广元072医院男科:什么是langmuir模型和Freundlich模型？

是统计方面的回归模型,用来做数学分析和模型用的.
你给点悬赏分说,我就给你详细一点.

1、Freundlich isotherm developed by Freundlich (1906) describes the equilibrium on heterogeneous surfaces and does not assume monolayer capacity. It is given by：qe =KF*Ce^1/n.where qe is the equilibrium amount of solute adsorbed per unit mass of adsorbent (mg/g), Ce is the equilibrium concentration of solute in bulk solution (mg/L), KF is a constant indicative of the relative adsorption capacity of the adsorbent (mg/g) (mg/L)n, and the constant 1/n indicates the intensity of the adsorption.
2、Langmuir isotherm
The Langmuir isotherm describes the surface as homogeneous assuming that all the adsorption sites have equal solute affinity and that adsorption at one site does not affect the adsorption at an adjacent site (Langmuir, 1918). The Langmuir equation may be written as：qe=Q0*KL*Ce/（1+KL* Ce）。where Q0 is the monolayer adsorption capacity (mg/g) and KL is the constant related to free adsorption energy (L/mg) that is the reciprocal of the concentration at which half saturation of the adsorbent is reached.