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Table 3 Temperature effect on first-order apparent rate constants ( k , sec-1), oxidation rate constants ( k , M-1sec-1) and activation energy (E a , KJ mol-1) for permanganate decay with and without progestagens (SH) in wastewater at pH 8.2 (WWTP A)a

From: Degradation of progestagens by oxidation with potassium permanganate in wastewater effluents

Compounds Natural waters WWTP A (pH 8.2)
kKMnO4(×10–4 sec–1) without SH kKMnO4-SH(M–1 sec–1) Ea(KJ mol-1)
5°C 15°C 22°C 30°C 5°C 15°C 22°C 30°C
LEVO      184 ± 5 278 ± 9 302 ± 9 389 ± 13 20 ± 2
     (0.99) (0.98) (0.99) (0.98)  
MEDRO      58 ± 1 115 ± 3 159 ± 4 171 ± 5 31 ± 2
1.9 ± 0.2 1.8 ± 0.8 4.4 ± 0.6 5.4 ± 0.2 (0.99) (0.99) (0.99) (0.98)  
(0.98) (0.82) (0.99) (0.94) 172 ± 8 288 ± 12 368 ± 11 429 ± 13 26 ± 2
     (0.97) (0.98) (0.99) (0.98)  
PROG      48 ± 1 89 ± 2 109 ± 3 112 ± 3 23 ± 7
     (0.99) (0.99) (0.93) (0.99)  
  1. a Values in parentheses represent coefficients of determination (R2) and uncertainties on k values represent calculated standard deviation (SD) given from the linear regression equation.