Removal of 17β-Estradiol (E2) from Aqueous Solutions Using Potassium Permanganate Combined with Ultraviolet (KMnO₄/UV)

Table 2

Degradation kinetic parameters of E2 under optimum pH.

Steroid estrogen	pH	Reaction order	Kinetic equation	Reaction rate constant (K)	R^2	Half-life (min)
E2	4	Zero	y = −0.0061x + 0.6251	0.0061 (mg.L/min)	0.60	82
		First	y = 0.022x + 0.5838	0.022 (1/min)	0.84	31.5
		Second	y = 0.135x + 1.2172	0.135 (L/mg.min)	0.93	4