Synthesis and Characterization of New Catalysts Grains Based on Iron(Oxy)Hydroxides supported on Zirconium for the Degradation of 4-Nitrophenol in Aqueous Solution

Table 5

Mechanical properties of the catalysts used in the degradation of 4-nitrophenol.

Sample	Friability, %	Settlement, mL
HFO	0.1	5
75HFe25Zr	0.1	14.29
25HFe75Zr	0.2	11.11
Goethite	0.2	14.28
75GFe25Zr	0.1	15
25GFe75Zr	0.3	16.66
Standards	<1%	<20