Removal of Reactive Red 120 in a Batch Technique Using Seaweed-Based Biochar: A Response Surface Methodology Approach

Table 3

ANOVA for the developed model.

Source	DF	Adj SS	Adj MS	value	value	Remarks
Model	14	693.639	49.546	96.16	<0.001	Significant
Linear	4	572.566	143.141	277.80	<0.001	Significant
A	1	317.498	317.498	616.19	<0.001	Significant
B	1	162.251	162.251	314.89	<0.001	Significant
C	1	91.853	91.853	178.27	<0.001	Significant
D	1	0.963	0.963	1.87	0.197	—
Square	4	119.561	29.890	58.01	<0.001	Significant
	1	114.505	114.505	222.23	<0.001	Significant
	1	16.870	16.870	32.74	<0.001	Significant
	1	11.414	11.414	22.15	<0.001	Significant
	1	2.954	2.954	5.73	0.034	—
2-way interaction	6	1.512	0.252	0.49	0.805	—
	1	0.172	0.172	0.33	0.574	—
	1	0.860	0.860	1.67	0.221	—
	1	0.000	0.000	0.00	1.000	—
	1	0.357	0.357	0.69	0.421	—
	1	0.123	0.123	0.24	0.635	—
	1	0.000	0.000	0.00	1.000	—
Error	12	6.183	0.515	—	—	—
Lack-of-fit	10	3.978	0.398	0.36	0.890	—
Pure error	2	2.206	1.103	—	—	—
Total	26	699.822	—	—	—	—