Effective Removal of Phosphate from Waste Water Based on Silica Nanoparticles

Table 3

Adsorption coefficients for kinetic models.

	Possible adsorption capacity qad (mg·g^−1)	Kinetic coefficients
		(min^−1)	(g·mg^−1·min^−1)	R ^2
Pseudo-first-order model	4.89	0.04	—	0.55
Pseudo-second-order model	5.46	—	0.01	0.92