Adsorption of Cd (II), Cu (II), and Zn (II) from Aqueous Solution onto Nitrogen-Functionalized Desmostachya bipinnata

Table 1

Langmuir adsorption model parameters and experimental 𝑞_max.

Metal ions	𝑞max (mg/g)	𝑞max (mg/g)	𝑏 (L/g)	𝑅^2
	Langmuir model	Experimental
Cd (II)	83.33	76.80	0.052	0.998
Cu (II)	76.92	72.10	0.049	0.999
Zn (II)	62.50	58.16	0.037	0.999