The Application of Response Surface Methodology in the Study of Photodegraded Industrial Dairy Effluents by the Photo-Fenton Process: Optimization and Economic Viability

Table 7

Amount of reagents used in Photo-Fenton processes as Box-Behnken modeled experiments, considering the volume of 3 L of dairy effluent and a 60 min reaction duration.

Operational step	Variable levels	Reagents (g)
		H2O2	FeSO4·7H2O	H2SO4	NaOH
Solubility of FeSO4·7H2O	1			11.55
	2			14.30
	3			19.80
Adjusted pH as per model	1			1.0
	2			0.8
	3			0.5
Photo-Fenton process	1	100.0	10.46
	2	108.3	12.95
	3	116.7	17.94
Controls/adjustments for pH during reactions	1				2.4
	2				1.6
	3				1.2