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Table 3 Mean concentrations and removal of antidepressants contained in final effluent following ozonation

From: Ozone oxidation of antidepressants in wastewater –Treatment evaluation and characterization of new by-products by LC-QToFMS

Compounds Conc. (n=2) Ozone 5 mg/L Conc. (n=2) Ozone 9 mg/L
  Effluent (ng/L) Disinfected effluent (ng/L) Removal Eff. (%) Effluent (ng/L) Disinfected effluent (ng/L) Removal Eff. (%)
CIT 186 ± 27 123 ± 11 34 148 ± 16 56 ± 1 62
SER 14 ± 2 100 9.4 ± 0.1 100
DSER 23 ± 1 100 19 ± 3 100
AMI 106 ± 5 36 ± 1 66 195 ± 11 15 ± 1 92
NTRI 18 ± 1 0.18 ± 0.01 99 19 ± 4 100
VEN 2194 ± 191 963 ± 43 56 3144 ± 107 986 ± 27 69
DVEN 2319 ± 11 100 3448 ± 279 100
CAR 716 ± 4 12 ± 1 98 714 ± 13 100
FLU 6.3 ± 0.8 100 9.5 ± 0.6 100
NFLU 11 ± 2 100 6.5 ± 0.2 100
PAR 9.0 ± 1.3 100 13 ± 4 100
MIR 104 ± 1 1.6 ± 0.1 98 109 ± 3 100
DMIR 41 ± 4.1 3.3 ± 0.4 92 25 ± 1 100
  1. Note: Measured residual O3 concentrations for 5, 9 and 13 mg/L of O3 were respectively 0.000, 0.036 and 0.514 mg/L.