IWA Publishing

Table 3

Experimental values of the reaction rate constant and the degree of degradation

Independent variables		First-order kinetics		Degradation degree, %
A TiO₂ dose (mg)	B H₂O₂ concentration (mM)	Rate constant, min⁻¹	Coefficient of determination, r²	Degradation degree, %
10	0	0.0101	0.953	23.69
10	0.5	0.0407	0.957	64.40
10	1	0.0410	0.972	69.40
10	2.5	0.0511	0.956	74.89
10	5	0.0483	0.992	75.10
10	7.5	0.0411	0.964	67.94
10	10	0.0416	0.962	67.24
15	0	0.0103	0.990	25.91
15	0.5	0.0340	0.990	65.51
15	1	0.0496	0.991	75.36
15	2.5	0.0564	0.999	81.27
15	5	0.0630	0.998	85.29
15	7.5	0.0409	0.980	67.16
15	10	0.0371	0.979	62.97
20	0	0.0230	0.990	48.56
20	0.5	0.0502	0.983	74.81
20	1	0.0758	0.961	87.09
20	2.5	0.0889	0.990	92.9
20	5	0.0757	0.965	86.86
20	7.5	0.0721	0.973	85.17
20	10	0.0484	0.991	75.97
25	0	0.0207	0.990	48.62
25	0.5	0.0472	0.977	75.71
25	1	0.0504	0.990	75.78
25	2.5	0.0607	0.995	82.22
25	5	0.0550	0.990	78.85
25	7.5	0.0566	0.979	78.23
25	10	0.0371	0.994	65.96
30	0	0.0198	0.923	51.18
30	0.5	0.0456	0.931	71.46
30	1	0.0461	0.947	69.54
30	2.5	0.0656	0.951	80.82
30	5	0.0596	0.972	80.92
30	7.5	0.0403	0.957	66.84
30	10	0.0390	0.975	64.88

Independent variables		First-order kinetics		Degradation degree, %
A TiO₂ dose (mg)	B H₂O₂ concentration (mM)	Rate constant, min⁻¹	Coefficient of determination, r²	Degradation degree, %
10	0	0.0101	0.953	23.69
10	0.5	0.0407	0.957	64.40
10	1	0.0410	0.972	69.40
10	2.5	0.0511	0.956	74.89
10	5	0.0483	0.992	75.10
10	7.5	0.0411	0.964	67.94
10	10	0.0416	0.962	67.24
15	0	0.0103	0.990	25.91
15	0.5	0.0340	0.990	65.51
15	1	0.0496	0.991	75.36
15	2.5	0.0564	0.999	81.27
15	5	0.0630	0.998	85.29
15	7.5	0.0409	0.980	67.16
15	10	0.0371	0.979	62.97
20	0	0.0230	0.990	48.56
20	0.5	0.0502	0.983	74.81
20	1	0.0758	0.961	87.09
20	2.5	0.0889	0.990	92.9
20	5	0.0757	0.965	86.86
20	7.5	0.0721	0.973	85.17
20	10	0.0484	0.991	75.97
25	0	0.0207	0.990	48.62
25	0.5	0.0472	0.977	75.71
25	1	0.0504	0.990	75.78
25	2.5	0.0607	0.995	82.22
25	5	0.0550	0.990	78.85
25	7.5	0.0566	0.979	78.23
25	10	0.0371	0.994	65.96
30	0	0.0198	0.923	51.18
30	0.5	0.0456	0.931	71.46
30	1	0.0461	0.947	69.54
30	2.5	0.0656	0.951	80.82
30	5	0.0596	0.972	80.92
30	7.5	0.0403	0.957	66.84
30	10	0.0390	0.975	64.88