Recent Overview of Solar Photocatalysis and Solar Photo-Fenton Processes for Wastewater Treatment

Table 3

Solar photo-Fenton coupled with other treatment processes.

Contaminant (concentration interval)	Experimental conditions	Reactor type (volume)	Best degradation conditions	Coupled treatment	Reference
	Catalyst (pH)		Percentage (time)
Procion Red H-E7B (25 mg L^−1)	2 mg L^−1 Fe^2+ (2.8–3.0 for SPF and neutral for BT)	CPC (35 L)	30% DOC removal in photo-Fenton pre-treatment (13 min only photo-Fenton process)	The photo-Fenton process precedes an aerobic biological treatment carried out in an immobilised biomass reactor (IBR).	[99]
Cibacron Red FN-R (250 mg L^−1)	5 mg L^−1 Fe^2+ (2.8–3.0 for SPF and neutral for BT)	CPC (35 L)	67% DOC removal in photo-Fenton pretreatment (22 min only photo-Fenton process)	The photo-Fenton process precedes an aerobic biological treatment carried out in an immobilised biomass reactor (IBR).	[99]
Pesticides: Vydate, Metomur, Couraze, Ditumur, and Scala (500 mg L^−1 DOC)	20 mg L^−1 Fe^2+ (2.7–2.9 for SPF and neutral for BT)	CPC (50 L)	Carbon removal efficiency of the combined process was as high as 90%. activated sludge acclimatization with several SBR cycles led to complete biodegradation in less than 5 h	The photo-Fenton process precedes a biotreatment with acclimatized activated sludge in several sequencing batch eactor (SBR) cycles	[88]