Adsorption of Pb(II) from Water onto ZnO, TiO₂, and Al₂O₃: Process Study, Adsorption Behaviour, and Thermodynamics

Table 1

Kinetic parameters for adsorption of Pb(II) onto different adsorbents using PFO, PSO, and Elovich equation.

Kinetic model	Kinetic parameters		ZnO	TiO2	Al2O3
PFO model		min^-1
		mg/g	6.79	3.40	15.53
			0.8710	0.8542	0.8835
PSO model		g/mg·min
		mg/g	48.58	45.37	34.88
			0.9960	0.9999	0.9996
Elovich equation		mg/g·min
		g/mg	0.431	0.712	0.327
			0.7017	0.9473	0.8494