Optimization of variables for cadmium and copper removal using magnetic nanocomposite

BMC Chemistry

Table 3 The ANOVA of removal of heavy metals

Source	DF	Cadmium				Copper
Source	DF	Sum of squares	Mean square	F-value	P-value	Sum of squares	Mean square	F-value	P-value
Model	14	7412.14	529.44	223.62	< 0.0001	8105.48	578.96	140.83	< 0.0001
A	1	2524.99	2524.99	1066.47	< 0.0001	4190.21	4190.21	1019.26	< 0.0001
B	1	681.92	681.92	288.02	< 0.0001	441.53	441.53	107.40	< 0.0001
C	1	1020.90	1020.90	431.19	< 0.0001	743.26	743.26	180.80	< 0.0001
D	1	1684.21	1684.21	711.35	< 0.0001	1028.35	1028.35	250.14	< 0.0001
A*B	1	0.3752	0.3752	0.1585	0.6962	6.30	6.30	1.53	0.2348
A*C	1	64.12	64.12	27.08	0.0001	7.59	7.59	1.85	0.1943
A*D	1	11.54	11.54	4.88	0.0432	14.67	14.67	3.57	0.0784
B*C	1	0.3452	0.3452	0.1458	0.7080	10.66	10.66	2.59	0.1282
B*D	1	6.21	6.21	2.62	0.1261	0.6084	0.6084	0.1480	0.7059
C*D	1	41.57	41.57	17.56	0.0008	12.64	12.64	3.07	0.1000
A²	1	217.75	217.75	91.97	< 0.0001	244.91	244.91	59.57	< 0.0001
B²	1	998.19	998.19	421.60	< 0.0001	1049.05	1049.05	255.18	< 0.0001
C²	1	336.98	336.98	142.33	< 0.0001	725.89	725.89	176.57	< 0.0001
D²	1	298.72	298.72	126.17	< 0.0001	166.58	166.58	40.52	< 0.0001
Residual	15	35.51	2.37			61.67	4.11
Lack of Fit	10	26.80	2.68	1.54	0.3314	27.22	2.72	0.3950	0.9009
Pure Error	5	8.71	1.74			34.45	6.89
Cor Total	29	7447.65				8167.15

ISSN: 2661-801X