Enhanced Ciprofloxacin Removal from Aqueous Solution Using a Chemically Modified Biochar Derived from Bamboo Sawdust: Adsorption Process Optimization with Response Surface Methodology

Table 3

ANOVA results of the CIP adsorption onto MBC.

Source	Sum of squares	df	Mean square	value	value
Model	4671.16	9	519.02	229.46	<0.0001	Significant
A-initial CIP con	787.42	1	787.42	348.12	<0.0001
B-adsorbent dose	2224.34	1	2224.34	983.38	<0.0001
C-pH	144.01	1	144.01	63.67	<0.0001
D-contact time	691.76	1	691.76	305.83	<0.0001
AB	326.80	1	326.80	144.48	<0.0001
BD	129.79	1	129.79	57.38	<0.0001
CD	138.47	1	138.47	61.22	<0.0001
B^2	150.60	1	150.60	66.58	<0.0001
C^2	102.79	1	102.79	45.45	<0.0001
Residual	45.24	20	2.26
Lack of fit	37.98	15	2.53	1.74	0.2806	Not significant
Pure error	7.26	5	1.45
Cor total	4716.40	29

df: degree of freedom.