollah Ezzati
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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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