Table 2 Steroid hormone (SH) oxidation rate constants ( k , M-1 sec-1), removal efficiency (%) between 10 and 60 min and half-lives ( t 1/2 , min) derived from oxidation experiments using permanganate in Milli-Q and wastewaters (WWTP A, pH 8.2, DOC 2.3 mg C L-1and WWTP B, pH 6.3, COD 7.7 mg C L-1) at 22 ± 2°C for pH 6.0 and 8.0a
From: Degradation of progestagens by oxidation with potassium permanganate in wastewater effluents
Compounds | Milli-Q water | Wastewaters | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
kKMnO4-SH(M–1 sec–1) | Removal (%) | t1/2(min) | kKMnO4-SH(M–1 sec–1) | Removal (%) | t1/2(min) | |||||||
pH 6.0 | pH 8.0 | pH 6.0 | pH 8.0 | pH 6.0 | pH 8.0 | pH 6.3 | pH 8.2 | pH 6.3 | pH 8.2 | pH 6.0 | pH 8.0 | |
LEVO | 179 ± 10 | 199 ± 6 | 89 ± 12 | 89 ± 12 | 5.6 | 5.0 | 180 ± 5 | 302 ± 9 | 97 ± 8 | 90 ± 1 | 5.6 | 3.3 |
(0.96) | (0.98) | (0.96) | (0.98) | |||||||||
MEDRO | 73 ± 2 | 80 ± 2 | 57 ± 20 | 58 ± 12 | 14 | 12 | 49 ± 2 | 159 ± 4 | 71 ± 1 | 87 ± 4 | 2.1 | 6.3 |
(0.98) | (0.98) | (0.98) | (0.99) | |||||||||
NORE | 219 ± 13 | 224 ± 8 | 90 ± 11 | 78 ± 3 | 4.6 | 4.5 | 257 ± 10 | 368 ± 11 | 96 ± 2 | 92 ± 1 | 3.9 | 2.7 |
(0.96) | (0.97) | (0.98) | (0.98) | |||||||||
PROG | 28 ± 2 | 23 ± 1 | 48 ± 11 | 41 ± 5 | 36 | 44 | 26 ± 2 | 109 ± 4 | 58 ± 3 | 80 ± 20 | 38 | 9.2 |
(0.97) | (0.98) | (0.98) | (0.98) | |||||||||