Flotation and Sorptive-Flotation Methods for Removal of Lead Ions from Wastewater Using SDS as Surfactant and Barley Husk as Biosorbent

Table 2

Pseudo-first and second-order rate constants for Pb(II) with correlation coefficients (𝑅²).

	Pseudo-first-order kinetic model		Pseudo-second-order kinetic model
	𝐾1 (min^−1)	𝑅^2	𝐾2 (mg/g⋅min)	𝑅^2
Pb(II)	0.122	0.936	1.6	0.506