Table 2.

Pseudo-first order kinetic constants and half-lives of TCS and IBU in synthetic effluent in different UV and UV/H₂O₂ direct photolysis reactors. TCS₀ = 15.46 ± 0.31 mg L⁻¹, IBU₀ = 34.5 ± 0.25 mg L⁻¹

IBU			TCS			Operational conditions
k′ (min−1)	R2	t1/2 (min)	k′ (min−1)	R2	t1/2 (min)
0.0031	0.994	223.60	0.189	0.998	3.66	Direct photolysis pH 9.4
0.0029	0.998	239.01	0.0799	0.970	8.67	Direct photolysis pH 6.0
0.0013	0.991	533.19	0.0911	0.982	7.61	Direct photolysis pH 3.6
0.0175	0.999	39.61	0.0863	0.979	8.03	UV/H2O2 (15 mg L−1) pH 6.0
0.0219	0.996	31.65	0.0834	0.979	8.31	UV/H2O2 (10 mg L−1) pH 6.0
0.0097	0.996	71.46	0.108	0.993	6.42	UV/H2O2 (5 mg L−1) pH 6.0