Selective Cu(II) Adsorption from Aqueous Solutions Including Cu(II), Co(II), and Ni(II) by Modified Acrylic Acid Grafted PET Film

Table 3

The pseudo-first-order and pseudo-second-order rate constants for selective Cu(II) adsorption.

𝑄𝑒 (exp.) (mg/g)	Pseudo-first-order rate constant			Pseudo-second-order rate constant
	𝑄𝑒 (theor.) (mg/g)	𝑘1 (min^−1)	𝑅^2	𝑄𝑒 (theor.) (mg/g)	𝑘2 (g min^−1 mg^−1)	𝑅^2
55.66	34.1	0.0548	0.9877	56.82	0.0034	0.9899