Langmuir isotherm equation

Langmuir isotherm equation

[′laŋ‚myu̇r ′īs·ə‚thərm i‚kwā·zhən]
(physical chemistry)
An equation, useful chiefly for gaseous systems, for the amount of material adsorbed on a surface as a function of pressure, while the temperature is held constant, assuming that a single layer of molecules is adsorbed; it is ƒ = ap /(1 + ap), where ƒ is the fraction of surface covered, p is the pressure, and a is a constant.
References in periodicals archive ?
The best interpretation for the experimental data given by the Langmuir isotherm equation and maximum adsorption capacity of the sorbent under the optimal conditions was 198.
The linear form Langmuir isotherm equation can be represented by:
The linearized Langmuir isotherm equation also known as Hanes-Woolf plot is represented by eq.
L] is the equilibrium constant obtained from the Langmuir isotherm equation, T is the absolute solution temperature (K), and R is the ideal gas constant (8.
The Langmuir isotherm equation (Equation 2) is the most widely used two-parameter equation and has been successfully applied to many adsorption processes (Liu and Zhang, 2009; Cao et al, 2009; Chen et al, 2011).
The Langmuir isotherm equation is represented by the following equation (Tsai et al.
The equilibrium data conform to the Langmuir isotherm equation with the monolayer adsorption capacity of 112.
This deviation from unity may be due to the interaction among the adsorbed species on the metal surface and also due to the nonhomogeneous surface conditions of the alloy, has been postulated in the derivation of the Langmuir isotherm equation that adsorbed molecules do not interact with one another, but this is not true in the case of organic molecules having polar atoms or groups which are adsorbed on the cathodic and anodic sites of the metal surface.
The sorption of Cu by the study soil was described by the Langmuir isotherm equation (McBride 1994):
A possible explanation is that the xylidine adsorption equilibrium follows the Freundlich isotherm while the Rice method uses the linear isotherm and the Thomas method uses the Langmuir isotherm equation.
The adsorption isotherms data (Table2) were fitted to both the Freundlich and Langmuir isotherm equations.