Preparation and Photocatalytic Characterization of Modified Nano TiO₂/Nd/Rice Husk Ash Material for Rifampicin Removal in Aqueous Solution

Table 3

Kinetics calculations: reaction rate constant and regression coefficients.

Materials	Zero-order kinetic		First-order kinetic		Second-order kinetic
	k	R^2	k	R^2	k	R^2
TiO2/Nd-P	0.1763	0.85	0.0223	0.97	0.0036	0.98
TiO2/Nd-SL	0.137	0.72	0.0138	0.88	0.0016	0.98
TiO2/Nd/H-D	0.0668	0.49	0.0045	0.52	0.0004	0.66