Thermodynamic, Kinetic, and Equilibrium Parameters for the Removal of Lead and Cadmium from Aqueous Solutions with Calcium Alginate Beads

Table 1

Kinetic parameters of cadmium sorption by calcium alginate beads at different temperatures.

Temperature (°C)	Pseudo-first-order (Lagergren)			Pseudo-second-order			Elovich
	𝐾𝐿 (min^−1)	𝑞𝑒 (mg/g)	𝑅	𝐾2 (min^−1)	𝑞𝑒 (mg/g)	𝑅	𝛼 (min^−1)	𝛽 (mg/g)	𝑅
25	0.116	8.199	0.954	0.009	8.6	0.983	19.75	0.903	0.941
35	0.230	8.909	0.961	0.012	8.86	0.988	9.73	0.537	0.944
50	0.581	8.703	0.967	0.038	9.75	0.985	3.596	0.658	0.940