Optimized Synthesis of FeS Nanoparticles with a High Cr(VI) Removal Capability

Table 2

ANOVA results for the synthesis of FeS nanoparticles using OA₉ (3⁴) matrix.

Level	A (stabilizer)	B (oscillation)	C (titration)	D (Na2S)
1	0.05 wt.% CMC	100 rpm	0.01 mL/s	0.0213 M
2	0.1 wt.% CMC	200 rpm	0.05 mL/s	0.0426 M
3	0.2 wt.% CMC	250 rpm	0.15 mL/s	0.0639 M
	64.989	59.867	59.723	36.892
	41.132	40.188	42.693	49.633
	29.082	35.149	32.788	48.678
	35.907	24.718	26.935	12.741
Significance of influence		A > C > B > D
Optimal combination		A3B3C3D1