Sumac Leaves as a Novel Low-Cost Adsorbent for Removal of Basic Dye from Aqueous Solution

Table 2

Kinetic parameters for MB adsorption on SL (pH: 7.0, 𝑡: 25°C, and 𝐶₀: 600 mg/L).

Kinetic models	Models coefficients	𝑅^2
Pseudo-first-order	𝑞𝑒: 21.9 mg/g	0.9711
	𝑘1: 0.01131 min ^−1
Pseudo-second-order	𝑞𝑒: 98.04 mg/g	0.9977
	𝑘2: 2.95 g/mg·min
	𝑡1/2: 0.29 min
Intraparticle diffusion	𝑘𝑖: 1.50 mg/g·min^1/2	0.8109