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Table 1 First-order apparent rate constants ( k , sec -1 ) for permanganate decay with and without progestagens in wastewaters at 22 ± 2°C for pH 6.3 (WWTP B, DOC 7.7 mg C L -1 ) and 8.2 (WWTP A, COD 2.3 mg C L -1 ) a

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

 

kKMO4(×10–3sec–1)

 

Progestagens

Wastewaters

pH 6.3

pH 8.2

without SH

0.57 ± 0.02

0.44 ± 0.06

(0.99)

(0.99)

with SH

1.2 ± 0.1

1.13 ± 0.07

(0.94)

(0.98)

Milli-Q water

pH 6.0

pH 8.0

with SH

1.1 ± 0.2

1.0 ± 0.2

(0.90)

(0.93)

  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.