Photooxidation Contribution Study on the Decomposition of Azo Dyes in Aqueous Solutions by VUV-Based AOPs

Table 5

The comparison of oxidation efficiency.

		VUV/H2O2 process		VUV/TiO2 process
Dye	pH	𝑘 (min^−1)	𝑘/[H2O2] (min^−1mM^−1)	𝑘 app (min^−1)	𝑘 app/[TiO2] (min^−1mM^−1)
Acid Orange 8	3	0.0474	0.01612	0.0148	0.00236
	5	0.0377	0.01282	0.0151	0.00241
	7	0.043	0.01462	0.0141	0.00225
	9	0.0331	0.01125	0.0129	0.00206
	11	0.0213	0.00724	0.0096	0.00153
Acid Blue 29	3	0.0102	0.00347	0.0086	0.00137
	5	0.009	0.00306	0.0065	0.00104
	7	0.0124	0.00422	0.0044	0.00070
	9	0.0144	0.00490	0.0044	0.00070
	11	0.0097	0.00330	0.0044	0.00070
Acid Blue 113	3	0.0081	0.00275	0.2469	0.03945
	5	0.0133	0.00452	0.0324	0.00518
	7	0.0175	0.00595	0.0068	0.00109
	9	0.0104	0.00354	0.0061	0.00097
	11	0.0168	0.00571	0.006	0.00096