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

Table 1

Composition of the HS, HC-Fe, and 2 : 1 composite.

Element (wt %)	HS	HC-Fe	2 : 1 composite
Fe	6.93	13	11
Al	10.86	0.0027	9.5
Na	0.59	0.0031	0.79
Mg	2.2	<0.001	1.74
Ca	2.94	0.0038	1.71
Ti	0.91	<0.001	0.36
Mn	0.19	<0.001	0.06