Hydroxide Sludge/Hydrochar-Fe Composite Catalysts for Photo-Fenton Degradation of Dyes

Table 2

Comparison of MB degradation for various methods and catalysts.

Method/catalyst	C (dye) (mg/L)	pH	Concentration H2O2 (mmol/L)	Reaction time (min)	Decolorization efficiency (%)	Ref
Hetero-Fenton/magnetic porous carbon	10	4	23.58	90	100	[52]
Fenton-like/iron ore tailing from tailing dam	20	6	635.25	180	80	[53]
Photo-Fenton/2 : 1 composite	50	5	14.68	150	95	This work
Fenton-like/Ferrocene	10	4	23.58	90	100	[54]
Photo-Fenton/Fe(II)Fe(III)-LDHs	10	3	0.01	60	100	[55]
Heterogeneous Fenton/iron oxide supported on activated carbon	25	—	489.5	180	98	[56]
Heterogeneous Fenton-like/magnetic nanocomposite	50	—	97.9	180	46	[57]