Doxycycline Degradation by the Oxidative Fenton Process
Table 2
Results of linear (L) and quadratic (Q) regression analyses applied to residual doxycycline concentration data collected at the end of the Fenton process under different operating conditions.
Regression coefficient
Standard error
value
95% Lower confidence limit
95% Upper confidence limit
Mean
0.625
3.688
0.169
0.868
−7.59
8.85
(L)
−3.995
2.448
−1.635
0.132
−9.46
1.45
(Q)
−0.015
2.386
−0.005
0.995
−5.33
5.30
(L)
−7.536
2.448
−3.078
0.011
−12.99
−2.08
(Q)
9.341
2.386
3.914
0.002
4.02
14.66
(L)
−4.540
2.448
−1.849
0.094
−9.98
0.93
(Q)
2.875
2.386
1.204
0.256
−2.44
8.19
1.844
3.198
0.578
0.575
−5.28
8.98
2.676
3.198
0.828
0.426
−4.48
9.78
0.783
3.198
0.242
0.813
−6.35
7.90
L = linear regression; Q = quadratic regression; = Student’s -test; = codified values of ; = codified values of ; = codified values of .
