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Journal of Chemistry
/
2018
/
Article
/
Tab 6
/
Research Article
Adsorptive Removal of Methylene Blue and Crystal Violet onto Micro-Mesoporous Zr
3
O/Activated Carbon Composite: A Joint Experimental and Statistical Modeling Considerations
Table 6
Analysis of variance and coefficients of determination.
Sum of squares
Degrees of freedom
Mean square
F
obs
value
MB adsorption onto Zr
3
O/AC
Regression
1.8019
9
0.2002
189.4786
<0.0001
Residue
0.0933
8
0.0117
Lack of fit
0.0880
3
0.0293
27.7681
0.00152
Error
0.0053
5
0.0011
Total
1.8952
17
R
2
0.951
R
2
A
0.895
CV adsorption onto Zr
3
O/AC
Regression
348.6312
9
38.7368
6027.5101
<0.0001
Residue
8.0777
8
1.0097
Lack of fit
8.0455
3
2.6818
417.2990
<0.0001
Error
0.0321
5
0.0064
Total
356.7088
17
R
2
0.977
R
2
A
0.952