Adsorption of Cu (II) on the Surface of Nonconventional Biomass: A Study on Forced Convective Mass Transfer in Packed Bed Column

Table 4

Study of Langmuir, Freundlich, and Temkin isotherm.

Name of model	Concentration of Cu (II) ion (mg/L)	Model equation	Linear regression coefficient (𝑅^2)
Langmuir isotherm	93	𝑦 = −17.566𝑥 + 115.69	𝑅^2 = 0.8657
Freundlich isotherm	93	𝑦 = 1.0714𝑥 + 0.3295	𝑅^2 = 0.8171
Temkin isotherm	93	𝑦 = 0.0237𝑥 + 1.0117	𝑅^2 = 0.5108