30.1.93 LangmuirEXT1

Contents

Function

y=\frac{abx^{1-c}}{1+bx^{1-c}}

Brief Description

Extended Langmuir adsorption isotherm equation.

Sample Curve

CFF Image280.jpg

Parameters

Number: 3

Names: a, b, c

Meanings: a = coefficient, b = coefficient, c = coefficient

Lower Bounds: none

Upper Bounds: none

Script Access

nlf_langmuirext1(x,a,b,c)

Function File

FITFUNC\LANGEXT1.FDF

Category

Power

Reference

  1. Sibbesen, E. (1981). "Some new equations to describe phosphate sorption by soils". J. Soil Sci. 32, pp. 67–74.
  2. Ratkowsky, David A. (1990). Handbook of nonlinear regression models. Marcel Dekker, New York. pp. 98. Eq. 4.3.10.