freundlich_model: Freundlich Isotherm Model

In AdsorpR: Adsorption Isotherm Models

Freundlich Isotherm Model

Description

The Freundlich isotherm describes adsorption on heterogeneous surfaces and assumes that stronger binding sites are occupied first (Freundlich, 1907). The model is empirical and is expressed by the equation:

Q = K_f \cdot C_e^{1/n}

where Q is the amount adsorbed, C_e is the equilibrium concentration, K_f is the Freundlich constant related to adsorption capacity, and n is the heterogeneity factor (indicating adsorption intensity).

For more information, see Freundlich (1907): \Sexpr[results=rd]{tools:::Rd_expr_doi("https://doi.org/10.1002/ange.19070201805")}

Usage

freundlich_model(Ce, Qe)

Arguments

Ce	Numeric vector of equilibrium concentrations.
Qe	Numeric vector of amount adsorbed.

Value

A named list of Freundlich parameters and model details.

See Also

Other linear models: bet_model(), langmuir_model(), temkin_model()

Examples

Ce <- c(1, 2, 3, 4, 5)
Qe <- c(0.8, 1.5, 2.1, 2.6, 2.9)
result <- freundlich_model(Ce, Qe)
print(result[1:2])
print(result$`Model Summary`)
print(result$Plot)

AdsorpR documentation built on April 12, 2025, 1:23 a.m.