Development of Wood Apple Shell (Feronia acidissima) Powder Biosorbent and Its Application for the Removal of Cd(II) from Aqueous Solution

Table 2

Pseudo-first-order and pseudo-second order rate constants for Cd(II) binding by WAS.

𝑞𝑒exp (mg g^−1)	Pseudo-first-order model				Pseudo-Second-order model
	𝐾1 (min^−1)	𝑞𝑒cal (mg g^−1)	𝑅^2	𝐾2; (mg^−1 min^−1)	𝑞𝑒cal; (mg g^−1)	ℎ; (mg g^−1 min^−1)	𝑅^2
7.099	0.267	6.953	0.9043	0.081	7.188	4.185	0.9917